Best Ruler App Free Cm

246+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated November 2026

Finding the right ruler app free cm can be overwhelming with so many options. We've analyzed 246+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Ruler App Free Cm (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Ruler - CM, MM, InchesRuler - CM, MM, InchesFree3.5★ (79)YesNoNov 2026
2Ruler®Ruler®Free4.3★ (35K)NoYesNov 2026
3Ruler ++Ruler ++Free3.5★ (954)NoYesNov 2026
4Tape Measure+ Ruler AppTape Measure+ Ruler AppFree4.7★ (53)NoYesOct 2026
5Ruler: Measure CM, MM & InchesRuler: Measure CM, MM & InchesFree5.0★ (2)YesYesNov 2026
6Ruler •Ruler •Free4.2★ (421)YesNoNov 2026
7Ruler ▸Ruler ▸Free—NoNoNov 2026
8Quick Measure - Precise RulerQuick Measure - Precise RulerFree5.0★ (4)NoNoOct 2026

Top Picks for Ruler App Free Cm

Ruler - CM, MM, Inches#1

Ruler - CM, MM, Inches by Noadit, Inc.

CM, MM, In. Measure Anything.
Editor's Choice
🔧 Utilities
3.5😞(79 ratings)
FreeAds
Ruler - CM, MM, Inches screenshot 1
Ruler - CM, MM, Inches screenshot 2
Ruler - CM, MM, Inches screenshot 3

Measure lengths, widths, and diagonals accurately using your phone. Switch between metric and imperial units, and utilize flexible starting points for precise measurements in any direction. Features auto-calibration for minimal error and a screen lock to preserve readings.

What We Love

  • 👍 Simple and easy to use
  • 📏 Accurate measurements (for some)
  • 💡 Useful for small objects
  • ✨ Clean interface
  • 🚀 Fluid performance
  • 🛠️ Good basic functionality

Room to Improve

  • 😠 Excessive and intrusive ads
  • 🚫 Ads block measurements
  • 🔊 Loud and shocking ads
  • 💸 No option to pay for ad-free (or purchase lost)
  • 📉 Inaccurate inch measurements (decimal vs. fractional)
  • ⚠️ Shady download practices
  • ⚫ Black screen issue
  • 👆 Finger obscures measurements
  • 📱 Inaccurate on specific devices
  • 👎 Lost paid features after update
Ruler®#2

Ruler® by Tue Nguyen Minh

+ Photo Ruler & AR Measure
Strong Contender
🔧 Utilities
4.3😞(35K ratings)
FreeIn-App Purchases
Ruler® screenshot 1
Ruler® screenshot 2
Ruler® screenshot 3
Ruler® screenshot 4

This app provides a versatile toolkit for all your measurement needs. It includes a classic ruler, a tape measure, and a camera ruler for precise measurements. Easily switch between units and document your findings by adding measurements directly to photos.

What We Love

  • 🚀 Accurate measurements
  • 👍 Easy to use
  • 🔍 Convenient for small items
  • 📏 Useful ruler tool

Room to Improve

  • 💰 Paywall for basic features
  • ⏱️ Limited free usage time
  • 🔍 Inaccurate for larger objects
  • 🙅‍♀️ Aggressive monetization tactics
Ruler ++#3

Ruler ++ by Fapps World et Cie S.E.C.S.

Measure lengths
Worth Considering
📊 Productivity
3.5😞(954 ratings)
FreeIn-App Purchases
Ruler ++ screenshot 1

This app allows you to measure lengths accurately in both inches and centimeters. It provides a simple and straightforward tool for quick measurements.

What We Love

  • 👍 Simple and quick to use
  • 👍 Includes both metric and Imperial measures
  • 🚀 Great for wanting to measure displayed length

Room to Improve

  • 🐛 Measurements are not accurate
  • 🐛 Ruler not matching real-world measurements
  • 🐛 Ruler not scaling properly on different devices
  • 🔋 Ads make it impossible to use
  • 🔋 Constant, intrusive ads
  • 🔋 Ads with sound that can't be turned off

More Ruler App Free Cm apps to explore

FAQ about Ruler App Free Cm

What is the best ruler app free cm for iPhone?
Ruler - CM, MM, Inches tops our ruler app free cm ranking as of November 2026, with a 3.5-star average from 79 App Store ratings, and it's free to download.
Ruler - CM, MM, Inches shows ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 246+ ruler app free cm on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.