250+ iOS apps curated and reviewed
The best incline measure apps on iPhone average 4.4★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.3★ (314) | Yes | No | Nov 2026 | |
| 2 |  | Free | 3.3★ (3) | No | Yes | Jul 2026 | |
| 3 |  | Free | 5.0★ (1) | No | No | Oct 2026 | |
| 4 |  | Free | 4.6★ (112K) | Yes | Yes | Nov 2026 | |
| 5 |  | Free | 5.0★ (3) | No | Yes | Oct 2026 | |
| 6 |  | Free | — | No | Yes | Oct 2026 | |
| 7 |  | Free | 4.2★ (2K) | Yes | Yes | Nov 2026 | |
| 8 |  | Free | — | No | Yes | Sep 2026 |
Easily measure tilt angles with this free protractor app. It displays inclination from 0 to 359 degrees, along with gradient percentages and angles summing to 180 or 360 degrees. Switch to theodolite mode to set a specified angle to zero.
This utility app uses your device's sensors to accurately measure the angle and inclination of surfaces. Save, name, and share your measurements, with advanced features available through an in-app purchase.
This application transforms your iPhone into a precise field clinometer for measuring slopes. It offers two distinct measurement modes and is designed for practical field use with helpful visual aids and data logging capabilities.
