# Trigonometric Time Attack vs Unit Circle Calculator

The clearest difference is in-app purchases: Trigonometric Time Attack at none against Unit Circle Calculator's 8. Unit Circle Calculator's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Unit Circle Calculator sells 8 one-off in-app purchases. Trigonometric Time Attack asks for nothing beyond the download.

Trigonometric Time Attack ships an update every 2 months, Unit Circle Calculator every 3 weeks. The most recent releases landed on September 27, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Trigonometric Time Attack | Unit Circle Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.4 (8 ratings)](https://appshunter.io/ios/app/unit-circle-calculator/id1606376248/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 182 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [takamitsu furuya](https://appshunter.io/developer/1599281350) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### Trigonometric Time Attack

[App page](https://appshunter.io/ios/app/trigonometric-time-attack/id1599281348)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Circle Calculator

[App page](https://appshunter.io/ios/app/unit-circle-calculator/id1606376248)

Visualize and understand the unit circle with step-by-step calculations, diagrams, and animations. Supports various input formats and saves your work in a history for easy access and sharing.

**Highlights:** Unit circle visualization, Step-by-step calculation explanations, Diagrams and animations, Supports negative, decimal, fraction, and π inputs, Calculation history, Shareable solutions

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +30 User Tokens | $0.29 | one-time |
| +1 Convenience Token / 6h, max. +2 | $0.59 | one-time |
| +2 Convenience Tokens / 6h, max. +4 | $0.99 | one-time |
| +150 User Tokens | $0.99 | one-time |
| +300 User Tokens | $1.49 | one-time |
| +4 Convenience Tokens / 6h, max. +8 | $1.59 | one-time |
| Remove Ads | $1.99 | one-time |
| Lifetime Access | $1.99 | one-time |


## Frequently asked questions

### Is Trigonometric Time Attack free?

Trigonometric Time Attack is free to download, with no in-app purchases.

### Is Unit Circle Calculator free?

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

### Do Trigonometric Time Attack or Unit Circle Calculator have ads?

Trigonometric Time Attack shows ads; Unit Circle Calculator does not.

### Which is updated more often, Trigonometric Time Attack or Unit Circle Calculator?

Trigonometric Time Attack ships an update every 2 months, and Unit Circle Calculator every 3 weeks. Most recently, Trigonometric Time Attack was updated on September 27, 2026 and Unit Circle Calculator on September 14, 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.*