diff --git a/android/app/src/main/java/com/github/ai/simplesplit/android/di/AndroidAppModule.kt b/android/app/src/main/java/com/github/ai/simplesplit/android/di/AndroidAppModule.kt
index ae84d5f..56b9a2b 100644
--- a/android/app/src/main/java/com/github/ai/simplesplit/android/di/AndroidAppModule.kt
+++ b/android/app/src/main/java/com/github/ai/simplesplit/android/di/AndroidAppModule.kt
@@ -10,6 +10,7 @@ import com.github.ai.simplesplit.android.data.repository.GroupRepository
 import com.github.ai.simplesplit.android.data.repository.MemberRepository
 import com.github.ai.simplesplit.android.data.settings.Settings
 import com.github.ai.simplesplit.android.data.settings.SettingsImpl
+import com.github.ai.simplesplit.android.domain.TimestampFormatter
 import com.github.ai.simplesplit.android.domain.usecase.CreateExportUrlUseCase
 import com.github.ai.simplesplit.android.domain.usecase.CreateGroupUrlUseCase
 import com.github.ai.simplesplit.android.domain.usecase.ParseGroupUrlUseCase
@@ -60,6 +61,7 @@ object AndroidAppModule {
         singleOf(::ThemeProviderImpl).bind(ThemeProvider::class)
         singleOf(::ResourceProviderImpl).bind(ResourceProvider::class)
         singleOf(::SettingsImpl).bind(Settings::class)
+        singleOf(::TimestampFormatter)
 
         // Database
         single { AppDatabase.buildDatabase(get()) }
diff --git a/android/app/src/main/java/com/github/ai/simplesplit/android/domain/TimestampFormatter.kt b/android/app/src/main/java/com/github/ai/simplesplit/android/domain/TimestampFormatter.kt
new file mode 100644
index 0000000..ef93679
--- /dev/null
+++ b/android/app/src/main/java/com/github/ai/simplesplit/android/domain/TimestampFormatter.kt
@@ -0,0 +1,27 @@
+package com.github.ai.simplesplit.android.domain
+
+import android.content.Context
+import java.text.DateFormat
+import java.util.Date
+import java.util.Locale
+
+class TimestampFormatter(
+    private val context: Context
+) {
+
+    fun formatShortDate(timestampMillis: Long): String {
+        val formatter = DateFormat.getDateInstance(DateFormat.MEDIUM, getSystemLocale(context))
+        return formatter.format(Date(timestampMillis))
+    }
+
+    fun formatDateAndTime(timestampMillis: Long): String {
+        val dateFormatter = DateFormat.getDateInstance(DateFormat.LONG, getSystemLocale(context))
+        val timeFormatter = DateFormat.getTimeInstance()
+        val date = Date(timestampMillis)
+        return dateFormatter.format(date) + " " + timeFormatter.format(date)
+    }
+
+    private fun getSystemLocale(context: Context): Locale {
+        return context.resources.configuration.locales[0]
+    }
+}
\ No newline at end of file
diff --git a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/core/compose/cells/ui/EmptyMessageCell.kt b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/core/compose/cells/ui/EmptyMessageCell.kt
index b3432d8..2d64c18 100644
--- a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/core/compose/cells/ui/EmptyMessageCell.kt
+++ b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/core/compose/cells/ui/EmptyMessageCell.kt
@@ -34,7 +34,7 @@ fun EmptyMessageCell(viewModel: EmptyMessageCellViewModel) {
         Text(
             text = model.message,
             textAlign = TextAlign.Center,
-            style = TextSize.BODY_MEDIUM.toTextStyle(),
+            style = TextSize.TITLE_MEDIUM.toTextStyle(),
             color = AppTheme.theme.colors.secondaryText
         )
     }
diff --git a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/dialogs/expenseDetails/ExpenseDetailsDialogCellFactory.kt b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/dialogs/expenseDetails/ExpenseDetailsDialogCellFactory.kt
index d22341d..841b842 100644
--- a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/dialogs/expenseDetails/ExpenseDetailsDialogCellFactory.kt
+++ b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/dialogs/expenseDetails/ExpenseDetailsDialogCellFactory.kt
@@ -3,6 +3,7 @@ package com.github.ai.simplesplit.android.presentation.dialogs.expenseDetails
 import androidx.compose.ui.unit.dp
 import com.github.ai.simplesplit.android.R
 import com.github.ai.simplesplit.android.data.api.coverters.toCurrency
+import com.github.ai.simplesplit.android.domain.TimestampFormatter
 import com.github.ai.simplesplit.android.presentation.core.ResourceProvider
 import com.github.ai.simplesplit.android.presentation.core.compose.TextColor
 import com.github.ai.simplesplit.android.presentation.core.compose.TextSize
@@ -30,7 +31,8 @@ import com.github.ai.split.api.ExpenseDto
 
 class ExpenseDetailsDialogCellFactory(
     private val themeProvider: ThemeProvider,
-    private val resourceProvider: ResourceProvider
+    private val resources: ResourceProvider,
+    private val timestampFormatter: TimestampFormatter
 ) {
 
     fun createCells(
@@ -89,11 +91,31 @@ class ExpenseDetailsDialogCellFactory(
             )
         )
 
