249+ iOS apps curated and reviewed
The best slope angle apps on iPhone average 4.3★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.4★ (295) | Yes | No | Aug 2026 |
| 2 |  | Free | 4.5★ (689) | Yes | Yes | Aug 2026 |
| 3 |  | Free | 3.3★ (58) | Yes | No | Aug 2026 |
| 4 |  | Free | 4.2★ (2K) | Yes | Yes | Aug 2026 |
| 5 |  | Free | 4.6★ (15K) | No | Yes | Aug 2026 |
| 6 |  | Free | 4.3★ (104) | No | Yes | Aug 2026 |
| 7 |  | Free | — | No | Yes | Jul 2026 |
| 8 |  | Free | 4.4★ (359) | Yes | Yes | Aug 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 app transforms your phone into a precise leveling tool. It offers accurate angle measurement, inclination detection, and augmented reality features for DIY and professional use. Calibration is simple and quick.
Measure angles and slopes with your phone's camera. Offers real-time angle display, two measurement modes, and the ability to capture and store measurements.
This app transforms your device into a versatile measuring tool. It offers precise angle readings with a digital protractor and bubble level, along with AR-powered distance and volume measurements. Ideal for professionals, DIY enthusiasts, and everyday tasks requiring accuracy.
This utility app functions as a digital bubble level, angle meter, and tilt meter. It helps users align picture frames, measure slopes, and assist with home decoration. Calibration instructions are provided for accurate measurements.
Calculate slope in angle, percentage, or ratio by inputting two sides of a right triangle. This intuitive and easy-to-use application provides the remaining necessary values.
Measure angles precisely on photos or in real-time using your camera. This user-friendly tool allows for unlimited angle measurements simultaneously, with features like scaling and color adjustment for ease of use.
Calculate all aspects of a ramp's dimensions, including slope, run, length, and rise. It can also measure the slope of existing surfaces using your device's sensors. Supports various input combinations for flexible calculations.
This app offers a suite of measurement and detection tools, including a bubble level for alignment, angle measurement, surface flatness checks, and metal detection. It also features an AR ruler for distance measurement and an inclinometer for off-road navigation.
This app provides a precise spirit level using your smartphone's sensors. It helps you align objects horizontally, vertically, or at any angle, making it ideal for DIY projects and handyman tasks. Premium features offer augmented reality and advanced measurement capabilities.
Measure angles and slopes with precision using your device's camera. Offers real-time angle display, multiple measurement modes, and the ability to capture and save measurements for later reference.
Learn about angles in mathematics. Explore different angle types, practice estimation, and identify special angles. This app offers interactive tools for visual learning.
