# Sleepit vs zZZ

The clearest difference is update cadence: zZZ at every 2 days against Sleepit's every 11 days. Sleepit's advantage is iOS requirement (11.0 vs 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.

Sleepit ships an update every 11 days, zZZ every 2 days. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Sleepit | zZZ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 2 days** |
| Monetization | — | Free |
| Size | 128 MB | 41 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 12+ |
| Developer | [Shenzhen Miracle Intelligent Technology Co., LTD](https://appshunter.io/developer/1127154367) | [子龙 郭](https://appshunter.io/developer/1499776496) |

## What reviewers say

### Sleepit

[App page](https://appshunter.io/ios/app/sleepit/id6446971490)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Sleepit free?

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

### Is zZZ free?

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

### Do Sleepit or zZZ have ads?

Neither Sleepit nor zZZ shows ads.

### Which is updated more often, Sleepit or zZZ?

Sleepit ships an update every 11 days, and zZZ every 2 days. Most recently, Sleepit was updated on October 8, 2026 and zZZ on October 6, 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.*