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.
Triangle Solver by William Jockusch




42+ iOS apps curated and reviewed
Out of 42+ If the sides of a triangle are 4, 7, and 8, is it a right triangle? apps on iOS, 17 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 4.2★ (30) | No | No | May 2026 | |
| 2 | Free | 5.0★ (2) | No | No | May 2026 | |
| 3 | Free | 3.6★ (40) | No | Yes | May 2026 | |
| 4 | Free | 4.0★ (209) | No | Yes | Jul 2026 | |
| 5 | $1.99 | 4.7★ (466) | No | Yes | Jul 2026 | |
| 6 | Free | 4.4★ (5) | No | No | May 2026 | |
| 7 | Free | 5.0★ (3) | Yes | Yes | Jul 2026 | |
| 8 | Free | 5.0★ (1) | Yes | No | May 2026 |




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.






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 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.


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


This app helps you quickly solve for unknown angles and sides of right-angled triangles. It provides a workings view for understanding the math, a scale drawing of the triangle, and a reference for basic trigonometric formulas. You can input angles in various formats and choose your desired decimal precision.


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 app calculates key values for right-angled and scalene triangles with high precision. It offers a user-friendly interface, flexible angle units, and includes a reference guide to trigonometric formulas. A subscription unlocks calculation steps and removes ads.


This app simplifies triangle calculations with intuitive inputs and clear diagrams. It covers various triangle types and theorems, offering over 125 calculations and supporting multiple units and languages.


Instantly solve geometry problems and prepare for exams with step-by-step solutions. Input your triangle measurements to calculate all lengths, angles, heights, area, and perimeter. Access a wealth of learning resources and manage your saved solutions.


This app helps users understand and calculate angles and lengths in right-angled triangles. It provides step-by-step workings for each calculation, aiding comprehension of trigonometric ratios and triangle properties. It also calculates the triangle's area with explanations.


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.


Quickly calculate the area of a triangle by inputting its base and height. This tool eliminates the need for manual calculations, making geometry problems faster to solve.


This app simplifies complex math concepts with a wide range of calculation tools. It covers geometry, trigonometry, derivatives, and more, making math accessible for users worldwide. Easily perform calculations for triangles, volumes, areas, and fractions.


Easily calculate any missing side of a right triangle. This user-friendly tool has the Pythagorean theorem formula built-in, requiring only the two known sides to find the third.


Calculate side lengths and angles in right-angled triangles using Pythagorean theorem and trigonometry functions. Learn basic trigonometry concepts. An optional premium version removes ads and unlocks a general triangle calculator.


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 utility app helps you calculate triangle angles and data. It can determine if a corner is 90 degrees by taking measurements and inputting them into the app. You can also use it to calculate right triangle data.




This tool calculates the area, length, and angles of triangles by inputting known side lengths. Developed over five years for a construction company, it offers a simple and user-friendly experience for solving triangle geometry problems.