249+ iOS apps curated and reviewed
Protractor is the household name in free protractor app, but it's far from the only option. We track 249+ 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 | Oct 2026 | |
| 2 |  | Free | 4.6★ (242) | No | Yes | Oct 2026 | |
| 3 |  | Free | 4.1★ (10K) | No | Yes | Oct 2026 | |
| 4 |  | Free | 3.6★ (10) | Yes | No | Oct 2026 | |
| 5 |  | Free | 4.5★ (1K) | Yes | Yes | Oct 2026 | |
| 6 |  | Free | 4.0★ (2) | Yes | Yes | Sep 2026 | |
| 7 |  | Free | 3.1★ (1.8K) | No | No | Oct 2026 | |
| 8 |  | Free | — | No | Yes | Oct 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 device into a versatile angle measurement tool. Easily measure angles in both degrees and radians with an intuitive interface. Ideal for quick and precise angle readings.
