Excellent functions, everything you want plus tons of technical options if you want to use them. The most practical and powerful map application I've used. USGS maps!!! So great.
The App doesn't work in my device (Huawei P9 Lite).
Complicated and stupid
Best GPS app ever
I've tried out several different mapping apps, this is by far the best for me. If you are used to the Garmin eTrex, you'll be right at home with this feature set. Try it out!
Money well spent. It is a bit overwhelming at first, due to abundance of features. Just take your time to personalise your interface and it will become the best app you could wish for.