# Trigonometry! vs Speed Trigonometry

The clearest difference is review sentiment: Speed Trigonometry at 100% against Trigonometry!'s 14%. Speed Trigonometry also leads on rating (4.8 vs 2.0) and in-app purchases (none vs 1). Trigonometry!'s advantage is update cadence (every 4 months vs every 14 months) and iOS requirement (9.0 vs 18.5). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Trigonometry! sells 1 one-off in-app purchase. Speed Trigonometry asks for nothing beyond the download.

Speed Trigonometry holds the better App Store score, 4.8 against 2.0. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews point the same way: 14% of Trigonometry!'s written reviews are positive against 100% of Speed Trigonometry's.

Trigonometry! ships an update every 4 months, Speed Trigonometry every 14 months. The most recent releases landed on September 18, 2026 and August 8, 2026 respectively.

## The numbers

| Metric | Trigonometry! | Speed Trigonometry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/trigonometry/id1236663817/reviews) | **[4.8 (5 ratings)](https://appshunter.io/ios/app/speed-trigonometry/id6747187585/reviews)** |
| Number of ratings | 4 | **5** |
| Positive reviews | 14.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 14 months |
| Monetization | Free | Free |
| Size | 29 MB | 2 MB |
| Requires iOS | **9.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AppCrab](https://appshunter.io/developer/1227198215) | [Nick Petroni](https://appshunter.io/developer/1597208168) |

## What reviewers say

### Trigonometry!

[App page](https://appshunter.io/ios/app/trigonometry/id1236663817)

Master trigonometry with this comprehensive mobile helper. It offers a textbook, visual explanations, and video lessons covering all essential formulas and theorems. Prepare for your exams with detailed content and easy-to-understand explanations.

**Highlights:** Ordered set of basic formulas and theorems, 172 video lessons, Easy-to-read and understand textbook, Covers major trigonometry topics, Visual explanations

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trigonometry Premium | $0.99 | one-time |


### Speed Trigonometry

[App page](https://appshunter.io/ios/app/speed-trigonometry/id6747187585)

This app helps students quickly memorize the unit circle. It quizzes users on sine, cosine, tangent, and inverse trigonometric values for key angles. Developed by students for students, it's ideal for precalculus learners.

**Highlights:** Unit circle memorization, Quizzes on trig values, Focus on key angles, Sine, cosine, tangent, inverse values, Student-developed

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Trigonometry! free?

Trigonometry! is free to download, with in-app purchases available.

### Is Speed Trigonometry free?

Speed Trigonometry is free to download, with no in-app purchases.

### Which has better reviews, Trigonometry! or Speed Trigonometry?

Speed Trigonometry is rated higher. Trigonometry! averages 2.0 out of 5 from 4 ratings, while Speed Trigonometry averages 4.8 from 5 ratings.

### Do Trigonometry! or Speed Trigonometry have ads?

Neither Trigonometry! nor Speed Trigonometry shows ads.

### Which is updated more often, Trigonometry! or Speed Trigonometry?

Trigonometry! ships an update every 4 months, and Speed Trigonometry every 14 months. Most recently, Trigonometry! was updated on September 18, 2026 and Speed Trigonometry on August 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*