+        val created = expense.created.timestampSeconds * 1000L
+        val modified = expense.modified.timestampSeconds * 1000L
+
+        cells.add(
+            TextCellViewModel(
+                TextCellModel(
+                    id = "created_date",
+                    text = resources.getString(
+                        R.string.create_on_with_str,
+                        timestampFormatter.formatDateAndTime(created)
+                    ),
+                    textSize = TextSize.BODY_LARGE,
+                    textColor = TextColor.SECONDARY
+                )
+            )
+        )
+
         cells.add(
             TextCellViewModel(
                 TextCellModel(
-                    id = "added_date",
-                    text = "added on 01 Jan 2025", // TODO: handle date
+                    id = "modified_date",
+                    text = resources.getString(
+                        R.string.modified_on_with_str,
+                        timestampFormatter.formatDateAndTime(modified)
+                    ),
                     textSize = TextSize.BODY_LARGE,
                     textColor = TextColor.SECONDARY
                 )
@@ -222,7 +244,7 @@ class ExpenseDetailsDialogCellFactory(
                     MenuCellModel(
                         id = CellId.EDIT_MENU.name,
                         icon = AppIcon.EDIT.vector,
-                        title = resourceProvider.getString(R.string.edit),
+                        title = resources.getString(R.string.edit),
                         height = OneLineSmallItemHeight
                     ),
                     eventProvider
@@ -231,7 +253,7 @@ class ExpenseDetailsDialogCellFactory(
                     MenuCellModel(
                         id = CellId.REMOVE_MENU.name,
                         icon = AppIcon.REMOVE.vector,
-                        title = resourceProvider.getString(R.string.remove),
+                        title = resources.getString(R.string.remove),
                         height = OneLineSmallItemHeight
                     ),
                     eventProvider
diff --git a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/GroupDetailsScreen.kt b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/GroupDetailsScreen.kt
index 0047235..a4c5a9b 100644
--- a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/GroupDetailsScreen.kt
+++ b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/GroupDetailsScreen.kt
@@ -16,10 +16,14 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
+import com.github.ai.simplesplit.android.R
 import com.github.ai.simplesplit.android.presentation.core.compose.CenteredBox
+import com.github.ai.simplesplit.android.presentation.core.compose.CornersShape
 import com.github.ai.simplesplit.android.presentation.core.compose.ErrorMessageCard
 import com.github.ai.simplesplit.android.presentation.core.compose.ErrorState
+import com.github.ai.simplesplit.android.presentation.core.compose.TextSize
 import com.github.ai.simplesplit.android.presentation.core.compose.TopBar
 import com.github.ai.simplesplit.android.presentation.core.compose.TopBarMenuItem
 import com.github.ai.simplesplit.android.presentation.core.compose.cells.CellViewModel
@@ -29,6 +33,9 @@ import com.github.ai.simplesplit.android.presentation.core.compose.cells.ui.Head
 import com.github.ai.simplesplit.android.presentation.core.compose.cells.ui.ShapedSpaceCell
 import com.github.ai.simplesplit.android.presentation.core.compose.cells.ui.ShapedTextCell
 import com.github.ai.simplesplit.android.presentation.core.compose.cells.ui.SpaceCell
+import com.github.ai.simplesplit.android.presentation.core.compose.cells.ui.newShapedSpaceCellViewModel
+import com.github.ai.simplesplit.android.presentation.core.compose.cells.ui.newShapedTextCell
+import com.github.ai.simplesplit.android.presentation.core.compose.cells.ui.newSpaceCell
 import com.github.ai.simplesplit.android.presentation.core.compose.cells.viewModel.DividerCellViewModel
 import com.github.ai.simplesplit.android.presentation.core.compose.cells.viewModel.EmptyMessageCellViewModel
 import com.github.ai.simplesplit.android.presentation.core.compose.cells.viewModel.HeaderCellViewModel
@@ -39,6 +46,9 @@ import com.github.ai.simplesplit.android.presentation.core.compose.preview.Theme
 import com.github.ai.simplesplit.android.presentation.core.compose.rememberCallback
 import com.github.ai.simplesplit.android.presentation.core.compose.rememberOnClickedCallback
 import com.github.ai.simplesplit.android.presentation.core.compose.theme.AppTheme
+import com.github.ai.simplesplit.android.presentation.core.compose.theme.ElementMargin
+import com.github.ai.simplesplit.android.presentation.core.compose.theme.GroupMargin
+import com.github.ai.simplesplit.android.presentation.core.compose.theme.HalfMargin
 import com.github.ai.simplesplit.android.presentation.core.compose.theme.LightTheme
 import com.github.ai.simplesplit.android.presentation.screens.groupDetails.cells.ui.ExpenseCell
 import com.github.ai.simplesplit.android.presentation.screens.groupDetails.cells.ui.SettlementCell
@@ -167,7 +177,58 @@ fun GroupDetailsDataPreview() {
     }
 }
 
