It is an app to measure the angle of object.
You can measure the angle of geometry patterns.
You can see the object by camera view and measure the angle easy way.
It helps you measure the angle of everything conveniently and accurately.
Protractor turn your smart phone into a useful protractor set for quick angle and slope measurement.

Measuring Mode 1: MEASURE ON SCREEN
Place measured object on the screen and move the line limiters to aligned with object's boundaries.
This measuring mode normally used for small object in the range of screen size.

Measuring Mode 2: MEASURE WITH CAMERA VIEW
Aim the camera at the target object, at the same time move the line limiters to aligned with the object's boundaries.
This measuring mode normally used to measures large object.