# Trigonometry Help — user reviews

> 141 indexed App Store user reviews of Trigonometry Help by Armchair Engineering, rated 4.70/5 from 477 ratings.

- Source: https://appshunter.io/ios/app/trigonometry-help/id411415648/reviews
- App overview in markdown: https://appshunter.io/ios/app/trigonometry-help/id411415648.md
- Rating breakdown: 5★ 400 · 4★ 49 · 3★ 11 · 2★ 9 · 1★ 8

## What do users think of Trigonometry Help?

Overall sentiment: positive

**Pros**

- 🚀 Quick and easy to use
- 👍 User-friendly interface
- 🔧 Helpful for tradesmen and professionals
- ⚙️ Accurate calculations
- 🔍 Convenient for on-site use

**Cons**

- 🔢 Limited to right-angled triangles only
- 🔍 Lacks advanced trig functions
- 🔀 No option to rotate/flip the triangle view

**Commonly reported bugs**

- Inconsistent performance on older devices
- Occasional crashes or freezes

**Most requested features**

- Support for irregular triangles
- Ability to show step-by-step workings
- Option to switch between degrees/minutes/seconds and decimal values

## Newest reviews (13 of 141)

### 5/5 — Hyper pratique

*2018-01-16*

Je m’en sers souvent pour mon métier, à la place d’une calculatrice et avec le graphique du triangle, c’est très simple d’utilisation.

### 5/5 — Trig awesome

*2017-12-18*

Best app for calculating lengths been using it for years now be absolutely lost with out it

### 5/5 — Great app

*2017-05-14*

An excellent app for the not so mathematically minded like me. Put in the values you have and the app does the rest.

### 5/5 — Pipefitter

*2017-05-02*

Sooooo handy!!

### 5/5 — Machinist

*2017-04-07*

Great for tool design and the job shop...

### 5/5 — Just right

*2017-01-29*

Simple, fast and easy to read.

### 5/5 — Useful app

*2016-03-06*

You can do the same thing (basic trig functions)in a calculator or a spreadsheet - but somehow this is quicker and more convenient

### 5/5 — Pacla

*2015-12-06*

C'est un outils très facile à utiliser, qui marche très bien et qui donne entière satisfaction.
Je suis bricoleur et j'utilise souvent cet application.
Merci et bravo au concepteur

### 5/5 — Great helper

*2015-11-28*

This help is a problem solver, a really great helper.

### 5/5 — Parfait

*2015-11-26*

Simple rapide efficace

### 5/5 — Helped me cheat on a test! Got 100%

*2015-03-27, version 2.0.1*

Thank you very much for making this app 😘😘

### 5/5 — CNC Machinist

*2014-09-02*

I've wanted a good app to solve unknowns in Right Triangles for a long time.  This app is exactly what I've been looking for.  This app lets you input the known Angles and Sides.   As soon as it has enough info to solve all the remaining Sides and Angles it does so automatically.  This app lets you choose the number of decimal places to round to.  It also lets you choose hours, mins, secs, or a decimal value for Angles.  This app is accurate and it will even display the Triangle if you turn your phone sideways.  Really good app!

### 5/5 — Sehr gut

*2014-08-29*

Eine App. Die mir oft weiterhilft

## Most critical reviews (10 lowest-rated)

### 1/5 — Frechheit

*2019-03-15*

Schwachsinn, nur rechtwinklige dreiecke! Fuer den preis laecherlich

### 1/5 — I can’t believe I bought this based on reviews.

*2018-08-27*

These reviews are obviously fake. There is no way to calculate for cofunctions, tangents, you name it. It can only do basic calculations related to the Pythagorean theorem. This is definitely not a trigonometry app in the least. It’s worthless. I can’t believe I just paid for this garbage.

### 1/5 — Na super :(

*2015-02-28*

Und was ist mit dem Kosinussatz? Der fällt natürlich unter dem Tisch! Sinussatz kriegt jedes 4. Klasse Kind mit etwas Verständnis hin!

### 1/5 — Mr

*2014-12-07*

Waste of money. Very limited in what it can do. Free app does a better job!!

### 1/5 — Waste of $$$$$

*2014-08-30*

Could have looked the formulas up in an old textbook. Was expecting that given measurements and angles the app would spit out an answer. Nada.

### 1/5 — Absolut schlecht!!!!

*2012-12-16*

Ich habe mir von dieser App. Mehr erhofft als nur Winkel ausrechnen zu können! Wollte damit für eine Mathe Arbeit lernen.. Aber neeein. Würde sie am liebsten zurück geben und die 1.79€ wieder haben . Lächerlich! O kaufempfehlung !!!

### 1/5 — Useless

*2012-01-07*

It didn't help at all. I plugged in some of the trig questions I have to answer for math and it couldn't solve them. Useless didnt help me at all.

### 1/5 — Not good

*2011-11-01, version 1.1*

Evidently does not work with my iPhone ; labels( locations of parts ?) are not identifed ; no hypotenuse is shown or given; not all angles are shown or given. Never sure if I am entering the correct data for a desired location

### 2/5 — Not for $2

*2017-11-15*

Only does right triangles. Nothing else. They couldn’t even be bothered to include a “clear” or “reset” button.

### 2/5 — Keypad/number pad

*2015-02-18, version 2.0.1*

Degrees minutes and seconds symbols don't appear on the Number pad

## Most praised reviews (10 highest-rated)

### 5/5 — Nickel

*2026-07-28*

5 
sur 5

### 5/5 — Wouldn’t be without this app

*2024-02-02*

For a builder or tradesman this is a great app. I have been using it for around 14 years for setting out concrete slabs, truss height when I know the roof pitch, I wouldn’t be without it and have recommended it to every tradie I work with. Great app, thank you so much.

### 5/5 — Up grade

*2022-02-17*

J’ai up-grad pas de changement 5,49$ ???

### 5/5 — Brilliant little app

*2019-10-05*

This app is a great tool to help you understand and get quick answers to right angled triangle problems.

### 5/5 — Excellent

*2019-09-11*

Excellent tools, fast, use friendly, recommended🍾

### 5/5 — Excellent tool

*2019-08-04*

I use this for carpentry. It’s the perfect tool to quickly find the angles and lengths you need!

### 5/5 — Love it

*2019-07-05*

I’m a Surveyor and should be able to do this in my sleep but with all the new tools I have lost some basic skills. This app is very simple and gets me TGE answer I need in a snap.

### 5/5 — Trig Help

*2019-01-24*

Couldn't ask for an easier to do math. When in school we had to show our work with no calculator. Love this app.

### 5/5 — Trig aide

*2018-06-04*

Tres belle application, facile a employer

### 5/5 — Super App

*2018-02-13*

👍

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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 2026-08-28.*