+@Composable
 private fun newDataState() =
     GroupDetailsState.Data(
-        cellViewModels = listOf()
+        cellViewModels = listOf(
+            newSpaceCell(
+                height = HalfMargin
+            ),
+            newShapedSpaceCellViewModel(
+                height = GroupMargin,
+                shape = CornersShape.TOP
+            ),
+            newShapedTextCell(
+                text = "Trip to Disney Land",
+                textColor = AppTheme.theme.colors.primaryText,
+                textSize = TextSize.TITLE_LARGE,
+                shape = CornersShape.NONE
+            ),
+            newShapedSpaceCellViewModel(
+                height = ElementMargin,
+                shape = CornersShape.NONE
+            ),
+            newShapedTextCell(
+                text = stringResource(R.string.members_with_str, 5),
+                textColor = AppTheme.theme.colors.primaryText,
+                textSize = TextSize.TITLE_MEDIUM,
+                shape = CornersShape.NONE
+            ),
+            newShapedTextCell(
+                text = "Mickey Mouse - Donald Duck - Goofy - Minnie Mouse - Shlof",
+                textColor = AppTheme.theme.colors.secondaryText,
+                textSize = TextSize.BODY_LARGE,
+                shape = CornersShape.NONE
+            ),
+            newShapedSpaceCellViewModel(
+                height = ElementMargin,
+                shape = CornersShape.NONE
+            ),
+            newShapedTextCell(
+                text = stringResource(R.string.total_spending),
+                textColor = AppTheme.theme.colors.primaryText,
+                textSize = TextSize.TITLE_MEDIUM,
+                shape = CornersShape.NONE
+            ),
+            newShapedTextCell(
+                text = "$300",
+                textColor = AppTheme.theme.colors.secondaryText,
+                textSize = TextSize.BODY_LARGE,
+                shape = CornersShape.NONE
+            ),
+            newShapedSpaceCellViewModel(
+                height = GroupMargin,
+                shape = CornersShape.BOTTOM
+            )
+        )
     )
\ No newline at end of file
diff --git a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/cells/GroupDetailsCellFactory.kt b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/cells/GroupDetailsCellFactory.kt
index 03c2651..10a0e78 100644
--- a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/cells/GroupDetailsCellFactory.kt
+++ b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/cells/GroupDetailsCellFactory.kt
@@ -2,6 +2,7 @@ package com.github.ai.simplesplit.android.presentation.screens.groupDetails.cell
 
 import com.github.ai.simplesplit.android.R
 import com.github.ai.simplesplit.android.data.api.coverters.toCurrency
+import com.github.ai.simplesplit.android.domain.TimestampFormatter
 import com.github.ai.simplesplit.android.presentation.core.ResourceProvider
 import com.github.ai.simplesplit.android.presentation.core.compose.CornersShape
 import com.github.ai.simplesplit.android.presentation.core.compose.TextSize
@@ -38,7 +39,8 @@ import com.github.ai.split.api.GroupDto
 
 class GroupDetailsCellFactory(
     private val themeProvider: ThemeProvider,
-    private val resourceProvider: ResourceProvider
+    private val resources: ResourceProvider,
+    private val timestampFormatter: TimestampFormatter
 ) {
 
     fun createCells(
@@ -76,7 +78,9 @@ class GroupDetailsCellFactory(
         val members = group.members.map { member -> member.name }
             .joinToString(" - ")
 
-        return listOf(
+        val totalSpending = group.expenses.sumOf { expense -> expense.amount }
+
+        val models = mutableListOf(
             SpaceCellModel(
                 id = "top_space",
                 height = HalfMargin
@@ -95,7 +99,14 @@ class GroupDetailsCellFactory(
             ),
             ShapedSpaceCellModel(
                 id = "title_middle_space",
-                height = HalfMargin,
+                height = ElementMargin,
+                shape = CornersShape.NONE
+            ),
+            ShapedTextCellModel(
+                id = "members_title",
+                text = resources.getString(R.string.members_with_str, group.members.size),
+                textColor = themeProvider.theme.colors.primaryText,
+                textSize = TextSize.TITLE_MEDIUM,
                 shape = CornersShape.NONE
             ),
             ShapedTextCellModel(
@@ -104,13 +115,44 @@ class GroupDetailsCellFactory(
                 textColor = themeProvider.theme.colors.secondaryText,
                 textSize = TextSize.BODY_LARGE,
                 shape = CornersShape.NONE
-            ),
+            )
+        )
+
+        if (group.expenses.isNotEmpty()) {
+            models.addAll(
+                listOf(
+                    ShapedSpaceCellModel(
+                        id = "total_spending_space",
+                        height = ElementMargin,
+                        shape = CornersShape.NONE
+                    ),
+                    ShapedTextCellModel(
+                        id = "total_spending_title",
+                        text = resources.getString(R.string.total_spending),
+                        textColor = themeProvider.theme.colors.primaryText,
+                        textSize = TextSize.TITLE_MEDIUM,
+                        shape = CornersShape.NONE
+                    ),
+                    ShapedTextCellModel(
+                        id = "total_spending",
+                        text = totalSpending.formatAsMoney(group.currency.toCurrency()),
+                        textColor = themeProvider.theme.colors.secondaryText,
+                        textSize = TextSize.BODY_LARGE,
+                        shape = CornersShape.NONE
+                    )
+                )
+            )
+        }
+
+        models.add(
             ShapedSpaceCellModel(
                 id = "title_bottom_space",
                 height = GroupMargin,
                 shape = CornersShape.BOTTOM
             )
         )
+
+        return models
     }
 
     private fun createExpenseHeaderModels(): List<CellModel> {
@@ -121,7 +163,7 @@ class GroupDetailsCellFactory(
             ),
             HeaderCellModel(
                 id = "expense_header",
-                text = resourceProvider.getString(R.string.expenses),
+                text = resources.getString(R.string.expenses),
                 textSize = TextSize.TITLE_MEDIUM,
                 textColor = themeProvider.theme.colors.primaryText
             )
@@ -132,7 +174,7 @@ class GroupDetailsCellFactory(
         return listOf(
             EmptyMessageCellModel(
                 id = "empty_message",
-                message = resourceProvider.getString(R.string.no_expenses_message),
+                message = resources.getString(R.string.no_expenses_message),
                 height = EmptyMessageItemHeight
             )
         )
@@ -167,15 +209,18 @@ class GroupDetailsCellFactory(
                 )
             }
 
