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Flying Ruler: 3D Tape Measure

Flying Ruler: 3D Tape Measure

Distance Meter, Rangefinder

186 ratings
461 reviews
📚 Education
🔧 Utilities
$1.99

Details

  • Released
  • Updated
  • August 23, 2013
  • March 6, 2026

Developer

ALEXEY BRILEV
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Flying Ruler: 3D Tape Measure screenshot #1 for iPhone
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About

Measure distances and angles using your device's sensors. This app functions as a ruler, tape measure, rangefinder, protractor, and 3D angle finder, offering a quick and accurate way to take measurements in various conditions.

✓Measure distance by moving device
✓Ruler, tape measure, rangefinder
✓Protractor and 3D angle finder
✓Inertial navigational system technology
✓Adjustable units (inches/cm)
✓Save measurements with photos
✓Avoid obstacles during measurement
Show original description

What users say

Summarized from real user reviews of Flying Ruler. Based on 186 reviews and a 4.1/5 average, it highlights the 5 positives and 4 negatives reviewers mention most about this Utilities app.

Positive things

  • 👍Easy to use
  • 🚀Convenient for quick measurements
  • 💡Clever use of phone sensors
  • ⭐Accurate for most use cases
  • 🎨Visually appealing interface

Negative things

  • 🐛Inconsistent measurement accuracy
  • 📏Not as precise as a physical ruler
  • ⚠️Requires multiple measurements for reliable results
  • 🤔Confusing calibration process
See all reviews

What's New in Flying Ruler

6.3.3

March 6, 2026

- support for all new devices, including iPhone 17e, iPad Air 11-inch (M4), iPad Air 13-inch (M4) - other minor alterations and improvements

User reviews

Most RecentHighest RatedLowest Rated

Wow, spot on

Took a few tries to figure out calibration etc. Once I did that it was surprisingly spot on the mark. Quite impressive!
MikeW805MikeW805

Excelente aplicativo

Substitui perfeitamente qualquer (não considerando medidores a laser) régua ou trena.
NoriBeraldoNoriBeraldo

Response from developer

Agradecemos muito a sua avaliação! Estamos sempre trabalhando para aprimorar nosso algoritmo de cálculo e, quem sabe, em breve a precisão se tornará comparável à de medidores a laser. Já notamos que a precisão se aproxima desse nível ao usar uma série de medições.

Useless

Very disappointed
intelligentGintelligentG

Отлично

Приложение работает. Точность хорошая (совпадает с точностью буквально до нескольких миллиметров). Довольно точный инструмент, когда нет рулетки. И сделано красиво
Call_me_tessCall_me_tess

とても良い

他人に自慢できるアプリです
購入して、良かった
ニコルぽいどニコルぽいど
See 456 more reviews

Developer apps

Digital Angle Finder: 3D Meter
Digital Angle Finder: 3D Meter

Protractor & 3D Angle Measure

🔧 Utilities

(221)

Free
See developer apps

User experience

🐞

Reported Bugs

3 issues

Measurements vary wildly between attempts

Bug

Calibration process fails to complete

Bug

App crashes when used with certain phone cases

Bug
✨

Requested Features

4 requests

Add imperial unit support

Feature

Integrate with smart home devices

Feature

Provide more advanced measurement tools

Feature

Improve accuracy for smaller distances

Feature

FAQ

What does the Flying Ruler app do?

The Flying Ruler app allows you to measure distances and angles by simply moving your device. It acts as a virtual ruler, tape measure, rangefinder, protractor, and 3D angle finder, utilizing your device's accelerometer and gyroscope.

How accurate are the measurements?

The app is designed for high accuracy, with reported mean squared errors as low as 0.14% on newer devices. While accuracy can vary slightly by device, the error rarely exceeds 1.5%, and you can increase accuracy by making more precise movements.

What are the measurement capabilities?

You can measure linear distances, the distance between two points (rangefinder mode), angles on a surface (protractor mode), and angles between surfaces in 3D space. It supports both imperial (up to 999 ft) and metric (up to 99 m) units.

Is this app free to use?

The Flying Ruler app is a paid application. However, a free app called 'Digital Angle Finder: 3D Meter' is available to try out the angle measurement technology.

What devices is this app compatible with?

The app is designed for mobile devices and uses their built-in sensors like the accelerometer and gyroscope for measurements. Accuracy has been tested and reported on various iPhone models, indicating compatibility with modern smartphones.