OffroadMeter

Seems to work fine.

I bought this for off-roading in terrain that can seriously result in a flip, not for trail riding. When I'm climbing hills or crawling over rocky obstacles I don't like to listen to music, so the inability to control my music from within this app wasn't important to my buying decision. What was important was a simple interface that is easy to read at a glance and the ability to customize the inclinometer's settings for my particular vehicle. Both of these are handled well in this app. Tilt and roll alarms can be adjusted independently and the display for each can be reversed to suit your preference. The level settings are remembered so you don't have to calibrate the app every time you launch it (great if you mount your device in the same cradle every time you use it in the car). Auto-lock can be disabled (a must unless you want to fiddle with your iOS device while you drive) and the vehicle icon can be easily swiped between various off-road and utility trucks (although I'd like to see a basic Cherokee added to the lineup). How can you go wrong for a dollar?