# CalcTriangle — Triangle calculator > Right triangle calculator for construction professionals and DIYers. (iPhone/iPad app by Philip Sacchitella.) - Source: https://appshunter.io/ios/app/calctriangle/id362109162 (this page in markdown: same URL + `.md`) - Developer: [Philip Sacchitella](https://appshunter.io/developer/362109165) - Category: Productivity, Utilities - Price: $0.99 - Age rating: 4+ - Requires: iOS 17.6 · 1 MB - Languages: American English - Released: 2010-03-18 - Data updated: 2026-07-25 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/calctriangle/id362109162/reviews.md ## What is CalcTriangle? CalcTriangle is an easy-to-use right triangle calculator built for carpenters, builders, and DIYers. Enter any two sides, or one side and one angle, then tap Calc — CalcTriangle solves the rest and shows all sides, angles, area, and perimeter. Features: • Supports feet, inches, and fractions (down to 1/16") — perfect for construction • Metric mode with centimeters, millimeters, and meters • Tap a field on the triangle to select it, then type your measurement • Foot/Inch buttons with a fraction picker wheel for precise imperial entry • Mode button cycles through display units • Save and load triangles for quick reference on the job site • Clean, simple interface designed for big fingers and bright sunlight Completely rewritten in Swift for iOS 18. Fast, modern, and reliable. ## Key features - Calculates sides, angles, area, and perimeter - Supports imperial (feet, inches, fractions) and metric units - Precise fraction input - Save and load triangle data - Simple interface for job sites ## Chart rankings - #194 in Top Paid · Productivity (US App Store) ## Recent user reviews (10 of 10) All indexed reviews: https://appshunter.io/ios/app/calctriangle/id362109162/reviews.md ### 2/5 — Not expensive but... *2015-06-15* Unusable, too many bugs. For example, if you enter angle A and side A the results are wrong. Also, if you want to edit the last field after a calculation, you have to select another field before and return to the last field unless you will not able to enter a new value, only add numbers to the old value. Lack of backspace button. ClearFld button unavailable after a calculation, you have to reset all values and re-enter all... ### 5/5 — O for ow sum *2013-05-23, version 3.0.1* This is a great app recommend to any builder ### 1/5 — Doesn't work! *2013-01-25* App doesn't work, when you put in values and click calculate, it crashes on iPad. On iPod touch, it doesn't crash, but also doesn't calculate. ### 1/5 — Hate it! *2012-01-15* It worked for 5 minutes. Then all of the sudden it stopped!! No mater what I do it will clear all entries when I hit calculate. Also it refuses to stay on metric after you clear everything. For a buggy as the app is it should be free! I would rather use a pen and paper than to waste my time with this worthless app.. ### 5/5 — Great little app - does what it needs to *2011-12-30* Very Handy ### 1/5 — Does not work *2011-10-18, version 2.0.1* Crashes as soon as you try to enter numbers, waste of money. ### 1/5 — Don't buy it *2011-10-18* It doesn't work. It's a giant waste of money ### 4/5 — Great app, needs metric option. *2010-05-20* Great app, helped with my DIY project. A metric option would be great! 4 stars for now. ### 5/5 — Very helpful! *2010-03-21* Great app! Easy to use and saves me a lot of time with carpentry calculations. Definitely recommend! ### 5/5 — Awesome app! *2010-03-19* For home improvements this is going to make my life so much easier!!! Great job, very easy to use and able to calculate fractional measures. Highly recommend! ## Frequently asked questions about CalcTriangle ### What units does CalcTriangle support? CalcTriangle supports imperial units including feet, inches, and fractions down to 1/16". It also offers a metric mode with centimeters, millimeters, and meters for versatile use. ### How does CalcTriangle handle input? You can enter any two sides, or one side and one angle. The app then calculates the rest. It features a fraction picker wheel for precise imperial entry. ### Can I save my calculations with CalcTriangle? Yes, CalcTriangle allows you to save and load triangles for quick reference on the job site. This feature is ideal for professionals who frequently work with specific triangle dimensions. ### Is CalcTriangle suitable for use outdoors? The app has a clean, simple interface specifically designed for big fingers and bright sunlight, making it practical for outdoor use on construction sites. ### What devices is CalcTriangle available on? CalcTriangle is available for iPhone and iPad, running on iOS 18 or later. ### How often is CalcTriangle updated? The latest version is 4.0, updated on February 27, 2026. The app was completely rewritten in Swift for iOS 18, indicating a focus on modern performance and reliability. ### What is the price of CalcTriangle? CalcTriangle is a paid app, available for $0.99. This one-time purchase grants you access to all its features without any recurring fees or in-app purchases. ### Does CalcTriangle have ads? No, CalcTriangle does not contain advertisements. It is a paid application that offers an ad-free experience for its users. ## Version history (last 5 releases) ### 4.0 — 2026-02-27 Completely rebuilt from the ground up in Swift and SwiftUI: • Modern iOS 18 design • Faster, smoother performance • New save/load feature — store triangles for later • Improved fraction picker for precise inch entry • Better support for all iPhone and iPad screen sizes ### 3.0.5 — 2025-06-29 Updated to work in iOS 18.5 ### 3.0.4 — 2013-11-27 Minor bug fix... ### 3.0.3 — 2013-11-21 Built for iOS 7, fixed a couple of bugs and added some better functionality. ### 3.0.1 — 2012-08-09 Fixed an error that popped up and altered the way some of the code reacts. ## Apps similar to CalcTriangle | App | Rating | Price | Category | | --- | --- | --- | --- | | [USB Disk](https://appshunter.io/ios/app/usb-disk/id385275533) | 4.6 (159) | $0.99 | Productivity | | [Right Angle](https://appshunter.io/ios/app/right-angle/id292390648) | 3.9 (30) | Free | Productivity | | [Fraction Calculator PRO #1](https://appshunter.io/ios/app/fraction-calculator-pro-1/id504494723) | 4.9 (752) | $3.99 | Productivity | | [TimeCamp Time Tracker](https://appshunter.io/ios/app/timecamp-time-tracker/id881820002) | 3.1 (69) | Free | Productivity | | [StarLinkAssistant](https://appshunter.io/ios/app/starlinkassistant/id1578034983) | 5.0 (1) | Free | Productivity | | [steelyard](https://appshunter.io/ios/app/steelyard/id1291109620) | 4.7 (297) | Free | Productivity | ## More apps by Philip Sacchitella - [ChooChooW](https://appshunter.io/ios/app/choochoow/id1316755183) All apps by Philip Sacchitella: https://appshunter.io/developer/362109165 --- *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 2026-07-25.*