# Trigonometry Help

> Triangle Solver + Trig Calc

Canonical page: [https://chrome-stats.com/d/id411415648](https://chrome-stats.com/d/id411415648)

## Overview

- **ID:** `id411415648`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Armchair Engineering
- **Category:** Utilities
- **Rating:** 4.70 / 5 (479 ratings)
- **Version:** 4.0.5
- **Last updated:** 2019-11-09
- **First published:** 2010-12-23
- **Size:** 21 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/trigonometry-help/id411415648)
- **Website:** [https://armchairengineering.com](https://armchairengineering.com/)
- **Privacy policy:** [https://armchairengineering.com/privacy](https://armchairengineering.com/privacy)

## Description

Trig Help is a simple triangle calculator that quickly finds unknown angles and sides of any right-angled triangle. It includes a robust set of features to show the math behind the solutions, view a scale drawing of your solved triangle, and access basic trig formulas.

Enter angles in radians, decimal degrees, or degrees, minutes, and seconds, and customize the number of decimal places. Optional upgrade unlocks the workings view and deeper insights.

## Rankings

- #73,897 — Overall

## Review summary

Trigonometry Help is praised for speed, simplicity, and accuracy, especially for right-triangle calculations used in carpentry, surveying, and fabrication. It auto-solves problems when given known angles/sides and offers decimal/angle-format options with on-screen triangle display. The main drawbacks are its restriction to right triangles and some UI quirks reported by users (e.g., missing clear/reset button and keypad symbol limitations). Overall, a highly useful tool with room for expansion to oblique triangles.

### Pros

- Very fast calculations and responsive performance.
- Easy to use with a simple, clean interface.
- Accurate results for right-triangle problems.
- Highly useful across trades (carpentry, surveying, metal fabrication) for quick estimates and layouts.
- Auto-solving when you input known angles and sides; adjustable decimal places and orientation display.

### Cons

- Limited to right triangles; no oblique triangle support (a recurring theme across reviews).
- Some UI/UX limitations mentioned by users, including lack of a clear/reset button and keypad issues with degrees/minutes/seconds.

## Similar extensions and apps

- [Trigonometry Help Lite](https://chrome-stats.com/d/id1465685523) — 4.70 / 5
- [Trigonometry Calculator.](https://chrome-stats.com/d/id6741517618) — 4.40 / 5
- [Triangle Help](https://chrome-stats.com/d/id1141452575) — 5.00 / 5
- [Trigonometry Pro](https://chrome-stats.com/d/id6767864263)
- [Trigonometry Helper - Solver](https://chrome-stats.com/d/id6737986585) — 4.20 / 5
- [Trigonometry Master](https://chrome-stats.com/d/id1389001905) — 2.50 / 5
- [Trigr - Trigonometry Solver](https://chrome-stats.com/d/id6448587882) — 5.00 / 5
- [Triangle Solver](https://chrome-stats.com/d/id1508047860) — 5.00 / 5
- [Triangle Calculator Plus](https://chrome-stats.com/d/id1623980558) — 5.00 / 5
- [Angle Finder Calculator](https://chrome-stats.com/d/id6757908425) — 3.70 / 5
- [Trig Solver - Trigonify](https://chrome-stats.com/d/id6792816870)
- [CalcTriangle](https://chrome-stats.com/d/id362109162)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id411415648)