88+ iOS apps & games curated and reviewed
Measure Toolbox is the household name in rule angle, but it's far from the only option. We track 88+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | Yes | No | May 2026 |
| 2 |  | Free | — | No | No | May 2026 |
| 3 |  | Free | — | No | No | May 2026 |
| 4 |  | Free was $1.99 | — | No | Yes | Aug 2026 |
| 5 |  | Free | — | No | No | Aug 2026 |
| 6 |  | Free | 5.0★ (14) | No | No | May 2026 |
| 7 |  | Free | 1.8★ (5) | No | No | May 2026 |
| 8 |  | Free | — | No | No | Jun 2026 |
Learn about angles in mathematics. Explore different angle types, practice estimation, and identify special angles. This app offers interactive tools for visual learning.
This app digitally recreates various types of slide rules, offering features not possible on physical models like color options and numeric displays. It includes a slideshow of famous slide rules and is best experienced on larger devices.
This app uses your device's camera to calculate angles of polygons in real-time. Simply point your camera at a shape, and it will display the angles on screen. You can then screenshot these calculations for saving.
This utility app provides a portable ruler for on-the-go measurements. It also includes a suite of additional tools like a protractor, spirit level, and various meters for diverse measurement needs.
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 tool allows for instant and accurate angle measurements using a digital protractor, camera overlay, and ruler. It supports 180° and 360° measurements, ideal for students, engineers, builders, and DIYers for various projects.
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.
Transform your device into a digital tape measure. Quickly gauge the size of real-world objects, determine a person's height, and automatically get dimensions for rectangular items. Save and share your measurements easily.
Test your geometry knowledge by accurately guessing angles on screen. This game offers a sleek design, multiple difficulty levels, and engaging game modes to challenge your spatial reasoning skills.
This app quickly calculates unknown angles and sides of right-angled triangles. It offers a workings view for detailed solutions, scale drawings, and a formula reference. Input angles in various formats and customize decimal precision.
This app helps anglers discover, plan, and log fishing trips with powerful maps, forecasts, and community features. Identify fish, track your catches, and connect with other anglers to improve your success on the water.
This utility app functions as a precise digital protractor for measuring angles on your device. It offers a smart instrument for accurate angle measurement, supporting iPhone and iPad. The app is free to download and use.