# The Sleep Lab vs Serenity Engine

The clearest difference is iOS requirement: The Sleep Lab at 13.0 against Serenity Engine's 17.0. On price, ads, in-app purchases and device support 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 | The Sleep Lab | Serenity Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/serenity-engine/id6758733840/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Monetization | — | Free |
| Size | 55 MB | 120 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Jacob Arensman](https://appshunter.io/developer/1873247988) | [ANDREW BRODIE LANDRY](https://appshunter.io/developer/1874662777) |

## What reviewers say

### The Sleep Lab

[App page](https://appshunter.io/ios/app/the-sleep-lab/id6758512601)

**Features:** macOS Compatibility

**In-app purchases:** none


### Serenity Engine

[App page](https://appshunter.io/ios/app/serenity-engine/id6758733840)

Create immersive ambient soundscapes for focus, relaxation, and sleep. Features curated sound presets, binaural beats for brainwave tuning, and a gentle sleep timer. Enjoy a beautiful visualizer and a distraction-free, ad-free interface.

**Highlights:** Curated ambient soundscapes, Binaural beats for brainwave tuning, Focus, Relax, and Sleep modes, Customizable sleep timer, Real-time audio visualizer, Minimalist, ad-free interface

**In-app purchases:** none


## Frequently asked questions

### Is The Sleep Lab free?

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

### Is Serenity Engine free?

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

### Do The Sleep Lab or Serenity Engine have ads?

Neither The Sleep Lab nor Serenity Engine 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.*