I was Looking for a moving map with accurate calculations on all trip related information (ETE, ETA, groundspeed, etc.). The calculations are quite good and match up with our airplanes FMS. However the free maps do not present well when zoomed out. First, you can only zoom out to a 100 mile scale. Second, when zoomed out there are no geographical boundaries like state lines or city names, so being able to tell where you are at a glance is not possible. When zoomed in the detail is excellent which is probably more suitable for short trips. The free maps have to be downloaded one state at a time (for U.S.). The app crashed multiple times; most often when trying to pan the map. Rendering was surprisingly slow given the map data was downloaded and not being pulled from the Internet.
The database of fixes and waypoints appears to be extensive and the search feature is very good. Compiling a flight plan took some work and a few references to the user manual. It was not easy to change on the fly when clearances changed or given a direct-to clearance. In fact I couldnt get the direct-to function (as described in the user manual) to work at all. I mustve been doing something wrong. That option wasnt present in the pop-up menu like it is pictured in the manual.
Theres probably many features that are good that I did not explore since I was mainly interested in the moving map and tracking. But Im disappointed that I paid $37 and came up short.
dppilot about Air Navigation Pro, v3.5.1