★★★★★
Average rating on the App Store. Apple doesn't publish how many ratings each star has.
Where this app stands in Finland, updated 13 Nov 2026
Top free
Not in this chart today
Top paid · All apps and games
#72 –
The daily graph appears once there are at least two days of data for this country.
Best rank in each country today. Click a country to see its graph.
TopoGrid Trainer — a training app Learn the basics of map reading and work with UTM and MGRS coordinates through structured lessons and practical exercises. Practise identifying grid references, plotting positions, measuring distances, and working with azimuths. Use training maps and tools such as a compass and ruler to build your skills step by step. The app is an educational aid and digital textbook for independent practice. Some exercises are designed to encourage practice with a real map. The app may use your device location in the “My Position” training module. Location and coordinate information may be inaccurate. TopoGrid Trainer is not a navigation system and should not be relied upon for navigation, safety-critical activities, or emergencies. The app is independent and is not affiliated with or authorized by any armed force or government institution. Online map sources: OpenFreeMap © OpenMapTiles; data from OpenStreetMap. The OpenTopoMap layer uses OpenStreetMap and SRTM data; map style © OpenTopoMap (CC BY-SA).