249+ iOS apps curated and reviewed
Looking for free ruler calculator apps? 18 of our 249+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.6★ (401) | Yes | Yes | Aug 2026 |
| 2 |  | Free | 4.4★ (9.2K) | No | Yes | Aug 2026 |
| 3 |  | Free | 4.9★ (22K) | Yes | Yes | Aug 2026 |
| 4 |  | Free | 4.8★ (39K) | No | Yes | Aug 2026 |
| 5 |  | $1.99 was $3.99 | 4.8★ (2.2K) | No | No | Aug 2026 |
| 6 |  | $0.99 | — | No | No | Jun 2026 |
| 7 |  | Free | — | No | No | May 2026 |
| 8 |  | Free | 5.0★ (4) | No | No | May 2026 |
A powerful construction calculator designed for tradespeople. It offers a wide range of tools for estimating, layout, framing, and jobsite calculations, helping to save time and improve accuracy. Supports both imperial and metric units.
This app provides a convenient way to perform calculations involving feet and inches. It features a visual tape measure display and supports fractions and mixed decimals, showing results in feet, inches, and centimeters.
Easily perform fraction calculations including addition, subtraction, multiplication, and division. Convert fractions to decimals and vice versa with a clear, user-friendly interface. Ideal for students, cooks, and DIYers needing quick and accurate fraction management.
This app is a powerful construction calculator designed for professionals working with dimensions. It offers a wide range of solutions for dimensional math, right angle calculations, area and volume, and special functions, helping to improve speed and accuracy in layouts, bids, and estimates.
Perform complex calculations directly on a visual tape measure. Easily add, subtract, multiply, and divide measurements, mixing decimals and fractions. Get results in inches, feet, and centimeters, in both decimal and fractional formats, saving time and preventing errors.
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.
This app transforms your device into a precise digital measuring tool. It offers accurate measurements for various objects and distances using your camera, with multiple units and offline functionality.
Measure objects directly on your smartphone screen without needing traditional tools. This utility offers an easy-to-use interface with accurate scales in centimeters and inches, supporting both horizontal and vertical measurements.
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.
Turn your iPhone or iPad into a precise measuring tool. Easily measure lengths in centimeters or inches with features like magnifier mode and haptic feedback. Ideal for daily tasks, office use, DIY projects, and on-the-go measurements.
This app simplifies complex measurements by allowing you to add, subtract, multiply, and divide fractions, inches, and centimeters in one equation. Visualize your results on a digital ruler and manage project dimensions with smart cut lists and running totals. It's designed for offline use with no ads or tracking.
