QuadLevel is a level app for your iPhone that gives you four displays at once. It responds quickly but smoothly. Three of the displays tell you in cm/m (or inches per 10 feet) how far off you are from level or plumb. This way you can avoid doing trig! At 1 cm/m or 1″/10 feet, it’s the most accurate level available on the app store! Calibration is super easy, with an amusing sound to let you know when it’s done.
This 3rd Party App is available at the Apple iTunes AppStore. Browse the full list of all AppStore apps filed under the AppStore category.