# zZz vs zZZ

The clearest difference is review sentiment: zZZ at 100% against zZz's 0%. zZZ also leads on in-app purchases (none vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. zZz sells 1 one-off in-app purchase. zZZ asks for nothing beyond the download.

zZz ships an update every 4 days, zZZ every 2 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | zZz | zZZ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (11 ratings)](https://appshunter.io/ios/app/zzz-sleep-tracker-widget/id1586436109/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 41 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Florian Schweizer](https://appshunter.io/developer/1142213239) | [子龙 郭](https://appshunter.io/developer/1499776496) |

## What reviewers say

### zZz

[App page](https://appshunter.io/ios/app/zzz-sleep-tracker-widget/id1586436109)

Easily log your sleep with a single tap using home or lock screen widgets. Track time in bed, awake time, and actual sleep duration, syncing data with Apple Health for insightful analysis.

**Highlights:** One-tap sleep logging, Home and lock screen widgets, Tracks time in bed, awake, and sleep, Syncs with Apple Health, Siri and Shortcuts integration

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Tier | $0.99 | one-time |


### 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 zZz free?

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

### Is zZZ free?

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

### Do zZz or zZZ have ads?

Neither zZz nor zZZ shows ads.

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

zZz ships an update every 4 days, and zZZ every 2 days. Most recently, zZz was updated on November 3, 2026 and zZZ on November 4, 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.*