# Sleep Effect vs Anook

The clearest difference is in-app purchases: Sleep Effect at none against Anook's 5. Anook's advantage is iOS requirement (18.0 vs 26.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Anook sells 5 in-app purchases, starting at $2.99 per month. Sleep Effect asks for nothing beyond the download.

Sleep Effect ships an update fortnightly, Anook every 4 weeks. The most recent releases landed on November 9, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Sleep Effect | Anook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Size | 324 MB | 192 MB |
| Requires iOS | 26.1 | **18.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ahmed Nabulsi](https://appshunter.io/developer/1863897890) | [Nous Studio Ltd](https://appshunter.io/developer/1878575505) |

## What reviewers say

### Sleep Effect

[App page](https://appshunter.io/ios/app/sleep-effect/id6762162467)

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

**In-app purchases:** none


### Anook

[App page](https://appshunter.io/ios/app/anook-ambient-sleep-sounds/id6787646108)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Anook Pro Monthly | $2.99 | per month |
| Anook Pro Annual | $8.99 | per year |
| Anook Pro Lifetime | $14.99 | one-time |
| Anook Pro Lifetime | $19.99 | one-time |
| Anook Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Sleep Effect free?

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

### Is Anook free?

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

### Do Sleep Effect or Anook have ads?

Neither Sleep Effect nor Anook shows ads.

### Which is updated more often, Sleep Effect or Anook?

Sleep Effect ships an update fortnightly, and Anook every 4 weeks. Most recently, Sleep Effect was updated on November 9, 2026 and Anook on November 2, 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.*