Krenometer is a free Android app developed by Oleg Kozhevnikov that combines a smart car inclinometer and autorun features. The app includes a small always-on-top-floating widget-inclinometer that shows your inclination angles, even while having an incoming call. It also has a gravitational autorun feature that launches your desired navigation app and Bluetooth automatically when you connect your phone to the car holder.

To get started, simply place your phone or tablet in the car holder when your vehicle is still on the aclinal (horizontal) surface. Launch Krenometer and perform calibration (zeroing) by a long press on any inclination (pitch or roll) indicator and tap "home" button. Move the widget to an appropriate place on the screen, and go to Krenometer settings to set autorun of your favourite navigation app.

Other features include single-touch zeroing and change of screen orientation, single-touch adjustable sensitivity level of sensors and warning/alarm zones, easy-to-mute siren shortcut on the main screen, and volume control with three optional warning sounds. Settings configuration allows you to set the sensitivity and warning/alarm zones according to your vehicle's specifications. Overall, Krenometer is a user-friendly app that makes your driving experience smoother and safer.