+            val date = timestampFormatter.formatShortDate(
+                expense.modified.timestampSeconds * 1000L
+            )
+
             models.add(
                 ExpenseCellModel(
                     id = CellId("expense", StringPayload(expense.uid)).format(),
                     title = expense.title,
-                    description = "Paid by $payerName", // TODO: string
+                    description = resources.getString(R.string.paid_by_with_str, payerName),
                     members = members,
                     amount = expense.amount.formatAsMoney(expense.currency.toCurrency()),
-                    // TODO: date should be implemented on server side
-                    date = "01 Jan",
+                    date = date,
                     shape = shape
                 )
             )
@@ -192,7 +237,7 @@ class GroupDetailsCellFactory(
             ),
             HeaderCellModel(
                 id = "settlement_header",
-                text = "How to Settle Debts", // TODO: string
+                text = resources.getString(R.string.how_to_settle_debts),
                 textSize = TextSize.TITLE_MEDIUM,
                 textColor = themeProvider.theme.colors.primaryText
             )
@@ -238,7 +283,7 @@ class GroupDetailsCellFactory(
             models.add(
                 SettlementCellModel(
                     id = "settlement_$idx",
-                    title = "${debtor.name} → ${creditor.name}",
+                    title = "${debtor.name}  >  ${creditor.name}",
                     amount = transaction.amount.formatAsMoney(currency),
                     shape = shape
                 )
@@ -249,7 +294,7 @@ class GroupDetailsCellFactory(
             models.add(
                 EmptyMessageCellModel(
                     id = "settlement_empty_message",
-                    message = resourceProvider.getString(R.string.no_debts_yet),
+                    message = resources.getString(R.string.no_debts_yet),
                     height = HugeMargin
                 )
             )
diff --git a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/cells/ui/SettlementCell.kt b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/cells/ui/SettlementCell.kt
index 2d014d4..1d025df 100644
--- a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/cells/ui/SettlementCell.kt
+++ b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groupDetails/cells/ui/SettlementCell.kt
@@ -86,7 +86,6 @@ fun SettlementCellPreview() {
             DividerCell(newDividerCell())
             SettlementCell(
                 newSettlementCell(
-                    text = "JohnJohnJohnJohn → JaneJaneJaneJaneJaneJane",
                     shape = CornersShape.BOTTOM
                 )
             )
diff --git a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groups/GroupsInteractor.kt b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groups/GroupsInteractor.kt
index 1a8f395..132ef97 100644
--- a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groups/GroupsInteractor.kt
+++ b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groups/GroupsInteractor.kt
@@ -10,6 +10,7 @@ import com.github.ai.simplesplit.android.domain.usecase.CreateExportUrlUseCase
 import com.github.ai.simplesplit.android.domain.usecase.CreateGroupUrlUseCase
 import com.github.ai.simplesplit.android.model.exception.AppException
 import com.github.ai.simplesplit.android.presentation.screens.groups.model.GroupsData
+import com.github.ai.split.api.GroupDto
 import kotlinx.coroutines.flow.Flow
 
 class GroupsInteractor(
@@ -41,7 +42,7 @@ class GroupsInteractor(
             }
 
             GroupsData(
-                groups = groups,
+                groups = sortGroups(groups),
                 requestedCredentials = credentials,
                 currencies = currencies
             )
@@ -66,4 +67,23 @@ class GroupsInteractor(
 
     fun createShareUrl(credentials: GroupCredentials): String =
         groupUrlUseCase.createUrl(credentials)
+
+    private fun sortGroups(groups: List<GroupDto>): List<GroupDto> {
+        val groupsAndTimestamps = groups.map { group ->
+            val lastModified = if (group.expenses.isNotEmpty()) {
+                val lastTimestamp =
+                    group.expenses.maxOf { expense -> expense.modified.timestampSeconds }
+
+                lastTimestamp
+            } else {
+                group.modified.timestampSeconds
+            }
+
+            group to lastModified
+        }
+
+        return groupsAndTimestamps
+            .sortedByDescending { (_, timestamp) -> timestamp }
+            .map { (group, _) -> group }
+    }
 }
\ No newline at end of file
diff --git a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groups/GroupsViewModel.kt b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groups/GroupsViewModel.kt
index 6e4b6be..9724daf 100644
--- a/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groups/GroupsViewModel.kt
+++ b/android/app/src/main/java/com/github/ai/simplesplit/android/presentation/screens/groups/GroupsViewModel.kt
@@ -31,13 +31,11 @@ import com.github.ai.simplesplit.android.utils.getStringOrNull
 import com.github.ai.simplesplit.android.utils.mutableStateFlow
 import com.github.ai.simplesplit.android.utils.parseCellId
 import com.github.ai.simplesplit.android.utils.toErrorMessage
-import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.emitAll
 import kotlinx.coroutines.flow.emptyFlow
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.flowOf
-import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.launch
 
 class GroupsViewModel(
@@ -141,7 +139,7 @@ class GroupsViewModel(
                         emit(createScreenState(data))
                     }
                 )
-        }.flowOn(Dispatchers.IO)
+        }
     }
 
     private fun createScreenState(data: GroupsData): GroupsState {
@@ -178,7 +176,7 @@ class GroupsViewModel(
             interactor.removeGroup(groupUid)
 
