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 | Aug 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 | Sep 2026 | ||
| 5 | $1.99 | 4.7★ (477) | No | Yes | Sep 2026 | ||
| 6 | Free | 4.4★ (5) | No | No | May 2026 | ||
| 7 | Free | 5.0★ (3) | Yes | Yes | Sep 2026 | ||
| 8 | Free | 5.0★ (4) | Yes | No | Sep 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.