Clinometer: Bring everything in level or measure the slightest slopes around you! A full inclinometer and bubble level in one app.

MagnetMeter: Visualize and measure the hidden world of magnetism created by objects around you. Find pipes and electric lines behind walls.

iSetSquare (iGeodreieck) for iPhone 4: A professional geometry triangle for technical drawings, items alignment, model making and much more.

AccelMeter: Realtime visualize the acceleration in 3 dimensions. When driving a car or flying a plane determine the g-forces that occur in different situations.

Spin the bottle: Need a quick random decision? Select the number of players / options and rotate the bottle with your finger.

Contacts By Number: Have a phone number and don't know who that is? Search your contacts by the phone number with this add-on app.