# AOK Sleep vs ThunderSleep

The clearest difference is ads: AOK Sleep at none against ThunderSleep's shown. AOK Sleep also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. AOK Sleep sells 1 one-off in-app purchase and ThunderSleep sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

AOK Sleep ships an update every 2 months, ThunderSleep every 5 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | AOK Sleep | ThunderSleep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 334 MB | 62 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AOK Labs Limited Liability Company](https://appshunter.io/developer/6787222027) | [Vandita Vasani](https://appshunter.io/developer/6802253805) |

## What reviewers say

### AOK Sleep

[App page](https://appshunter.io/ios/app/aok-sleep/id6792801715)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AOK Sleep Pro | $2.99 | one-time |


### ThunderSleep

[App page](https://appshunter.io/ios/app/thundersleep-sleep-sounds/id6802253803)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Annual | $19.99 | per year |
| Remove Ads | $2.99 | one-time |
| Premium Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is AOK Sleep free?

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

### Is ThunderSleep free?

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

### Do AOK Sleep or ThunderSleep have ads?

ThunderSleep shows ads; AOK Sleep does not.

### Which is updated more often, AOK Sleep or ThunderSleep?

AOK Sleep ships an update every 2 months, and ThunderSleep every 5 weeks. Most recently, AOK Sleep was updated on October 31, 2026 and ThunderSleep on October 25, 2026.

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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.*