             emitAll(loadData())
-        }.flowOn(Dispatchers.IO)
+        }
     }
 
     private fun navigateToGroupDetails(groupUid: String) {
@@ -373,7 +371,7 @@ class GroupsViewModel(
                 emit(GroupsState.Error(message))
                 return@flow
             }
-        }.flowOn(Dispatchers.IO)
+        }
     }
 
     private fun getGroupUidFromCellId(cellId: String): String? {
diff --git a/android/app/src/main/res/values/strings.xml b/android/app/src/main/res/values/strings.xml
index 0179419..2b05402 100644
--- a/android/app/src/main/res/values/strings.xml
+++ b/android/app/src/main/res/values/strings.xml
@@ -50,6 +50,12 @@
     <string name="expenses">Expenses</string>
     <string name="no_debts_yet">No debts yet</string>
     <string name="export_as_csv_file">Export as CSV file</string>
+    <string name="create_on_with_str">created on %s</string>
+    <string name="modified_on_with_str">modified on %s</string>
+    <string name="members_with_str">%s members:</string>
+    <string name="total_spending">Total spending:</string>
+    <string name="paid_by_with_str">Paid by %s</string>
+    <string name="how_to_settle_debts">How to Settle Debts</string>
 
     <!-- Expense Editor screen -->
     <string name="add_expense">Add Expense</string>
diff --git a/android/backend-api/src/main/kotlin/com/github/ai/split/api/ExpenseDto.kt b/android/backend-api/src/main/kotlin/com/github/ai/split/api/ExpenseDto.kt
index b5d6f70..ededd6e 100644
--- a/android/backend-api/src/main/kotlin/com/github/ai/split/api/ExpenseDto.kt
+++ b/android/backend-api/src/main/kotlin/com/github/ai/split/api/ExpenseDto.kt
@@ -10,5 +10,7 @@ data class ExpenseDto(
     val amount: Double,
     val currency: CurrencyDto,
     val paidBy: List<MemberDto>,
-    val splitBetween: List<MemberDto>
+    val splitBetween: List<MemberDto>,
+    val created: TimestampDto,
+    val modified: TimestampDto
 )
\ No newline at end of file
diff --git a/android/backend-api/src/main/kotlin/com/github/ai/split/api/GroupDto.kt b/android/backend-api/src/main/kotlin/com/github/ai/split/api/GroupDto.kt
index 2644a05..b684a50 100644
--- a/android/backend-api/src/main/kotlin/com/github/ai/split/api/GroupDto.kt
+++ b/android/backend-api/src/main/kotlin/com/github/ai/split/api/GroupDto.kt
@@ -10,5 +10,7 @@ data class GroupDto(
     val currency: CurrencyDto,
     val members: List<MemberDto>,
     val expenses: List<ExpenseDto>,
-    val paybackTransactions: List<TransactionDto>
+    val paybackTransactions: List<TransactionDto>,
+    val created: TimestampDto,
+    val modified: TimestampDto
 )
\ No newline at end of file
diff --git a/android/backend-api/src/main/kotlin/com/github/ai/split/api/TimestampDto.kt b/android/backend-api/src/main/kotlin/com/github/ai/split/api/TimestampDto.kt
new file mode 100644
index 0000000..39a7ad0
--- /dev/null
+++ b/android/backend-api/src/main/kotlin/com/github/ai/split/api/TimestampDto.kt
@@ -0,0 +1,9 @@
+package com.github.ai.split.api
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class TimestampDto(
+    val timestampSeconds: Long,
+    val formatted: String
+)
\ No newline at end of file
diff --git a/backend/api/src/main/scala/com/github/ai/split/api/ExpenseDto.scala b/backend/api/src/main/scala/com/github/ai/split/api/ExpenseDto.scala
index 5efcebc..5c4ad63 100644
--- a/backend/api/src/main/scala/com/github/ai/split/api/ExpenseDto.scala
+++ b/backend/api/src/main/scala/com/github/ai/split/api/ExpenseDto.scala
@@ -9,7 +9,9 @@ case class ExpenseDto(
   amount: Double,
   currency: CurrencyDto,
   paidBy: List[MemberDto],
-  splitBetween: List[MemberDto]
+  splitBetween: List[MemberDto],
+  created: TimestampDto,
+  modified: TimestampDto
 )
 
 object ExpenseDto {
diff --git a/backend/api/src/main/scala/com/github/ai/split/api/GroupDto.scala b/backend/api/src/main/scala/com/github/ai/split/api/GroupDto.scala
index 3059ce1..73195eb 100644
--- a/backend/api/src/main/scala/com/github/ai/split/api/GroupDto.scala
+++ b/backend/api/src/main/scala/com/github/ai/split/api/GroupDto.scala
@@ -9,7 +9,9 @@ case class GroupDto(
   currency: CurrencyDto,
   members: List[MemberDto],
   expenses: List[ExpenseDto],
-  paybackTransactions: List[TransactionDto]
+  paybackTransactions: List[TransactionDto],
+  created: TimestampDto,
+  modified: TimestampDto
 )
 
