# Triangle Solver > Calculates unknown triangle sides and angles from given parameters. (iPhone/iPad app by William Jockusch.) - Source: https://appshunter.io/ios/app/triangle-solver/id383052814 (this page in markdown: same URL + `.md`) - Developer: [William Jockusch](https://appshunter.io/developer/342126227) - Category: Education - Price: Free - Rating: 4.20/5 from 31 App Store ratings · 88 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 97 MB - Released: 2010-08-06 - Data updated: 2026-08-16 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/triangle-solver/id383052814/reviews.md ## What is Triangle Solver? If you know two angles and one side of a triangle, quickly and easily calculate the rest. Also handles cases where you know two sides and one angle, or three sides and no angles. ## Key features - Calculate unknown sides - Calculate unknown angles - Two angles and one side input - Two sides and one angle input - Three sides input ## Recent user reviews (10 of 88) All indexed reviews: https://appshunter.io/ios/app/triangle-solver/id383052814/reviews.md ### 5/5 — то что надо. *2024-08-30, version 9.0* пользуюсь очень давно. удобный вид и управление. ### 5/5 — Useful Results *2023-10-16, version 9.0* With one known side and any other combination of two more known quantities?(angle or side), you get quick results up to 5 decimal places for lengths and areas. Plus the triangle diagram changes to show the shape of your results. Very useful indeed! ### 5/5 — Big Help *2022-10-11, version 9.0* Thank you for making this app and for doing so as an ad free service. I use this when calculating how I am flying my festival kites. Thank you for your kindness. 😃 ### 5/5 — Slick! *2022-04-26, version 9.0* I'm impressed by the simplicity of the interface and the excellent graphics. At first, I thought the app was rather bulky but then realised the displayed triangle is re-drawn according to user input to present its true shape! Very impressive. ### 5/5 — KISS - wie man es sich wünscht *2021-05-23, version 9.0* Die App macht genau das, was man von ihr erwartet! Auf das Wesentliche reduziert, aber dafür super übersichtlich und sehr gut zu bedienen! Danke ### 5/5 — Great tool *2021-03-10, version 9.0* Simple to use. ### 5/5 — Mise à jour *2021-01-25, version 9.0* Parfait, mais pas de mise à jour IOS.... Donc inutilisable... ### 1/5 — Stopped working on iPhone and iPad *2020-12-18, version 9.0* Has stopped working on iPhone and iPad. Probably needs to recompile. ### 5/5 — Без рекламы и покупок решает тригонометрию *2020-09-06, version 9.0* После рытья в куче хлама с неприличным количеством рекламы или подписками, нашел наконец нормальное приложение. Спасибо авторам!) ### 5/5 — DAAAAAANKE *2020-09-01, version 9.0* Einfach nur Danke! Solche Leute sollten einen Oskar bekommen... Danke! ## Frequently asked questions about Triangle Solver ### What can this app calculate? This app can calculate the unknown sides and angles of a triangle. It handles various input scenarios, including when you know two angles and one side, two sides and one angle, or even all three sides. ### What are the input options for solving triangles? You can input two angles and one side to find the remaining elements. Alternatively, the app supports cases where you provide two sides and one angle, or all three sides. ### Is this app free to use? Yes, this application is completely free to download and use. There are no costs associated with its functionality. ### What kind of users would benefit from this app? This app is ideal for students learning geometry or trigonometry, as well as professionals like engineers and architects who frequently work with triangle calculations. Anyone needing to quickly solve triangle problems will find it useful. ## Version history (last 4 releases) ### 9.0 — 2017-05-13 This app has been updated by Apple to display the Apple Watch app icon. 64 bit support On-screen keyboard instead of Apple keyboard ### 5.3 — 2013-02-14 Fixed for iOS 6 ### 4.40 — 2012-04-21 iPad support ### 1.0 — 2010-08-05 No release notes. ## Apps similar to Triangle Solver | App | Rating | Price | Category | | --- | --- | --- | --- | | [Geometry Calculator Solver](https://appshunter.io/ios/app/geometry-calculator-solver/id1601846565) | 3.0 (1) | Free | Education | | [Pythagoras Calculator](https://appshunter.io/ios/app/pythagoras-calculator/id1270384222) | 4.6 (242) | Free | Education | | [Trigonometry calc](https://appshunter.io/ios/app/trigonometry-calc/id1306864057) | 3.0 (2) | Free | Education | | [Geometry!!](https://appshunter.io/ios/app/geometry/id914997126) | 4.5 (56) | Free | Education | | [Triangle & Angle calculator](https://appshunter.io/ios/app/triangle-and-angle-calculator/id1278963382) | 4.0 (209) | Free | Education | | [Pythagorean Theorem Calc App](https://appshunter.io/ios/app/pythagorean-theorem-calc-app/id1619312460) | — | Free | Education | ## More apps by William Jockusch - [EduCalc Classic Pro](https://appshunter.io/ios/app/educalc-classic-pro/id369480853) - [EduCalc Classic](https://appshunter.io/ios/app/educalc-classic/id378009553) - [Ad-Free Unit Converter](https://appshunter.io/ios/app/ad-free-unit-converter/id379646417) - [Yacht Free](https://appshunter.io/ios/app/yacht-free/id381091241) - [Days between Dates](https://appshunter.io/ios/app/days-between-dates/id382014541) All apps by William Jockusch: https://appshunter.io/developer/342126227 ## Related topics [carpenter triangle](https://appshunter.io/ios/topics/carpenter-triangle) · [triangle solver for ios 7](https://appshunter.io/ios/topics/triangle-solver-for-ios-7) · [lil triangle](https://appshunter.io/ios/topics/lil-triangle) · [william jockusch](https://appshunter.io/ios/topics/william-jockusch) · [right triangle solver](https://appshunter.io/ios/topics/right-triangle-solver) · [isosceles triangle pro](https://appshunter.io/ios/topics/isosceles-triangle-pro) · [angle finder triangle](https://appshunter.io/ios/topics/angle-finder-triangle) · [surface area calculator](https://appshunter.io/ios/topics/surface-area-calculator) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-16.*