# zZZ vs Sleepthing

The clearest difference is iOS requirement: Sleepthing at 12.0 against zZZ'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 | zZZ | Sleepthing |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | Free | — |
| Size | 41 MB | 34 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [子龙 郭](https://appshunter.io/developer/1499776496) | [SUZHOU YDY BIOTECHNOLOGY CO.,LTD.](https://appshunter.io/developer/1802584024) |

## What reviewers say

### zZZ

[App page](https://appshunter.io/ios/app/zzz-sleep-tracker/id6476821635)

This app analyzes your sleep patterns using data from your Apple Watch and Apple Health. It provides detailed sleep stage diagrams, trends, and insights to help you understand and improve your sleep quality. Features include tracking sleep history, heart rate, and respiratory rate.

**Highlights:** Automatic sleep detection with Apple Watch, Detailed sleep stage analysis (Awake, REM, Core, Deep), Sleep history tracking (Day, Week, Month, Custom), Monitoring of heart rate and respiratory rate during sleep, Sleep quality rating and improvement suggestions, Watch app support, Privacy-focused data storage

**Features:** macOS Compatibility

**In-app purchases:** none


### Sleepthing

[App page](https://appshunter.io/ios/app/sleepthingsleep-tracker/id6745577081)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is zZZ free?

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

### Is Sleepthing free?

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

### Do zZZ or Sleepthing have ads?

Neither zZZ nor Sleepthing 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.*