# Calculus vs Annoying Brain Challenge

The clearest difference is in-app purchases: Calculus at none against Annoying Brain Challenge's 5. Calculus also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Annoying Brain Challenge sells 5 one-off in-app purchases. Calculus asks for nothing beyond the download.

## The numbers

| Metric | Calculus | Annoying Brain Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (113 ratings)](https://appshunter.io/ios/app/annoying-brain-challenge/id6698880161/reviews)** |
| Number of ratings | — | **113** |
| Positive reviews | — | 20.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 10 days |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 308 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Giro Technology Ltd](https://appshunter.io/developer/1641128177) | [faizan khalid](https://appshunter.io/developer/1650548506) |

## What reviewers say

### Calculus

[App page](https://appshunter.io/ios/app/calculus-math-geek/id6451258362)

**Features:** macOS Compatibility

**In-app purchases:** none


### Annoying Brain Challenge

[App page](https://appshunter.io/ios/app/annoying-brain-challenge/id6698880161)

Engage your mind with a variety of challenging logic puzzles. Solve unique levels with different stories and tricky gameplay within a time limit. This game requires careful thought and strategic techniques to overcome its many brain teasers.

**Highlights:** Multiple logic puzzles, Unique levels with different stories, Timed challenges, High-quality graphics, Tricky gameplay

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3000 coins | $1.99 | one-time |
| UnlocK Level | $2.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Christmas Offer | $5.99 | one-time |
| Halloween Offer | $8.99 | one-time |


## Frequently asked questions

### Is Calculus free?

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

### Is Annoying Brain Challenge free?

Annoying Brain Challenge is free to download, with in-app purchases available.

### Do Calculus or Annoying Brain Challenge have ads?

Annoying Brain Challenge shows ads; Calculus does not.

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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.*