# Trig Solver

> Calculates unknown sides and angles for regular and right triangles. (iPhone/iPad app by Creature Code Mobile, LLC.)

- Source: https://appshunter.io/ios/app/trig-solver/id398450227 (this page in markdown: same URL + `.md`)
- Developer: [Creature Code Mobile, LLC](https://appshunter.io/developer/386736750)
- Category: Utilities, Education
- Price: Free
- Rating: 4.30/5 from 78 App Store ratings · 80 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 8 MB
- Languages: American English
- Released: 2010-10-21
- Data updated: 2026-08-14
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/trig-solver/id398450227/reviews.md

## What is Trig Solver?

A Triangle Solver that has a regular triangle solver as well as a right triangle solver.

Regular Triangle -
Enter one of the following and hit Calculate:
2 sides and an angle
2 angles and a side
3 sides

Right Triangle -
Enter one of the following and hit Calculate:
2 sides
a side and an angle

## Key features

- Regular triangle solver
- Right triangle solver
- Calculate with 2 sides and an angle
- Calculate with 2 angles and a side
- Calculate with 3 sides
- Calculate with side and angle (right triangle)

## What do users think of Trig Solver?

Overall sentiment: mixed

**Pros**

- 👍 Simple and easy to use
- 🚀 Fast calculations
- ✅ Accurate results (for many users)
- 💡 Useful for schoolwork
- 🛠️ Great for job site/machinists
- 💯 Saves time
- 🌟 Life saver for grades

**Cons**

- 🐛 Inaccurate results reported
- 💸 Ads are present and distracting
- 📉 Rounding issues
- 🚫 No option to remove ads (for some)
- ⚠️ App stopped working after updates
- 😵‍💫 Input issues (dark mode, hidden buttons)
- 🤔 Limited decimal places
- ❌ Not for serious/precise engineering

**Commonly reported bugs**

- Calculator rounds to '7' and '0'
- Regular triangle calculations not correct
- Answers in the wrong place (angles reversed)
- App doesn't work anymore after update
- Can't see input in dark mode
- Base hidden behind buttons on older phones
- Fails with small machining angles (gives 90 degrees)
- Wrong values under 'regular triangle'
- Returned wrong values for side angle side
- Incorrect values on irregular triangle
- Paid to remove ads but ads still present
- NaN results

**Most requested features**

- Rotate the triangle
- Show the work/steps
- Add square root functionality
- Option to pay to remove ads
- Modify single value without reset
- Graph resultant triangle
- Show more decimal places (3, 4, or 5)
- Add comma as decimal separator option

## Recent user reviews (10 of 80)

All indexed reviews: https://appshunter.io/ios/app/trig-solver/id398450227/reviews.md

### 5/5 — Outstanding App!

*2026-01-13, version 2.2*

Have been using this Trig Solver for years! Great to have for the machinist on the production floor!

### 1/5 — Useless

*2023-05-06, version 2.2*

Imput side a = 7.03125, imput side b = 0.375. Calculator rounds to '7' and '0'. This leads me to look for settings, to eliminate rounding and - no settings that I can find. Ads, though. Right across the top, nice line of 'em. If you need this for anything serious, don't waste your time with this app.

### 1/5 — Not accurate

*2023-02-05, version 2.2*

Regular triangle calculations not correct!

### 5/5 — Simple and perfect

*2021-11-04, version 2.2*

couldn’t ask for more

### 1/5 — Ads

*2021-04-28, version 2.2*

Screw the ads

### 5/5 — i love this app!

*2021-04-02, version 2.2*

i absolutely love this app. i was looking for a trigonometry calculator for school work and this was perfect! i wish you could rotate the triangle tho. This is a life saver and i truly recommend it, it’s really simple.

### 5/5 — This App Is Lit

*2021-03-31, version 2.2*

I love this app and it seriously is so helpful with my homework. If you struggle with trig then you need this

### 5/5 — Perfect tool

*2021-03-24, version 2.2*

Simple tool that’s great for the job site, no extra unneeded stuff to complicate matters.

### 5/5 — Bah

*2021-03-08, version 2.2*

I personally think it’s pretty nice. It has shown me the correct answers and the add is only on the top, it’s very out of my way. Just wish it would show the work too.

### 3/5 — Be sure the answers pass the “smell” test

*2021-01-12, version 2.2*

I was messing around with the Regular Triangle using random values. I entered 18° for the topmost angle, left side of 12, right side of 25 and solved the triangle. The answers were correct, but in the wrong place. The lower right angle was listed at 128.73° and the lower left angle listed at 33.27°. Those are the correct angles but reversed. Blatant error, please fix.

## Frequently asked questions about Trig Solver

### What can this app calculate?

This app can calculate unknown sides and angles for both regular and right triangles. It offers solutions based on different combinations of known sides and angles.

### What inputs are needed for a regular triangle?

For a regular triangle, you can input two sides and an angle, two angles and a side, or three sides. The app will then calculate the remaining values.

### What inputs are needed for a right triangle?

For a right triangle, you can input two sides or one side and an angle. The app will then compute the missing sides and angles.

### Is this app free to use?

Yes, this application is completely free to use. There are no in-app purchases or advertisements.

### Who would benefit from using this app?

This app is beneficial for students learning geometry and trigonometry, engineers, architects, and anyone who frequently works with triangle calculations.

## Version history (last 5 releases)

### 2.2 — 2020-07-03

Fixed dark mode issue

### 2.1 — 2020-06-29

Layout and bug fixes

### 2.0 — 2017-08-04

Update for iOS 10
Crash Fixes

### 1.1 — 2013-02-26

Update for iOS 6

### 1.0.1 — 2010-11-18

Minor Bug Fix

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## More apps by Creature Code Mobile, LLC

- [Ohm's Law](https://appshunter.io/ios/app/ohms-law/id389305829)

All apps by Creature Code Mobile, LLC: https://appshunter.io/developer/386736750

## Related topics

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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 2026-08-14.*