Measure Angles Pro Level Tool is a precise and intuitive multitool that includes a 360° protractor, clinometer with bubble level, spirit level, surface level, plummet tool, flashlight, compass, ruler, and camera measuring, all in one handy app. Developed by Jens Rieckhof, this app is designed for iPhone users who need to measure angles and slopes accurately.

The clinometer allows you to measure angles along all edges of your phone, set target angles, and store up to five angles in the angle list. As you approach the target angle, or the 90°/180°/270°/270° angle, you receive an acoustical warning depending on the difference between measured and targeted angle. The spirit level displays when approaching 0°/90°/180°/270°, enabling you to precisely level things. The surface tool enables you to level surfaces, displaying level differences in degrees. The app also includes a stability indicator indicating the rate of change.

The 6-point calibration assistant guarantees high precision up to 0.01°, and surface level and protractor calibration are independent of each other, allowing for even higher precision. The app's sophisticated design uses the native drawing capabilities of your phone for extremely clear and fluid display.