Original report: https://bugs.launchpad.net/stellarium-website/+bug/1018967
Perhaps a trivial issue, but you only become aware of it if you look at Stellarium "from the outside".
There are surprisingly many people who know about Stellarium, but are not aware that it runs on a smartphone. You tell them that it's not a PC- or laptop-only software, and they could actually run it on their iPhone, and they do a double take and go "really?" This has happened numerous times.
I guess the reason is that the smartphone versions don't have a link on the front page of the site. Other versions are conspicuously linked there.