Max Protractor
Max Protractor Summary
Max Protractor is a free, ad-supported Android app in Tools by MAXCOM. Released in Jun 2011 (15 years ago). It has about 269K+ installs and 580 ratings with a 4.15★ (good) average. Based on AppGoblin estimates, it reaches roughly 15K monthly active users and generates around $<10K monthly revenue (0% IAP / 100% ads). Store last updated Aug 20, 2026
SDK intelligence: AppGoblin detected 4 development tools(e.g. Google), 1 ad networks, 1 mediation,and 1 analytics: product integrated into Max Protractor. View full SDK list →
Max Protractor SDKs Summary
Max Protractor was last scanned for SDKs on 2026-04-29. Below is the overview of third-party companies detected in the app. The full list of SDKs, permissions and unknowns is available here.
4.15★
Ratings: 580
Screenshots
App Description
Max Protractor is a multi-method angle measurement tool.
It is application for measuring angle with various method.
Main Function
1. Various measuring method : Gravity Sensor, Camera, Touch, Magnetic Sensor etc.
2. Calibration : Calibration function makes easy and accurate measure when measuring angle with sensor.
Instruction
1. Plumb Mode
1) Set device in parallel to the baseline of the measuring object.
2) If you need, turn on the Camera by touching Camera button on the upper-right corner of the screen.
3) Read tilted Angle on the upper-left side of the screen.
2. Frame Mode
1) Set device in parallel to the baseline of the measuring object.
2) If you need, turn on the Camera by touching Camera button on the upper-right corner of the screen.
3) Read tilted Angle on the upper-left side of the screen.
3. Inclination Mode
1) Contact your device on the slope.
4. Touch Mode
1) Set device in parallel to the baseline of the measuring object.
2) If you need, turn on the Camera by touching Camera button on the upper-right corner of the screen.
3) Touch measured point and check the value of angle on screen.
5. Plane Angle Mode
1) Set device in parallel to the baseline of the measuring object.
2) Calibrate measuring value.
3) Rotate device to measure angle and check the value of angle on screen.
Reference
- Some device is difficult to measure when battery is low state. Especially, Plane Angle Mode because of Magnetic sensor.
- Can be a tolerance caused by sensor accuracy of device.

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