# Ruler

Android app · by Xalpha Lab · Tools

Ruler has 4,879,008 installs (+0.2% a month, measured over 59 days), rated 4.5 from 14,672 ratings, \#2,059 of 248,010 in Tools.

## Figures

- Installs: 4,879,008
- Rating: 4.5 · 14,672 ratings
- Price: Free
- In-app purchases: no
- 7-day growth in installs: +1,675 (+0.0%)
- 30-day growth in installs: +9,450 (+0.2%) (+18,471 over 58.6 days)
- Rank: #21,819 of 2,992,617 Android listings with an install count (down 1,116 since 2026-11-01)
- Rank: #2,059 of 248,010 in Tools

## Is Ruler safe?

StoreTally doesn't rate safety. Here's what the store and our tracking show:

- Listed on Google Play.
- Made by Xalpha Lab; no developer website listed.
- On Google Play since 2014-05-31. Last updated 2026-07-05.
- Rated 4.5 from 14,672 ratings.

## Reviews

- Ratings by stars: 5★ 82% · 4★ 7% · 3★ 2% · 2★ 1% · 1★ 8% (14,656 ratings)

## Description

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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Source: https://storetally.com/android/fr.ecp.ruler.app  
As of 2026-11-15, from the StoreTally census.