# Brain Calculus vs 18 Puzzle Game

Brain Calculus and 18 Puzzle Game are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Brain Calculus | 18 Puzzle Game |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 1 MB | 35 MB |
| Requires iOS | **16.2** | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrei Sokolov](https://appshunter.io/developer/570653122) | [Absolutist Ltd](https://appshunter.io/developer/354691168) |

## What reviewers say

### Brain Calculus

[App page](https://appshunter.io/ios/app/brain-calculus/id6605932809)

**Features:** macOS Compatibility

**In-app purchases:** none


### 18 Puzzle Game

[App page](https://appshunter.io/ios/app/18-puzzle-game/id6736483579)

**In-app purchases:** none


## Frequently asked questions

### Is Brain Calculus free?

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

### Is 18 Puzzle Game free?

18 Puzzle Game is free to download, with no in-app purchases.

### Do Brain Calculus or 18 Puzzle Game have ads?

Neither Brain Calculus nor 18 Puzzle Game shows ads.

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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.*