This app calculates triangles and segments of circles. It supports various angle input formats and offers solutions for oblique triangles and circle segments with optional add-ons. A right triangle calculator is included for free.






82+ iOS apps & games curated and reviewed
Looking for free the right angle apps and games? 18 of our 82+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 3.9★ (30) | No | Yes | Jul 2026 | |
| 2 | Free | 5.0★ (2) | No | No | May 2026 | |
| 3 | Free | 5.0★ (2) | No | No | May 2026 | |
| 4 | Free | 2.0★ (2) | Yes | Yes | May 2026 | |
| 5 | Free | 4.0★ (1) | Yes | Yes | May 2026 | |
| 6 | Free | 4.3★ (353) | Yes | Yes | Jul 2026 | |
| 7 | Free | 2.9★ (10) | Yes | No | May 2026 | |
| 8 | Free | 4.5★ (675) | Yes | Yes | Jul 2026 |






This app calculates triangles and segments of circles. It supports various angle input formats and offers solutions for oblique triangles and circle segments with optional add-ons. A right triangle calculator is included for free.






Calculate side lengths, angles, area, and perimeter of right-angle triangles. Visualizes the triangle with adjustable precision and offers options to rotate, flip, and customize themes. Reuses previous entries for efficiency.






Guide a triangle upwards through challenging obstacles and steep drops. This unforgiving platformer tests your precision and patience. Reach the summit or fall back down in this thrilling adventure.


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 geometry tool simplifies right-angled triangle calculations. It instantly solves for missing sides, angles, area, and perimeter using the Pythagorean theorem and trigonometry. It also displays the formulas used for each calculation, aiding understanding.


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.


This utility app helps you measure angles with your iPhone. It provides notifications when a target angle is reached, with options for visual and auditory alerts.


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.


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.


Engage in a relaxing 3D art puzzle experience by rotating colorful pieces to form complete pictures. This brain-teasing game offers a calming process with no time limits, allowing you to de-stress and train your imagination. Collect various 3D puzzles and share your completed masterpieces.


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.


Measure angles of objects using your device's camera. This utility app acts as a digital protractor, allowing you to accurately determine angles in real-world scenarios. Perfect for when a physical protractor is unavailable.


Instantly solve geometry homework and prepare for exams with this free calculator. It provides complete step-by-step solutions for all triangle quantities, including legs, hypotenuse, height, angles, perimeter, and area. Access learning videos and manage your solutions.


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 digital toolkit for precise measurements. Create 2D and 3D floor plans, scan rooms, and measure distances with advanced AI and computer vision. Ideal for DIY projects, home renovations, and professional use.


This app uses your device's sensors to accurately measure any 2D angle. It intelligently detects orientation and provides readings in degrees, radians, or as a gradient. Ideal for various practical applications requiring precise angle measurements.


Stream a curated selection of inspiring movies and TV shows that promote positive values. Engage with a community to vote on upcoming content and shape the future of entertainment. Access exclusive releases and discounts as a member.


This professional-grade tool measures angles and inclines with precision. It offers features like motion-sensitive auto-locking, relative angle measurement, and haptic feedback for accurate adjustments. Ideal for tasks ranging from picture alignment to complex engineering measurements.


Measure angles precisely using your phone's screen, gyroscope, or camera. Offers smart presets, real-time feedback with high accuracy, and calibration features to adapt to various situations.


This app functions as a digital measuring tool, allowing you to measure objects and distances with accuracy. It also enables you to create sketches with text annotations and share your measurements and designs.