Install
1.4 K
2
3
Category
Tools
Last updated
2026 July 21
Size
2 MB
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About this app

Use a coin or a credit card to calibrate the ruler anywhere, when you don't have a real ruler with you!

- Ad free, for real, forever!
- Pick your units: fractional inches, decimal inches, centimeters or millimeters
- Calibrate your ruler with a credit card to get you started anytime, anywhere
- Don't have a credit card with you? Calibrate your ruler with a coin!
- Calibrate your ruler with a real ruler to achieve the best precision in your measurement transfers
- Manually set the ruler to a known length for accurate measurements
- Night mode to save battery (on AMOLED screens) and to relieve your eyes at night
- Save your measurements for future use
- No permissions required

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What’s new

Update Android libraries for a lighter, faster app.
Remove "reorder running apps" permission that was not needed and mistakenly pulled into the last release from a testing library.

Ratings and reviews

3out of 5
Based on 2 ratings