226+ iOS apps curated and reviewed
Out of 226+ ruler millimeters apps on iOS, 18 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.3★ (35K) | No | Yes | Sep 2026 | |
| 2 |  | $3.99 | 4.4★ (108) | No | No | Aug 2026 | |
| 3 |  | Free | 3.5★ (79) | Yes | No | Sep 2026 | |
| 4 |  | Free | 3.5★ (934) | No | Yes | Sep 2026 | |
| 5 |  | Free | — | Yes | No | May 2026 | |
| 6 |  | Free | 3.6★ (23) | Yes | Yes | Aug 2026 | |
| 7 |  | Free | 3.9★ (205) | No | No | May 2026 | |
| 8 |  | Free | 5.0★ (1) | No | Yes | 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 transforms your device into a versatile measuring tool. It allows for precise measurements of length, area, diameter, and angles using the touchscreen. Easily split objects into equal parts and switch between millimeters and inches for your convenience.
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.
