239+ iOS apps curated and reviewed
The best ruler photo apps on iPhone average 3.9★ across 239+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.3★ (35K) | No | Yes | Sep 2026 | |
| 2 |  | Free | 1.5★ (44) | No | No | Aug 2026 | |
| 3 |  | Free | 4.2★ (6.1K) | Yes | Yes | Sep 2026 | |
| 4 |  | Free | 4.6★ (45K) | Yes | Yes | Sep 2026 | |
| 5 |  | Free | 4.2★ (2.6K) | Yes | Yes | Sep 2026 | |
| 6 |  | Free | 4.2★ (4.3K) | Yes | Yes | Sep 2026 | |
| 7 |  | Free | — | No | Yes | Sep 2026 | |
| 8 |  | Free | — | No | No | Aug 2026 |
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.
This app allows you to measure objects directly on photos. Simply take a picture, mark a known object for reference, and then draw measurements on other items within the same image. It supports both metric and imperial units and offers intuitive editing tools.
Measure distances, heights, and widths of objects using your device's camera. This app utilizes augmented reality and your device's tilt angle to provide on-screen measurements. It's intuitive for various uses, from measuring buildings to aiding in golf.
