# Trig Calculator — Solve Triangles Chords & More > Calculates missing angles and lengths for triangles, chords, and polygons. (iPhone/iPad app by superllanboy.) - Source: https://appshunter.io/ios/app/trig-calculator/id496367309 (this page in markdown: same URL + `.md`) - Developer: [superllanboy](https://appshunter.io/developer/439292731) - Category: Education, Productivity - Price: $0.99 - Rating: 4.00/5 from 8 App Store ratings · 24 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 1 MB - Languages: American English, Chinese (Simplified, China) - Released: 2012-01-26 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/trig-calculator/id496367309/reviews.md ## What is Trig Calculator? Trig Calculator is an application that simplifies the process of calculating missing angles and lengths of regular and irregular triangles. Includes a Chord calculator for solving circle segments. Also features a calculator for solving regular polygons. Let the application do all the hard work for you - no need for frustrating calculations using Trigonometry. Simply enter 2 elements of a regular triangle and the application solves the missing elements for you. Simply enter 3 elements of an irregular triangle and the application solves the missing elements for you. Simply enter 2 elements of a circle segment and the application solves the missing elements for you. Simply chose a polygon shape and enter one other known value to solve the missing elements. Ideal for school children, students, machinists, carpenters, engineers, other tradesmen, or the general public, wanting to solve triangles,chords and regular polygons simply and efficiently. The application uses Pythagoras,Trigonometry,Calculus, Cosine and Sine rules and simple deduction to give you all the answers you need. ## Key features - Solves regular and irregular triangles - Chord calculator for circle segments - Regular polygon calculator - Uses Pythagoras, Trigonometry, Calculus, Cosine, and Sine rules - User-friendly input for missing elements ## Recent user reviews (10 of 24) All indexed reviews: https://appshunter.io/ios/app/trig-calculator/id496367309/reviews.md ### 5/5 — thank you *2022-05-24, version 2.2.1* to say thank you ... i complete more arc segments than most of buildings for bespoke signs this app has taught me so much i now produce minor sagittas to demonstrate multi radius arcs ### 1/5 — Does not work *2020-09-28* I enter information and nothing happens I need sine given angle in degrees minutes seconds I enter angle, set hypotenuse to one and nothing happens ### 5/5 — Great for school work *2020-04-27, version 2.2.1* Downloaded this app to help my son with his schoolwork. Has really helped us get his head around angles! ### 5/5 — Mummy knows best *2020-04-25, version 2.2.1* Been using this app for a few years now It’s great for helping with homework but more recently I’ve started to use it in my new job too It’s really good ### 5/5 — Great app *2018-07-05, version 2.1* This a great app for finding your chords length Accurate Recommend this app ### 5/5 — Trig App *2016-12-15* Super user friendly. ### 5/5 — Trig calculator *2016-09-28* Very very helpful and easy to use!!! Great job!! ### 5/5 — Trig Calculator is a great app! *2016-03-30* Easy to use ### 5/5 — Excellent app!!! *2015-09-24, version 2.1* This is a simple yet very good app that has saved me so much time at my work. ### 5/5 — Trig calculator *2015-04-28, version 2.1* Great app, with positive and helpful customer service. ## Frequently asked questions about Trig Calculator ### What types of triangles can Trig Calculator solve? Trig Calculator can solve for missing angles and lengths in both regular and irregular triangles. For regular triangles, you need to input two elements, while irregular triangles require three. ### Does Trig Calculator offer a free trial? Trig Calculator is a paid application priced at $0.99 and does not offer a free trial. The purchase provides full access to all its features. ### What mathematical principles does Trig Calculator use? The application utilizes fundamental mathematical principles including Pythagoras, Trigonometry, Calculus, Cosine rules, and Sine rules to provide accurate solutions. ### Is Trig Calculator suitable for younger students? With an age rating of 4+, Trig Calculator is suitable for younger users. It simplifies complex trigonometric calculations, making it an accessible tool for students learning geometry. ### How often is Trig Calculator updated? The latest version, 2.2.1, was released on April 24, 2020. While updates have not been frequent recently, the app is stable and functional for its intended purpose. ### What devices are compatible with Trig Calculator? Trig Calculator is available for iPhone and iPod devices. It is designed to run on these iOS platforms. ### What is the user sentiment for Trig Calculator? Trig Calculator has an average rating of 4.0 stars from 8 ratings, indicating generally positive user reception for its functionality. ### Can Trig Calculator solve problems involving circles? Yes, Trig Calculator includes a dedicated Chord calculator that can solve circle segments by calculating missing elements related to chords. ## Version history (last 5 releases) ### 2.2.1 — 2020-04-24 Programming code enhancements for IOS13 Added data input and output in radians, degrees/minutes/seconds Added angle converter between decimal degrees, radians, and degrees/minutes/seconds Updated interface. ### 2.2 — 2020-04-23 Programming code enhancements for IOS13 Added data input and output in radians, degrees/minutes/seconds Added angle converter between decimal degrees, radians, and degrees/minutes/seconds Updated interface. ### 2.1 — 2014-05-25 Added the ability to calculate triangles using Area as an input, as well as displaying Area when triangles are calculated from other known values. Localisation support for Chinese language. ### 2.0 — 2014-05-06 UI updated for IOS7. Revised input method replacing the ATM style data entry with a conventional number pad. Increased the size of numbers that can be calculated to 15 significant figures. Added a settings page where users can set the number of decimal places to calculate for lengths and angles. Removed Tabbar and replaced with side menu ### 1.2 — 2012-04-13 Added a new tab to calculate missing values of regular polygons. Regular Polygons are shapes in which all the sides and all the internal and external angles are equal. Triangles,Squares,Pentagons,Hexagons,Heptagons,Octagons, Nonogons,Decagons,Undecagons,Dodecagons,Tridecagons and Tetradecagons can be solved by entering one known value of Side length, Perimeter, Area, Circumcircle Diameter or Innercircle Diameter. ## Apps similar to Trig Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [数学口算练习-数学启蒙早教益智软件](https://appshunter.io/ios/app/id1665809560) | 4.5 (33) | $0.99 | Education | | [Worksheet Creator - Teacher AI](https://appshunter.io/ios/app/worksheet-creator-teacher-ai/id1669473620) | 1.3 (3) | Free | Education | | [Memorization:Spaced Repetition](https://appshunter.io/ios/app/memorizationspaced-repetition/id6443955900) | — | Free | Education | | [AKE Teacher](https://appshunter.io/ios/app/ake-teacher/id1673653860) | — | Free | Education | | [Initiationen](https://appshunter.io/ios/app/initiationen/id6443526080) | — | Free | Education | | [Practice German Speaking](https://appshunter.io/ios/app/practice-german-speaking/id1663628060) | 4.6 (42) | Free | Education | ## More apps by superllanboy - [ISO Tolerance](https://appshunter.io/ios/app/iso-tolerance/id493852664) - [Surface Finish](https://appshunter.io/ios/app/surface-finish/id498813301) - [Thread Data](https://appshunter.io/ios/app/thread-data/id550463158) All apps by superllanboy: https://appshunter.io/developer/439292731 --- *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 2026-06-10.*