iAngle Meter Pro on iPhone / iPad

Ah ha, carpentar's friend is here. This app allows you to measure the angle or slope.

Featured

1) Real time display angle value reference by horizontal axis.
2) 2 mode for using(mode 1 and mode 2).
3) Support measure angles with the camera mode.
3.1) you can take screen short can be a target for record store at a later time.
4) Graphics Animation display related by mode.
5) Display 0 to 90 degree reference by horizontal axis. 
6) Calibrate option for accuracy.

Download link: http://itunes.apple.com/us/app/iangle-meter-pro/id412681732?mt=8#