# Lullabyte vs Sleep Effect

The clearest difference is in-app purchases: Sleep Effect at none against Lullabyte's 1. Sleep Effect also leads on update cadence (fortnightly vs every 2 months). Lullabyte's advantage is iOS requirement (15.1 vs 26.1). On price, ads and device support there is nothing between them.

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

Lullabyte ships an update every 2 months, Sleep Effect fortnightly. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Lullabyte | Sleep Effect |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 39 MB | 324 MB |
| Requires iOS | **15.1** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [VibeCMD](https://appshunter.io/developer/1879550677) | [Ahmed Nabulsi](https://appshunter.io/developer/1863897890) |

## What reviewers say

### Lullabyte

[App page](https://appshunter.io/ios/app/lullabyte/id6759615211)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lullabyte Pro | $2.99 | one-time |


### Sleep Effect

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Lullabyte free?

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

### Is Sleep Effect free?

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

### Do Lullabyte or Sleep Effect have ads?

Neither Lullabyte nor Sleep Effect shows ads.

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

Lullabyte ships an update every 2 months, and Sleep Effect fortnightly. Most recently, Lullabyte was updated on October 4, 2026 and Sleep Effect on October 11, 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.*