10 Best Apps Like 定規(Ruler) for iPhone (2026)

Looking for something like 定規(Ruler)? We've analyzed 10+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.

Top Alternatives to 定規(Ruler)

Pocket,Ruler by 旭王

Small item measurement

Editor's Choice

🔧 Utilities

0.0(0 ratings)

FreeAds

Ruler 2.0 - inch, mm, cm by Oleg Osipov

High measurement accuracy

Strong Contender

🔧 Utilities

3.9😞(205 ratings)

Free

This app provides a precise on-screen measuring tool for your iPhone or iPad. Easily measure length and width in centimeters, millimeters, or inches, with options to save measurements as photos and customize the ruler's appearance. It's designed for accurate, user-friendly measurements.

What We Love

👍 Simple and easy to use
💡 Precise measurements (when working)
✨ Free with no ads
✅ Lightweight and small size

Room to Improve

🐛 Frequent crashes
📏 Inaccurate measurements on newer phones
📱 Not optimized for high DPI screens

Life-Size Ruler by Jumpei Adachi

Smartphone as a Ruler

Worth Considering

🔧 Utilities

3.7(3 ratings)

FreeIn-App Purchases

Transform your smartphone into a precise measuring tool. This utility app allows you to measure lengths and distances directly on your device's screen. Ideal for quick estimations and practical applications.

More apps like 定規(Ruler)

cm Ruler, device size measure

your device, centimeter Ruler

Free

Transform your device into a versatile ruler for precise measurements. It displays width, height, and tapped positions, allowing you to record and share dimensions. Customize the ruler's appearance with different colors.

Ruler UI for width and heightMeasure tapped position sizeRecord and share measurements

🔧 Utilities

(1)

ad-supported

Ruler - Screen accurate ruler

measuring app and ruler app

Free

Transform your device into a precise measuring tool. Measure objects, distances, and spaces with fingertip accuracy. Offers real-time results in both metric and imperial units, with professional calibration for your specific device.

Instant touch measurementTwo-finger measurementReal-time results (cm/inches)

🔧 Utilities

(0)

free

Ruler+ Utility

by Kyungjin Lee

Free

Transform your smartphone into a versatile measuring tool. Instantly measure the length of objects using your phone's screen, with options for fixed or scroll modes. Save your measurements and choose between centimeters or inches for precise results.

Smartphone rulerFixed and scroll measurement modesSave measurements

🔧 Utilities

(2)

free with in-app purchases

Ruler / Measuring Tape

Measure on screen, AR & paper

Free

Measure objects using your device's screen, augmented reality, or by printing a ruler. Offers three distinct methods for on-demand measurement without physical tools.

Measure against screenAugmented reality measurementPrintable ruler via AirPrint

🔧 Utilities

(219)

free

Epic Ruler

A classic ruler

Free

Transform your smartphone into a portable measuring tool. Accurately measure lengths in both inches and centimeters directly from your device.

Converts phone to rulerMeasures in inchesMeasures in centimeters

🔧 Utilities

(4)

free

Inch Ruler device size measure

your device as Ruler, measure.

Free

🔧 Utilities

(0)

Quick Measure - Precise Ruler

AR Measurement & Smart Tape

Free

This utility app provides a digital and augmented reality ruler for precise measurements. It includes features like unit conversion, a built-in level, and the ability to record and store measurement data.

Digital ruler for precise length measurementsAR ruler for measuring distances in real-world environmentsMeasurement recording and storage

🔧 Utilities

(4)

free

Best apps like 定規(Ruler)

Top Alternatives to 定規(Ruler)

What We LoveHighlights summarized from real App Store user reviews

Room to ImproveCommon complaints summarized from real App Store user reviews

More apps like 定規(Ruler)

What We Love

Room to Improve