This application is a photo-realistic aircraft Artificial Horizon indicator, also known as an Attitude Indicator, for your iPhone. Has a resettable zero and the movement is super smooth and realistic. NEW VERSION includes these new features: 1. improved Graphics 2. Landscape mode 3. Native iPad app 4. Bug Fixes 5. Supports Latest iOS version This application is modeled after the instrument found in many general aviation aircraft. It looks just like the real thing because photos of the real thing were used to create the graphics. Pitch and roll angles are represented both with the analog instrument as well a digital display. The instrument can be zeroed and the pitch reference "wings" can be adjusted, just like the real instrument. Of course, the iPhone doesnt have the same type of Gyro as an aircraft, so the instrument function is simulated using the iPhones built in accelerometer, This program has been tested on an iPhone 3g, 3Gs, 4 and iPod touch running firmware version 4.0 on up