RV Level is an RV level app for iPhone that shows you, the moment you park, how unlevel you are and exactly what to do about it. It shows how high the wedge or leveling block under each wheel needs to be, for all four wheels at once rather than only the lowest corner.

The real-time bubble level is readable even from outside the vehicle and has a red night mode. There is no calibration to do, and the zero is saved per vehicle. Create as many vehicle profiles as you like, for a motorhome, a caravan or a tow vehicle, which makes it a camper leveling app that remembers each rig. Save campsites with their tilt and wedge height so you can return to a pitch that worked. Used as a motorhome level app on any site, it works for a caravan or a camper just the same.

The payload calculator covers fresh water, waste water, gas, bikes and passengers, and it warns you when an axle or hitch load limit is exceeded. It uses the numbers from your vehicle's registration and never estimates them, so enter the figures from your own documents.

Everything runs on the phone and works fully offline, with no account and no server. Vehicle profiles and saved campsites are unlimited, and the same full set of tools is there for every user.