# Trigonometry! vs Calculus

The clearest difference is rating: Calculus at 3.5 against Trigonometry!'s 2.0. Calculus also leads on review sentiment (33% vs 14%). Trigonometry!'s advantage is monetization model (free vs free with in-app purchases) and update cadence (every 4 months vs every 16 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Trigonometry! sells 1 one-off in-app purchase and Calculus sells 13 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Calculus holds the better App Store score, 3.5 against 2.0. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 14% of Trigonometry!'s written reviews are positive against 33% of Calculus's.

Trigonometry! ships an update every 4 months, Calculus every 16 months. The most recent releases landed on September 18, 2026 and July 19, 2026 respectively.

## The numbers

| Metric | Trigonometry! | Calculus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/trigonometry/id1236663817/reviews) | **[3.5 (4 ratings)](https://appshunter.io/ios/app/calculus-pro/id1638196645/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | 14.3% of reviews | **33.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 16 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 29 MB | 40 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AppCrab](https://appshunter.io/developer/1227198215) | [Richard Ssenyonjo](https://appshunter.io/developer/1528776742) |

## 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 |


### Calculus

[App page](https://appshunter.io/ios/app/calculus-pro/id1638196645)

Learn calculus comprehensively through 10 chapters and reinforce your understanding with an interactive quiz game. This app caters to both beginners and advanced learners, offering hints and challenging problems. Enjoy a clear, adaptable interface with font size adjustments and light/dark mode support.

**Highlights:** 10-chapter calculus curriculum, Interactive calculus quiz game, Beginner to advanced learning paths, Adjustable font size, Light and dark mode support, Covers differentiation, integration, and differential equations

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get 1,000 Coins | $0.99 | one-time |
| Get 5,000 Coins | $1.99 | one-time |
| Get 10,000 Coins | $2.99 | one-time |
| Unlock Calculus 1 | $2.99 | one-time |
| Unlock Calculus 2 | $2.99 | one-time |
| Unlock Calculus 3 | $2.99 | one-time |
| Unlock Chapter 5 | $2.99 | one-time |
| Unlock Calculus 8 | $2.99 | one-time |
| Unlock Calculus 9 | $2.99 | one-time |
| Unlock Calculus 4 | $2.99 | one-time |
| Unlock Calculus 6 | $2.99 | one-time |
| Unlock Calculus 7 | $2.99 | one-time |
| Unlock Calculus 10 | $2.99 | one-time |


## Frequently asked questions

### Is Trigonometry! free?

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

### Is Calculus free?

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

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

Calculus is rated higher. Trigonometry! averages 2.0 out of 5 from 4 ratings, while Calculus averages 3.5 from 4 ratings.

### Do Trigonometry! or Calculus have ads?

Neither Trigonometry! nor Calculus shows ads.

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

Trigonometry! ships an update every 4 months, and Calculus every 16 months. Most recently, Trigonometry! was updated on September 18, 2026 and Calculus on July 19, 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.*