# RainLoop vs Sleep Aquarium

The clearest difference is in-app purchases: RainLoop at none against Sleep Aquarium's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sleep Aquarium sells 1 one-off in-app purchase. RainLoop asks for nothing beyond the download.

## The numbers

| Metric | RainLoop | Sleep Aquarium |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Size | 52 MB | 19 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SANWA Inc.](https://appshunter.io/developer/1878028373) | [Takashi Mizuno](https://appshunter.io/developer/1832426578) |

## What reviewers say

### RainLoop

[App page](https://appshunter.io/ios/app/rainloop/id6760632041)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sleep Aquarium

[App page](https://appshunter.io/ios/app/sleep-aquarium/id6780742952)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleep Aquarium Plus | $4.99 | one-time |


## Frequently asked questions

### Is RainLoop free?

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

### Is Sleep Aquarium free?

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

### Do RainLoop or Sleep Aquarium have ads?

Neither RainLoop nor Sleep Aquarium 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.*