I use the app PeakFinder all the time and it’s incredible for determining what mountain is what when you’re on the go!
The AR feature is really nice.
Usually the less people pay, the more demands on the developers.
This is a well polished app, which has non-trivial technical solutions (the AR view works very well and must not have been so simple to implement reliability on a miriad of different android devices).
5 dollars! C'mon.