Preferably Android apps available through F-Droid, but feel free to recommend iOS apps, too!
On iOS, I really like Sky Guide—I don’t think it’s open source, but it has the right features for the casual star gazer like myself, specifically the ability to point my phone at an object (i.e., “what’s that object up there”) and/or search by name (“where’s Jupiter right now”). After my transition to Android, I’ve found Sky Map, which has good feature parity with Sky Guide.
Any other open source apps like Sky Map that I haven’t found yet?
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I really like Stellarium on Android
Stellarium is an amazing planetarium program, almost unbelivable it’s open source.
But it’s android port is a bit disappointing, to be honest.
I’ve seen this app recommended in other articles; unfortunately, it is unavailable on F-Droid, so I’ve yet to try it for myself, but thanks for the recommendation.
You might want to look at obtainium as a package source as well
Seconded
i go to https://www.timeanddate.com/astronomy/night/ which is not really an app and it can be a bit wonky at times but it works better than every mobile app i’ve seen.
the desktop version of stellarium is the only worthwhile open source program i know about.
