This app is a car inclinometer instrument for measuring angles of slope and tilt. 4WD off-road enthusiasts understand the importance to have it on board. Based on the internal sensor that most of the android devices have nowadays, it shows a drawing/picture of a 4x4 off-road vehicle of your preference tilting on an artificial horizon.
This download is totally safe. The app was originally designed by Rodrigo Merlo and it is listed among the Tools category. The latest update was on Mar 14, 2015 and 4x4 Inclinometer PRO was downloaded and set up by over 1K users.