Off-Road Clinometer is a free Android app developed by Octavian Fometescu that falls under the category of Travel & Navigation and the subcategory of Maps & GPS. As the name suggests, this app is a clinometer that helps you measure the slope and angle of the terrain while driving off-road.

To use the app, you need to attach your phone to the holder and press the calibrate button when the vehicle is horizontal. The app then shows you the slope and angle of the terrain in real-time. You can also access the local map to find your location and plan your route accordingly.

It's important to note that this app is not a professional equipment replacement, and it should be used at your own risk. You need to test the app's correct operation on your phone before using it. Also, interstitial ads appear when switching from one screen to another. Overall, Off-Road Clinometer is a handy tool for outdoor enthusiasts who want to explore off-road terrains safely.