 object GroupDto {
diff --git a/backend/api/src/main/scala/com/github/ai/split/api/TimestampDto.scala b/backend/api/src/main/scala/com/github/ai/split/api/TimestampDto.scala
new file mode 100644
index 0000000..b84801a
--- /dev/null
+++ b/backend/api/src/main/scala/com/github/ai/split/api/TimestampDto.scala
@@ -0,0 +1,13 @@
+package com.github.ai.split.api
+
+import zio.json.{DeriveJsonDecoder, DeriveJsonEncoder, JsonDecoder, JsonEncoder}
+
+case class TimestampDto(
+  timestampSeconds: Long,
+  formatted: String
+)
+
+object TimestampDto {
+  implicit val encoder: JsonEncoder[TimestampDto] = DeriveJsonEncoder.gen[TimestampDto]
+  implicit val decoder: JsonDecoder[TimestampDto] = DeriveJsonDecoder.gen[TimestampDto]
+}
diff --git a/backend/app/src/main/resources/init.sql b/backend/app/src/main/resources/init.sql
index ec94a01..bf0f808 100644
--- a/backend/app/src/main/resources/init.sql
+++ b/backend/app/src/main/resources/init.sql
@@ -8,7 +8,9 @@ CREATE TABLE IF NOT EXISTS groups (
     title VARCHAR(255) NOT NULL,
     description VARCHAR(255) NOT NULL,
     password_hash VARCHAR(255),
-    currency_iso_code VARCHAR(3) NOT NULL
+    currency_iso_code VARCHAR(3) NOT NULL,
+    created TIMESTAMP NOT NULL,
+    modified TIMESTAMP NOT NULl
 );
 
 CREATE TABLE IF NOT EXISTS group_members (
@@ -23,7 +25,9 @@ CREATE TABLE IF NOT EXISTS expenses (
     title VARCHAR(255) NOT NULL,
     description VARCHAR(255) NOT NULL,
     amount DOUBLE NOT NULL,
-    is_split_between_all BOOLEAN DEFAULT FALSE
+    is_split_between_all BOOLEAN DEFAULT FALSE,
+    created TIMESTAMP NOT NULL,
+    modified TIMESTAMP NOT NULl
 );
 
 CREATE TABLE IF NOT EXISTS paid_by (
diff --git a/backend/app/src/main/scala/com/github/ai/split/domain/usecases/AddExpenseUseCase.scala b/backend/app/src/main/scala/com/github/ai/split/domain/usecases/AddExpenseUseCase.scala
index 1e9c213..582f3cd 100644
--- a/backend/app/src/main/scala/com/github/ai/split/domain/usecases/AddExpenseUseCase.scala
+++ b/backend/app/src/main/scala/com/github/ai/split/domain/usecases/AddExpenseUseCase.scala
@@ -28,6 +28,7 @@ import com.github.ai.split.domain.usecases.{ResolveUserReferencesUseCase, Valida
 import zio.*
 import zio.direct.*
 
+import java.time.{LocalDateTime, ZoneOffset}
 import java.util.UUID
 
 class AddExpenseUseCase(
@@ -92,6 +93,8 @@ class AddExpenseUseCase(
         )
       }
 
+      val time = LocalDateTime.now(ZoneOffset.UTC)
+
       val expense = expenseRepository
         .add(
           ExpenseWithRelations(
@@ -101,7 +104,9 @@ class AddExpenseUseCase(
               title = newExpense.title,
               description = newExpense.description,
               amount = newExpense.amount,
-              isSplitBetweenAll = newExpense.split == SplitBetweenAll
+              isSplitBetweenAll = newExpense.split == SplitBetweenAll,
+              created = time,
+              modified = time
             ),
             paidBy = paidBy,
             splitBetween = splitBetween
diff --git a/backend/app/src/main/scala/com/github/ai/split/domain/usecases/AddGroupUseCase.scala b/backend/app/src/main/scala/com/github/ai/split/domain/usecases/AddGroupUseCase.scala
index 4adafe1..674c0d4 100644
--- a/backend/app/src/main/scala/com/github/ai/split/domain/usecases/AddGroupUseCase.scala
+++ b/backend/app/src/main/scala/com/github/ai/split/domain/usecases/AddGroupUseCase.scala
@@ -1,15 +1,15 @@
 package com.github.ai.split.domain.usecases
 
-import com.github.ai.split.entity.db.{GroupEntity, GroupMemberEntity, GroupUid, MemberUid}
+import com.github.ai.split.entity.db.{GroupEntity, GroupUid}
 import com.github.ai.split.data.db.dao.{GroupEntityDao, GroupMemberEntityDao}
-import com.github.ai.split.data.db.repository.CurrencyRepository
 import com.github.ai.split.domain.PasswordService
-import com.github.ai.split.entity.{NewExpense, NewGroup}
+import com.github.ai.split.entity.NewGroup
 import com.github.ai.split.entity.exception.DomainError
 import com.github.ai.split.utils.some
 import zio.*
 import zio.direct.*
 
+import java.time.{LocalDateTime, ZoneOffset}
 import java.util.UUID
 
 class AddGroupUseCase(
@@ -30,6 +30,7 @@ class AddGroupUseCase(
       validateData(newGroup).run
 
       val groupUid = GroupUid(UUID.randomUUID())
+      val created = LocalDateTime.now(ZoneOffset.UTC)
 
       val group = groupDao
         .add(
@@ -42,7 +43,9 @@ class AddGroupUseCase(
             } else {
               None
             },
-            currencyIsoCode = newGroup.currencyIsoCode
+            currencyIsoCode = newGroup.currencyIsoCode,
+            created = created,
+            modified = created
           )
         )
         .run
diff --git a/backend/app/src/main/scala/com/github/ai/split/domain/usecases/FillTestDataUseCase.scala b/backend/app/src/main/scala/com/github/ai/split/domain/usecases/FillTestDataUseCase.scala
index 049c271..3c07339 100644
--- a/backend/app/src/main/scala/com/github/ai/split/domain/usecases/FillTestDataUseCase.scala
+++ b/backend/app/src/main/scala/com/github/ai/split/domain/usecases/FillTestDataUseCase.scala
@@ -27,6 +27,7 @@ import com.github.ai.split.entity.exception.DomainError
 import com.github.ai.split.utils.some
 import zio.{IO, ZIO}
 
