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.






250+ iOS apps curated and reviewed
Triangle Calculator is the household name in right triangle solver, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (2) | No | No | May 2026 | |
| 2 | Free | 4.3★ (78) | No | No | Aug 2026 | |
| 3 | Free | 3.6★ (40) | No | Yes | May 2026 | |
| 4 | Free | 4.2★ (30) | No | No | Aug 2026 | |
| 5 | Free | 4.4★ (5) | No | No | May 2026 | |
| 6 | Free | 1.0★ (1) | — | No | Jun 2026 | |
| 7 | Free | 4.0★ (1) | Yes | Yes | May 2026 | |
| 8 | Free | 3.8★ (6) | No | Yes | Aug 2026 |






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.


This application calculates unknown sides and angles of both regular and right triangles. It supports various input combinations, including two sides and an angle, two angles and a side, three sides, or two sides and an angle for right triangles.



This app calculates missing values for both right and irregular triangles. Simply input two known values for a right triangle or three for an irregular one, and it will compute the remaining sides and angles.


Calculate unknown sides and angles of a triangle with ease. Supports various input combinations, including two angles and one side, two sides and one angle, or three sides.


This app helps solve various types of triangles, including SSS, SSA, SAS, AAS, ASA, and AAA. It offers a straightforward and functional tool for geometric calculations.


This free utility app helps users solve triangle-related problems for both right-angled and regular triangles. It also offers solutions for 20 other geometric shapes, making it a versatile tool for calculations.


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.


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.


Easily calculate unknown sides, angles, area, and perimeter of any triangle. Supports both right and oblique triangles with visual input modes and adjustable decimal places for accuracy. Includes a history tape and email sharing for recent calculations.


This tool helps solve triangle problems by calculating unknown sides and angles using given information. It also provides a reference for various triangle formulas and allows interactive manipulation of the triangle.


This utility app calculates missing sides and angles of a triangle given at least three known measures. It displays the formulas used for learning and supports angle input in degrees or radians, with adjustable decimal precision.


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 provides step-by-step solutions for triangle calculations and angle conversions. It includes practice exercises, a trigonometry formula sheet, and an integrated math keyboard for easy input. Ideal for students and professionals needing to master triangle properties.


This educational app helps solve triangle problems. It offers a free version for right-angled triangles and a full version for general triangles. Users can easily select different triangle cases to solve.




Easily solve geometry exercises and verify your calculations with this tool. It simplifies complex problems with a single click, making math more accessible.






Instantly solve academic questions by taking a photo. Get step-by-step explanations, ask follow-up questions, and receive writing assistance. Features include a math solver, AI tutor, and personalized learning sessions.


This application assists users in solving a wide range of geometry problems for both 2D and 3D shapes. It offers solutions for various polygons, circles, ellipses, and complex triangular calculations. Optimized for iPhone, it provides quick and user-friendly geometry problem resolution.