Best Ruler Apps

3.0😐(1.9K ratings)

Free

Transform your device into a digital tape measure. Quickly gauge the size of real-world objects, determine a person's height, and automatically get dimensions for rectangular items. Save and share your measurements easily.

What We Love

🚀 Quick measurements
👍 Easy to use
🔍 Convenient for quick tasks
💡 Useful level feature

Room to Improve

🐛 Inconsistent accuracy
🤔 Limited functionality
🔍 Struggles with small/tight spaces
🤷‍♂️ Confusing UI/UX

Ruler® by Tue Nguyen Minh

+ Photo Ruler & AR Measure

Strong Contender

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

Rul3r by YOYASOFT LLC

Ruler, Altimeter and More

Worth Considering

Measurement App for iPhone

4.4(1.1K ratings)

FreeAdsIn-App Purchases

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.

More Ruler apps to explore

Tape Measure®

Augmented reality tape measureSurface and angle measurementFloor plan creation

This augmented reality app transforms your phone into a versatile measuring tool. Accurately measure distances, surfaces, angles, and even detect studs. Visualize furniture placement and create floor plans with ease.

(46K)

Screen Ruler: Measure Length

CM, MM & Inch Measuring Tool

Calibratable digital rulerCentimeter and inch scalesMagnifier for precise alignment

Transform your iPhone or iPad into a digital ruler. Measure small objects directly on your screen using centimeters or inches, with magnifier assistance and haptic feedback for precise alignment. Calibrate the ruler for accurate results.

(26)

Tape Measure™

Measure anything

Tape MeasureRulerHeight Tool

Transform your device into a versatile digital toolkit for precise measurements. Create floor plans, scan objects in 3D, and measure distances with advanced AI and computer vision. Offers a wide array of tools for various measuring tasks.

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.

Measure on screen, AR & paper

(422)

ad-supported

Ruler / Measuring Tape

Measure against screenAugmented reality measurementPrintable ruler via AirPrint

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.

Ruler, Measuring Tape - AR App

(238)

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.

(1K)

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

(954)

Fractional ruler & measure

Infinite Ruler

Fractional inch or centimeter measurementAdjustable precision (1/8, 1/16, 1/32 inch)Extendable ruler beyond screen length

Measure objects with precision using a digital ruler that extends beyond your screen. Choose fractional inch or centimeter units and calibrate for accuracy. Ideal for quick measurements when a physical tool isn't available.

Ruler: Measure CM, MM & Inches

(2)

free

Actual Size, Auto-Calibrated

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)

Ruler AR - Measuring Tape Cam

3D Room Planner & Home Measure

Measure length, height, and areaAugmented reality technologyBubble level tool

Transform your phone into a powerful measuring tool using augmented reality. Accurately measure length, height, and area of objects simply by pointing your camera. Includes a bubble level for precise surface alignment.

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.

Smartphone as a Ruler

Smartphone as a rulerMeasure lengthsDigital measuring tool

Transform your smartphone into a precise measuring tool. This utility app allows you to measure lengths and distances directly on your screen. It's a convenient digital ruler for everyday tasks.

Dimensions & notes on photos

Draw dimensions directly on photosAdd text, freehand drawings, and audio notesConnect Bluetooth laser distance meters

Annotate photos with precise measurements, notes, and audio. Streamline on-site documentation and client communication with clear, digital reports. Supports Bluetooth laser meters and PDF imports for comprehensive project management.

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)

Measuring Tape: Ruler App

AR Camera for Length & Height

AR Tape MeasureHeight MeasurementArea Calculation

Transform your device into a powerful measuring tool using augmented reality. Accurately capture dimensions, calculate areas, and create floor plans directly from your camera view. Ideal for quick real-world measurements and space visualization.

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 AR - Tape Measure App

Tape measure & On-screen ruler

Augmented reality measurementsLength, width, and height measurementMeasure on non-flat surfaces

Measure real-world objects accurately using augmented reality. This app allows for length, width, and height measurements, even on non-flat surfaces. Save and review your measurements for future reference.

(4)