# Think vs Stay Sharp

The clearest difference is iOS requirement: Think at 12.0 against Stay Sharp's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Think | Stay Sharp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Size | 86 MB | 3 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [AssetsTech-FZCO](https://appshunter.io/developer/1760299349) | [Harini Gopalswamy](https://appshunter.io/developer/1849976833) |

## What reviewers say

### Think

[App page](https://appshunter.io/ios/app/think-sharp/id6736652958)

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

**In-app purchases:** none


### Stay Sharp

[App page](https://appshunter.io/ios/app/stay-sharp-brain-games/id6765550642)

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

**In-app purchases:** none


## Frequently asked questions

### Is Think free?

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

### Is Stay Sharp free?

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

### Do Think or Stay Sharp have ads?

Neither Think nor Stay Sharp 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.*