# Angles Calculator

> Calculates and explains right-angled triangle angles, lengths, and area. (iPhone/iPad app by Essence Computing.)

- Source: https://appshunter.io/ios/app/angles-calculator/id368178941 (this page in markdown: same URL + `.md`)
- Developer: [Essence Computing](https://appshunter.io/developer/333177404)
- Category: Education, Utilities
- Price: $0.99 with in-app purchases
- Rating: 4.80/5 from 10 App Store ratings · 17 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 9 MB
- Languages: American English
- Released: 2010-04-22
- Data updated: 2026-08-26
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/angles-calculator/id368178941/reviews.md

## What is Angles Calculator?

Do you need to learn how to determine the angles and lengths of a Right Angle Triangle?  Need to clearly understand which of the sine, cosine and tangent ratios to use?  Need to know how to determine the angle when you know two of the sides.  If the answer is Yes to any of these questions then this App is for you.  The Angles Calculator not only calculates the answers for you but it also tells you how it did it so you can understand how and when to apply the rules for right angle triangles.

New this version: Now the area of the triangle is calculated for you.  An explanation of how this was done is also given.

The App is simple to use.  Just enter an angle and a side or two sides and all the others will be calculated for you.  To see how the answers were arrived at just select the 'Workings' button and a page is shown with a comprehensive set of steps to show how each was calculated.

To enter a value for an angle or a side just touch the diagram on or near the one you want to specify.  The keypad pops up.  Enter the value you want and select OK.  Select the other value and do the same.  When you press OK this time the App calculates the other values.

To start over select 'Clear All'.  All values are reset.  You can now specify two other values.

Note:  The App cannot calculate the answers if you specify two angles and no sides.  It is mathematically impossible.  You have to specify an angle and a side or two sides.

## Key features

- Calculates triangle angles and lengths
- Explains trigonometric ratios (sine, cosine, tangent)
- Shows step-by-step workings
- Calculates triangle area with explanation
- User-friendly input via touch diagram
- Clear all function for resetting

## Pricing and in-app purchases

Base price: $0.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Purchase Sine/Cosine Calculator | $0.99 | one-time |
| Purchase Fractions Calculator | $0.99 | one-time |
| Purchase Fraction/Decimal Calculator | $0.99 | one-time |
| Purchase Averages Calculator | $0.99 | one-time |
| Purchase Spread Add On | $0.99 | one-time |
| Offer Two | $1.99 | one-time |
| Offer Three | $2.99 | one-time |


## Recent user reviews (10 of 17)

All indexed reviews: https://appshunter.io/ios/app/angles-calculator/id368178941/reviews.md

### 1/5 — Don't bother

*2017-08-04*

I've rarely seen such a useless and outdated app. A daylight robbery given for what it does

**Developer response:** I am sorry that the App does not do what you want.  If you can please tell me what you expected of it so I can change the app to meet those expectations.

### 5/5 — Angle calculator

*2013-12-10*

The app is exactly what I need to calculate angle cuts when doing carpentry. It is extremely easy to use.

### 5/5 — Best app I have had

*2013-10-19*

Use it all the time at work works perfect every time thanks for a great app well worth the money

### 5/5 — QS measuring

*2013-08-11*

Awesome app really useful for calculating brick areas.

### 5/5 — Angle calculator

*2013-08-05*

This is one of the best apps I have used for my studies, it explains everything step by step with very clear instructions. Love it

### 5/5 — Great app

*2013-06-10*

Great app did every thing wanted from it.

### 5/5 — Awesome App. I use it for work all the time

*2013-05-20*

Works well

### 5/5 — Mr

*2013-05-16*

Very good to use

### 1/5 — No help

*2013-02-15*

For a pay app it only lets u do tangent and only of a triangle and tries to make you pay for additional formulas its a total waste of money

### 5/5 — Best app!

*2012-06-30*

I design and build furniture. This is my favorite app.  I love it!

## Frequently asked questions about Angles Calculator

### How does Angles Calculator help with learning trigonometry?

Angles Calculator not only provides the answers for right-angled triangle calculations but also shows detailed step-by-step workings. This allows users to understand how trigonometric ratios like sine, cosine, and tangent are applied and when to use them.

### What kind of input does Angles Calculator accept?

Users can input either one angle and one side, or two sides of a right-angled triangle. The app will then calculate all other unknown values. It cannot calculate answers if only two angles are provided without any sides.

### Does Angles Calculator calculate the area of the triangle?

Yes, the latest version of Angles Calculator now calculates the area of the right-angled triangle. It also provides an explanation of how the area was determined, adding to its educational value.

### How easy is it to use Angles Calculator?

The app is designed for simplicity. Users can enter values by simply touching the relevant part of the diagram on screen, which brings up a keypad. Selecting 'Clear All' resets all values for a new calculation.

### What devices is Angles Calculator available on?

Angles Calculator is available for iPhone, iPad, and iPod. It requires iOS 4.0 or later.

### How often is Angles Calculator updated?

The app was last updated on May 24, 2023, with version 1.9.2. This indicates regular maintenance and potential feature additions.

### What is the price of Angles Calculator?

Angles Calculator is a paid app, priced at $0.99. This one-time purchase grants access to all its features.

### What is the age rating for Angles Calculator?

Angles Calculator has an age rating of 4+. This suggests it is suitable for young learners and general users without mature content.

## Version history (last 5 releases)

### 1.9.2 — 2023-05-24

Updated for newer screen sizes

### 1.9.1 — 2019-12-12

Updated UI and in app purchases

### 1.9 — 2019-12-10

Updated the user interface

### 1.8 — 2017-09-11

UI changes for larger screens.

### 1.7 — 2013-09-27

Adds the ability to include other calculators into this App.  
Some bug fixes.

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## More apps by Essence Computing

- [Weight Monitor](https://appshunter.io/ios/app/weight-monitor/id333177401)
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- [Exposure Calculator](https://appshunter.io/ios/app/exposure-calculator/id359149599)
- [Fractions Calculator](https://appshunter.io/ios/app/fractions-calculator/id365570678)
- [Fractions/Decimals/Fractions](https://appshunter.io/ios/app/fractionsdecimalsfractions/id366955739)

All apps by Essence Computing: https://appshunter.io/developer/333177404

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*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 2026-08-26.*