250+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our digital pd ruler list covers 250+ iPhone apps updated through August 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.8★ (22K) | No | No | Aug 2026 |
| 2 |  | Free | 4.3★ (35K) | No | Yes | Aug 2026 |
| 3 |  | Free | 2.8★ (61) | — | No | May 2026 |
| 4 |  | Free | 1.0★ (4) | No | No | Aug 2026 |
| 5 |  | Free | 4.2★ (399) | Yes | No | Aug 2026 |
| 6 |  | Free was $0.99 | — | No | No | Aug 2026 |
| 7 |  | Free | 3.5★ (78) | Yes | Yes | May 2026 |
| 8 |  | Free | 5.0★ (4) | No | No | Aug 2026 |
Transform your iPhone into a precise 3D scanner for measuring pupillary distance and segment height. Get accurate measurements for ordering prescription glasses online with confidence, eliminating the need for manual tools.
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.
Transform your iPhone into a handy measuring tool. Accurately measure lengths in centimeters and inches, up to 1 meter, without needing a physical ruler.
Transform your smartphone into a portable measuring tool. Accurately measure lengths in both inches and centimeters directly from your device.
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 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.
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.
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.
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.
This application provides a precise measurement tool by rendering according to your device's screen width specifications. It has been tested on a wide range of Apple devices to ensure accuracy for your measuring needs.
This utility app uses augmented reality to measure the length and area of real-world objects using your smartphone's camera. It offers unlimited measurements and an ad-free experience with premium subscriptions.
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.
