1. Beautiful steel or copper protractor/level.
2. Two moveable protractor hands
3. Camera mode to measure angles in camera
4. Optionally display degree in pitch/percentage/focal-length
5. Support both phones and tablets.
6. (New) Picture mode to load an existing picture to the app to measure the angle in this picture
7. (New) Support displaying the angle in focal length which is useful for photographer to decide what lens to bring for a particular location. If you are interested in this tool, you may also be interested in Photographer's Field Tools at https://play.google.com/store/apps/details?id=com.yingwen.photographertools. It basically expand this focal length feature to include a lot more other features that will benefit photographers and travelers.
1. Internet access is for crash report
v4.0 A major update. Allow user to choose the sensor in case some sensors don't work on certain phones/tablets, bring back the bubble level in camera mode, use one click to toggle mode.
v3.4 fixed problem showing percentage in settings, fixed bug when save/share
v3.3 support more newer phones