Ruler for Android

1.1.3 GPL-3.0-only

On the fly measurements with your Smartphone as ruler or protractor.

Download APK (4.5 MB)

Description Versions

Version
1.1.3 (6)

Update
Apr 30, 2025

Developer
SECUSO - Security Usability Society

Category
Multimedia

License
GPL-3.0-only

Source code
Code repository

Ruler App

Privacy Friendly Ruler can display a ruler or protractor at the edge of the display. This enables on the fly measurements with the smartphone. It belongs to the Privacy Friendly Apps group developed by the research group SECUSO at Karlsruhe Institute of Technology.

What makes Privacy Friendly Ruler different from other similar apps?

1. No permissions
Privacy Friendly Ruler does not require any permissions.

2. No advertisement
Many other free apps in the Google Play Store dazzle annoying advertising and also shortens battery life.