250+ iOS apps curated and reviewed
Protractor is the household name in free protractor app, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 3.9★ (14) | Yes | No | Sep 2026 | |
| 2 |  | Free | 4.6★ (242) | No | Yes | Sep 2026 | |
| 3 |  | Free | 4.5★ (1K) | Yes | Yes | Sep 2026 | |
| 4 |  | Free | 4.1★ (10K) | No | Yes | Sep 2026 | |
| 5 |  | Free | 3.4★ (5) | Yes | No | Sep 2026 | |
| 6 |  | Free | 4.4★ (295) | Yes | No | Sep 2026 | |
| 7 |  | Free | 3.1★ (1.8K) | No | No | Sep 2026 | |
| 8 |  | Free | 4.0★ (2) | Yes | Yes | Sep 2026 |
Measure angles precisely using your phone's screen or camera. This intuitive tool allows you to adjust measurement lines and instantly see the angular difference. Ideal for professionals and hobbyists needing quick, accurate angle calculations.
This app acts as a smart instrument for measuring angles using your device's camera. It offers two free modes for measuring angles on screen or using a plumb bob for slopes, with an additional premium mode for polygon measurements.
Transform your iPhone into a precision angle measuring tool. Easily measure angles in real-time using touch or camera modes, and even analyze angles in existing photos. Customize your tools for a seamless experience.
