Best Ruler Millimeters Apps

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
🎯 Good for small item measurements

Room to Improve

🐛 Frequent crashes
📏 Inaccurate measurements on newer phones
📱 Not optimized for high DPI screens
📉 Scale is off by ~50% on newer models
⚠️ Support link is shady

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

CM, MM, In. Measure Anything.

Strong Contender

3.5😞(79 ratings)

FreeAdsIn-App Purchases

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® by Tue Nguyen Minh

+ Photo Ruler & AR Measure

Worth Considering

Millimeter Pro - screen ruler

4.3😞(35K ratings)

FreeIn-App Purchases

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

More Ruler Millimeters apps to explore

best tape measure in inch mm

$3.99

This app transforms your device into a versatile measuring tool. It allows for precise measurements of length, area, diameter, and angles using the touchscreen. Easily split objects into equal parts and switch between millimeters and inches for your convenience.

Touchscreen ruler and tape measureMeasure length, area, diameter, and anglesSplit objects into equal parts

Ruler, Measuring Tape - AR App

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free

Length Measure Calculator Tool

AR ruler and tape measureLength and distance measurementUnit converter (mm, inches, cm)

This app turns your device into a versatile ruler and tape measure using advanced AR technology. It offers precise measurements for objects, rooms, and complex shapes, along with unit conversion and a history log. Ideal for professionals and everyday users needing accurate measurements.

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Measure Length, Width & Height

RefScale: Photo Ruler

Ruler - Screen accurate ruler

(0)

measuring app and ruler app

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

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.

Includes Camera (AR) Ruler

On-screen ruler for small objectsAugmented Reality (AR) measuringMeasure linear sizes in cm/inches

Measure objects and distances with an on-screen ruler and augmented reality. Supports inches and centimeters, with features for linear sizes, angles, area, volume, and more. Save your measurements for later use.

This app provides a digital ruler for measuring the length and diameter of small objects directly on your device. It features a millimeter scale and allows for easy sliding to measure.

Digital ruler functionalityMillimeter scaleDiameter measurement

📊 Productivity

(1)

Ruler ++

Measure lengths

Measure in inchesMeasure in centimetersAccurate length measurement

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

📊 Productivity

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Life-Size Ruler

Smartphone as a Ruler

Smartphone as a rulerMeasure lengthsMeasure distances

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.

(6)

Ruler & Tape Measure – AR Tool

Length, Width, Height & Angle

Ruler, Altimeter and More

Portable rulerProtractorSpirit level

This utility app provides a portable ruler for on-the-go measurements. It also includes a suite of additional tools like a protractor, spirit level, and various meters for diverse measurement needs.

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Measure Length & Caliper Tool

Ruler: CM, MM & Inches

Actual-size accuracy on any screenDual-edge metric and imperial scalesPrecision caliper mode for thickness

This app provides a highly accurate, actual-size ruler that adapts to any screen. It offers dual-edge measurement, a precision caliper mode, and universal calibration for reliable real-world measurements. It functions offline and is designed for various devices.

(2)

Exacto: AR Tape Measure, Ruler

Measuring level tool in pocket

Measure & Calibrate with Ease.

Dual measurement units (inches/millimeters)Intuitive drag-and-measure interfaceAccurate screen calibration

Transform your device into a precise digital caliper for measuring objects in inches and millimeters. Features intuitive drag-and-measure functionality and accurate screen calibration using common items.

(1)

Tape Measure AR: Rulixar Ruler

2D/3D Floor Plans & LiDAR Scan

You can measure real 実寸で測れます。

Accurate measurementsMillimeter displayInch display

A straightforward measuring tool for iPhones, offering accurate measurements in both millimeters and inches. It's designed for ease of use and provides a cool, functional experience for everyday measuring needs.

Various scales can be set!

Display various measurement scalesSet magnification ratiosSet reduced scales

This app displays various measurement scales for length, including meters and inches. It allows users to set magnification ratios and reduced scales for different applications. Users can calibrate the ruler and adjust PPI settings for accurate measurements.

📊 Productivity

(3)