Download BackCountry Navigator PRO GPS v4.9.2 APK. Play in the outdoors with GPS and offline topo maps! Use your phone or tablet as an offroad topo mapping GPS with the bestselling outdoor navigation app for Android! Explore beyond cell coverage for hiking, hunting and more. Download topo maps for the US and some other countries in advance, so you won't need cell coverage when navigating. This uses many publicly available map sources as free downloads. It also has some additional content available as an in app purchase: -Accuterra Topo Map Source on sale for a $20 upgrade. This can be purchased and used with or in instead of the free sources. - Boundary maps for 12 western states from the Bureau of Land Management(BLM) for $7.99. Overlay for topo maps hunters.