For what it's worth, the developers of the PC version are not the same people who have ported the app to various mobile platforms. See the top of the official
Stellarium website for a list of supported platforms. Also for what it's worth, your question has been asked/answered many times in the support forum at ths site. Here is one such thread
https://answers.launchpad.net/stella...uestion/210250. It's also interesting that other threads in this support forum complain that the version in iTunes is missing in action too.
Unfortunately, there does not appear to be a way to contact the numbered Ontario corporation listed as the vendor for the PB app. I can understand your frustration but I doubt that the person or persons responsible for this disappearance are reading this forum. I have been on the receiving end of this frustration, having received two reviews expressing bitter complaints.