The tool has been rated 4.2 on Google Play. This application has adverts. The app is very popular among Samsung and Huawei users.
It's free to download the .apk setup package of Russian Topo Maps Free and you can read users' reviews on Droid Informer. This application installer requires 5 MB of free space to work fine on Android 4.1 and higher.
From the users' point of view, the plus of the app is great functionality. As users indicate, there are some drawbacks, they are intrusive ads and a battery drain.