+import java.time.{LocalDateTime, ZoneOffset}
 import java.util.UUID
 import java.util.concurrent.atomic.{AtomicInteger, AtomicLong, AtomicReference}
 
@@ -98,6 +99,7 @@ class FillTestDataUseCase(
   }
 
   private def insertGroup(group: Group): IO[DomainError, Unit] = {
+    val time = LocalDateTime.now(ZoneOffset.UTC)
     for {
       _ <- groupDao.add(
         GroupEntity(
@@ -105,7 +107,9 @@ class FillTestDataUseCase(
           title = group.title,
           description = group.description,
           passwordHash = Some(passwordService.hashPassword(group.password)),
-          currencyIsoCode = "EUR"
+          currencyIsoCode = "EUR",
+          created = time,
+          modified = time
         )
       )
 
@@ -136,6 +140,8 @@ class FillTestDataUseCase(
     groupUid: GroupUid,
     expense: Expense
   ): IO[DomainError, Unit] = {
+    val time = LocalDateTime.now(ZoneOffset.UTC)
+
     for {
       members <- groupRepository.getMembers(groupUid)
 
@@ -152,7 +158,9 @@ class FillTestDataUseCase(
           isSplitBetweenAll = expense.split match {
             case SplitBetweenAll => true
             case SplitBetweenMembers(_) => false
-          }
+          },
+          created = time,
+          modified = time
         )
       )
 
diff --git a/backend/app/src/main/scala/com/github/ai/split/domain/usecases/UpdateExpenseUseCase.scala b/backend/app/src/main/scala/com/github/ai/split/domain/usecases/UpdateExpenseUseCase.scala
index 584436d..7488bd6 100644
--- a/backend/app/src/main/scala/com/github/ai/split/domain/usecases/UpdateExpenseUseCase.scala
+++ b/backend/app/src/main/scala/com/github/ai/split/domain/usecases/UpdateExpenseUseCase.scala
@@ -4,11 +4,11 @@ import com.github.ai.split.data.db.dao.{GroupMemberEntityDao, PaidByEntityDao, S
 import com.github.ai.split.data.db.repository.{ExpenseRepository, GroupRepository}
 import com.github.ai.split.entity.{
   ExpenseWithRelations,
+  Member,
   Split,
   SplitBetweenAll,
   SplitBetweenMembers,
-  UserReference,
-  Member
+  UserReference
 }
 import com.github.ai.split.entity.db.{ExpenseEntity, ExpenseUid, GroupUid, MemberUid, PaidByEntity, SplitBetweenEntity}
 import com.github.ai.split.entity.exception.DomainError
@@ -16,6 +16,8 @@ import com.github.ai.split.utils.some
 import com.github.ai.split.domain.usecases.ResolveUserReferencesUseCase
 import zio.*
 
+import java.time.{LocalDateTime, ZoneOffset}
+
 class UpdateExpenseUseCase(
   private val groupRepository: GroupRepository,
   private val expenseRepository: ExpenseRepository,
@@ -98,6 +100,8 @@ class UpdateExpenseUseCase(
           expense.entity.isSplitBetweenAll
         }
 
+        val modified = LocalDateTime.now(ZoneOffset.UTC)
+
         val newExpense = ExpenseWithRelations(
           entity = ExpenseEntity(
             uid = expense.entity.uid,
@@ -105,7 +109,9 @@ class UpdateExpenseUseCase(
             title = newTitle.getOrElse(expense.entity.title),
             description = newDescription.getOrElse(expense.entity.description),
             amount = newAmount.getOrElse(expense.entity.amount),
-            isSplitBetweenAll = isSplitBetweenAll
+            isSplitBetweenAll = isSplitBetweenAll,
+            created = expense.entity.created,
+            modified = modified
           ),
           paidBy = paidBy,
           splitBetween = splitBetween
diff --git a/backend/app/src/main/scala/com/github/ai/split/domain/usecases/UpdateGroupUseCase.scala b/backend/app/src/main/scala/com/github/ai/split/domain/usecases/UpdateGroupUseCase.scala
index 24bbd6f..5099388 100644
--- a/backend/app/src/main/scala/com/github/ai/split/domain/usecases/UpdateGroupUseCase.scala
+++ b/backend/app/src/main/scala/com/github/ai/split/domain/usecases/UpdateGroupUseCase.scala
@@ -14,6 +14,7 @@ import com.github.ai.split.entity.exception.DomainError
 import zio.*
 import zio.direct.*
 
+import java.time.{LocalDateTime, ZoneOffset}
 import java.util.UUID
 
 class UpdateGroupUseCase(
@@ -66,19 +67,25 @@ class UpdateGroupUseCase(
 
       _ <- updateMembers(groupUid = groupUid, newMembersOption = newMemberUids)
 
