# Unit Circle Practice vs SOH CAH TOA

The clearest difference is price: Unit Circle Practice at Free against SOH CAH TOA's $0.99. Unit Circle Practice also leads on iOS requirement (16.0 vs 18.2). SOH CAH TOA's advantage is in-app purchases (none vs 1) and update cadence (every 3 months vs every 6 months). On ads and device support there is nothing between them.

Unit Circle Practice is free to download; SOH CAH TOA costs $0.99 up front. Unit Circle Practice sells 1 one-off in-app purchase. SOH CAH TOA asks for nothing beyond the download.

Unit Circle Practice ships an update every 6 months, SOH CAH TOA every 3 months. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Unit Circle Practice | SOH CAH TOA |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (20 ratings)](https://appshunter.io/ios/app/unit-circle-practice/id1506653412/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 8 MB |
| Requires iOS | **16.0** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Russell Thorman](https://appshunter.io/developer/1093341902) | [Laurence Stone](https://appshunter.io/developer/1702094763) |

## What reviewers say

### Unit Circle Practice

[App page](https://appshunter.io/ios/app/unit-circle-practice/id1506653412)

Master the unit circle with focused training on angles, radians, coordinates, and exact trig values. Interactive exercises and quizzes build speed and accuracy for pre-calculus and trigonometry students. Unlock advanced tools for deeper understanding and test preparation.

**Highlights:** Interactive drag-and-drop training, Unit circle and exact value quizzes, Clean unit circle guide with summaries, Inverse trig and angle conversion practice, Quadrant sign identification

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime Unlock | $1.99 | one-time |


### SOH CAH TOA

[App page](https://appshunter.io/ios/app/soh-cah-toa/id6742157017)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unit Circle Practice free?

Unit Circle Practice is free to download, with in-app purchases available.

### Is SOH CAH TOA free?

SOH CAH TOA costs $0.99, with no in-app purchases.

### Do Unit Circle Practice or SOH CAH TOA have ads?

Neither Unit Circle Practice nor SOH CAH TOA shows ads.

### Which is updated more often, Unit Circle Practice or SOH CAH TOA?

Unit Circle Practice ships an update every 6 months, and SOH CAH TOA every 3 months. Most recently, Unit Circle Practice was updated on October 6, 2026 and SOH CAH TOA on October 15, 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.*