# Triangles in Geometry vs Speed Trigonometry

The clearest difference is price: Speed Trigonometry at Free against Triangles in Geometry's $1.99. Speed Trigonometry also leads on ratings volume (5 vs 1). Triangles in Geometry's advantage is rating (5.0 vs 4.8) and device support (4 vs 2). On update cadence, ads and in-app purchases there is nothing between them.

Speed Trigonometry is free to download; Triangles in Geometry costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Triangles in Geometry holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Speed Trigonometry has 5 ratings behind it against 1, so its average is the more settled of the two.

Triangles in Geometry ships an update every 27 months, Speed Trigonometry every 14 months. The most recent releases landed on September 2, 2026 and August 8, 2026 respectively.

## The numbers

| Metric | Triangles in Geometry | Speed Trigonometry |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/triangles-in-geometry/id1500084079/reviews)** | [4.8 (5 ratings)](https://appshunter.io/ios/app/speed-trigonometry/id6747187585/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 14 months** |
| Monetization | Paid | **Free** |
| Size | 6 MB | 2 MB |
| Requires iOS | **14.1** | 18.5 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gomathy Shankaran](https://appshunter.io/developer/503956143) | [Nick Petroni](https://appshunter.io/developer/1597208168) |

## What reviewers say

### Triangles in Geometry

[App page](https://appshunter.io/ios/app/triangles-in-geometry/id1500084079)

Learn the fundamentals of triangles, including types, centers, and area calculations. This app explains theorems and postulates with visual aids and includes review quizzes to test understanding.

**Highlights:** Triangle basics (Acute, Obtuse, Right Angle), Triangle centers (Centroid, Incenter, Orthocenter), Area calculations, Triangle theorems and postulates explained, Visual aids and images, Review quizzes

**Features:** Vision Pro support

**In-app purchases:** none


### 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 Triangles in Geometry free?

Triangles in Geometry costs $1.99, with no in-app purchases.

### Is Speed Trigonometry free?

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

### Which has better reviews, Triangles in Geometry or Speed Trigonometry?

Triangles in Geometry is rated higher. Triangles in Geometry averages 5.0 out of 5 from 1 ratings, while Speed Trigonometry averages 4.8 from 5 ratings.

### Do Triangles in Geometry or Speed Trigonometry have ads?

Neither Triangles in Geometry nor Speed Trigonometry shows ads.

### Which is updated more often, Triangles in Geometry or Speed Trigonometry?

Triangles in Geometry ships an update every 27 months, and Speed Trigonometry every 14 months. Most recently, Triangles in Geometry was updated on September 2, 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.*