241+ iOS apps curated and reviewed
If you already know Ruler®, this is the deeper bench. 241+ cm ruler apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.3★ (35K) | No | Yes | Oct 2026 | |
| 2 |  | Free | 4.0★ (1) | No | Yes | May 2026 | |
| 3 |  | Free | 3.5★ (79) | Yes | No | Oct 2026 | |
| 4 |  | Free | 3.5★ (950) | No | Yes | Oct 2026 | |
| 5 |  | Free | 1.0★ (1) | Yes | No | Aug 2026 | |
| 6 |  | Free | — | Yes | No | May 2026 | |
| 7 |  | Free | 4.3★ (1K) | Yes | Yes | Oct 2026 | |
| 8 |  | Free | 4.2★ (4.5K) | Yes | Yes | Oct 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 provides a digital ruler for measuring the length and diameter of small objects directly on your device. It features a millimeter scale and allows for easy sliding to measure.
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.
