Ruler

Xalpha Lab

About this app

A simple, user-friendly and accurate ruler for your phone!

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 permission required


Update history:

3.5 -- Millimeters, set to predefined length
3.3 -- Calibrate with a credit card, remove saved measurements from history
3.2 -- Fractional display of measurements in inches
3.0 -- Android Material theme and new scale for measurements in inches
2.1 -- Calibrate with a coin, default calibration button (reset)
2.0 -- You can now save your measurements
1.7 -- Night mode to save battery and/or read more easily at night
1.6 -- Added default calibration for common devices (Nexus series, Galaxy S series, Galaxy Note 1, 2 and 3)

Ratings and reviews

Designed and works well with its simplicity and ease, just what I was looking for. Also works well with auto-rotate of portrait/landscape view promptly. Would like it if the menu wasn't tap-to-show/hide at the top, but rather always shown in the blank middle realestate (instead of showing, "Tap to..." there).

As a maintenance worker in a factory, i need to sometimes make measurements. Its not enough for me to carry a dedicated tape measure, but in a pinch, this app works just fine. It's easy ro use, read, and adjust. I only wish that 0 started slightly higher on the screen so I could get a slightly more accurate measure. None the less, this does its purpose and does it well

It does what it says on the tin. And not a single ad in sight - just a ruler. If I had money to spare, I'd get the donation version. Wanna buy you a beer, dude, because this is a great app. Way too many tool/utility apps are smothered in ads. And while I get that developers need money, it makes tools hard to use. This ones considerate of that - NO advertising at all!

What's new

Fix issues with tall devices such as the Pixel 2 XL, and devices with a notch a the top of the screen.
Add Swedish krona to available currencies for calibration as well as Swedish localization.
Minor UI improvements.