-      _ <- groupDao.update(
-        GroupEntity(
-          uid = groupUid,
-          title = newTitle.getOrElse(group.title),
-          description = newDescription.getOrElse(group.description),
-          passwordHash = if (newPassword.isDefined) {
-            Some(passwordService.hashPassword(newPassword.get))
-          } else {
-            group.passwordHash
-          },
-          currencyIsoCode = newCurrencyIsoCode.getOrElse(group.currencyIsoCode)
+      _ <- {
+        val modified = LocalDateTime.now(ZoneOffset.UTC)
+
+        groupDao.update(
+          GroupEntity(
+            uid = groupUid,
+            title = newTitle.getOrElse(group.title),
+            description = newDescription.getOrElse(group.description),
+            passwordHash = if (newPassword.isDefined) {
+              Some(passwordService.hashPassword(newPassword.get))
+            } else {
+              group.passwordHash
+            },
+            currencyIsoCode = newCurrencyIsoCode.getOrElse(group.currencyIsoCode),
+            created = group.created,
+            modified = modified
+          )
         )
-      )
+      }
     } yield groupUid
   }
 
diff --git a/backend/app/src/main/scala/com/github/ai/split/entity/db/ExpenseEntity.scala b/backend/app/src/main/scala/com/github/ai/split/entity/db/ExpenseEntity.scala
index 1ce4f5e..79f27b5 100644
--- a/backend/app/src/main/scala/com/github/ai/split/entity/db/ExpenseEntity.scala
+++ b/backend/app/src/main/scala/com/github/ai/split/entity/db/ExpenseEntity.scala
@@ -1,10 +1,14 @@
 package com.github.ai.split.entity.db
 
+import java.time.LocalDateTime
+
 case class ExpenseEntity(
   uid: ExpenseUid,
   groupUid: GroupUid,
   title: String,
   description: String,
   amount: Double,
-  isSplitBetweenAll: Boolean
+  isSplitBetweenAll: Boolean,
+  created: LocalDateTime,
+  modified: LocalDateTime
 )
diff --git a/backend/app/src/main/scala/com/github/ai/split/entity/db/GroupEntity.scala b/backend/app/src/main/scala/com/github/ai/split/entity/db/GroupEntity.scala
index 124b64d..1b6f562 100644
--- a/backend/app/src/main/scala/com/github/ai/split/entity/db/GroupEntity.scala
+++ b/backend/app/src/main/scala/com/github/ai/split/entity/db/GroupEntity.scala
@@ -1,11 +1,15 @@
 package com.github.ai.split.entity.db
 
+import java.time.LocalDateTime
+
 case class GroupEntity(
   uid: GroupUid,
   title: String,
   description: String,
   passwordHash: Option[String],
-  currencyIsoCode: String
+  currencyIsoCode: String,
+  created: LocalDateTime,
+  modified: LocalDateTime
 )
 
 object GroupEntity {
diff --git a/backend/app/src/main/scala/com/github/ai/split/utils/DataConverters.scala b/backend/app/src/main/scala/com/github/ai/split/utils/DataConverters.scala
index 59886f2..3c6e6d1 100644
--- a/backend/app/src/main/scala/com/github/ai/split/utils/DataConverters.scala
+++ b/backend/app/src/main/scala/com/github/ai/split/utils/DataConverters.scala
@@ -1,7 +1,7 @@
 package com.github.ai.split.utils
 
 import com.github.ai.split.entity.{ExpenseWithRelations, Transaction}
-import com.github.ai.split.api.{CurrencyDto, ExpenseDto, GroupDto, MemberDto, TransactionDto}
+import com.github.ai.split.api.{CurrencyDto, ExpenseDto, GroupDto, MemberDto, TimestampDto, TransactionDto}
 import com.github.ai.split.entity.db.{
   CurrencyEntity,
   ExpenseEntity,
@@ -16,9 +16,9 @@ import com.github.ai.split.entity.db.{
 }
 import com.github.ai.split.entity.exception.DomainError
 import zio.*
-import zio.direct.*
 
-import java.util.UUID
+import java.time.format.DateTimeFormatter
+import java.time.{LocalDateTime, ZoneOffset}
 
 def toExpenseDto(
   expense: ExpenseWithRelations,
@@ -74,7 +74,9 @@ def toExpenseDto(
     amount = expense.amount,
     currency = toCurrencyDto(currency),
     paidBy = paidByUsers,
-    splitBetween = splitBetweenUsers
+    splitBetween = splitBetweenUsers,
+    created = toTimestampDto(expense.created),
+    modified = toTimestampDto(expense.modified)
   )
 }
 
@@ -162,7 +164,9 @@ def toGroupDto(
     currency = toCurrencyDto(currency),
     members = memberDtos,
     expenses = transformedExpenses,
-    paybackTransactions = paybackTransactions.map(transaction => toTransactionDto(transaction))
+    paybackTransactions = paybackTransactions.map(transaction => toTransactionDto(transaction)),
+    created = toTimestampDto(group.created),
+    modified = toTimestampDto(group.modified)
   )
 }
 
@@ -183,3 +187,13 @@ def toCurrencyDto(
     name = currency.name,
     symbol = currency.symbol
   )
+
+def toTimestampDto(
+  dateTime: LocalDateTime
+): TimestampDto =
+  TimestampDto(
+    timestampSeconds = dateTime.toEpochSecond(ZoneOffset.UTC),
+    formatted = dateTime.format(TIMESTAMP_FORMAT)
+  )
+
+private val TIMESTAMP_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")