# eyeStudy vs Reef Bubbles

The clearest difference is ads: Reef Bubbles at none against eyeStudy's shown. On price, in-app purchases, device support and iOS requirement 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 | eyeStudy | Reef Bubbles |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Daily |
| Size | 29 MB | 50 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hoang Harry Tran](https://appshunter.io/developer/1444361234) | [Krishna Raj Salim](https://appshunter.io/developer/1638689285) |

## What reviewers say

### eyeStudy

[App page](https://appshunter.io/ios/app/eyestudy/id6761190625)

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

**In-app purchases:** none


### Reef Bubbles

[App page](https://appshunter.io/ios/app/reef-bubbles/id6761497043)

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

**In-app purchases:** none


## Frequently asked questions

### Is eyeStudy free?

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

### Is Reef Bubbles free?

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

### Do eyeStudy or Reef Bubbles have ads?

eyeStudy shows ads; Reef Bubbles 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.*