Gone are the days of purchasing the same app multiple times for different devices. With the Universal License, you can seamlessly use your Android and Apple devices together, without worrying about having to purchase the app multiple times.
If you're a frequent user of the Guru Maps app and want to unlock its full potential, the Pro version is definitely worth checking out.
The biggest difference between Free and Pro is that with Pro you can download unlimited number of maps for offline use, including the navigation and topographic data. This gives you a more realistic view of the terrain, that is especially useful when traveling overland with limited Internet access.