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. More information can be found an secuso.org/pfa/
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.
You can reach us via
Twitter - @SECUSOResearch (https://twitter.com/secusoresearch)
Mastodon - @SECUSO_Research@bawü.social (https://xn--baw-joa.social/@SECUSO_Research/)
Job opening - https://secuso.aifb.kit.edu/english/Job_Offers_1557.php
Latest Version
1.1.4-googleUploaded by
Karlsruher Institut für Technologie
Requires Android
Android 4.2+
Category
Free Tools AppContent Rating
Everyone
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Flag as inappropriateLast updated on Jan 22, 2026
Minor bug fixes and improvements. Install or update to the newest version to check it out!
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