# SleepMatic vs zZZ

The clearest difference is review sentiment: zZZ at 100% against SleepMatic's 48%. zZZ also leads on price (Free vs $1.99) and update cadence (every 2 days vs monthly). SleepMatic's advantage is chart position (#110 vs unranked) and iOS requirement (15.6 vs 17.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

zZZ is free to download; SleepMatic costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SleepMatic ships an update monthly, zZZ every 2 days. The most recent releases landed on November 9, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | SleepMatic | zZZ |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.4 (8.8K ratings)](https://appshunter.io/ios/app/sleepmatic-sleep-tracker/id1179236591/reviews)** | — |
| Number of ratings | **8.8K** | — |
| Positive reviews | 48.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free | Free |
| Best chart rank | **#110** | — |
| Size | 23 MB | 41 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Vimo Labs Inc.](https://appshunter.io/developer/726289669) | [子龙 郭](https://appshunter.io/developer/1499776496) |

## What reviewers say

### SleepMatic

[App page](https://appshunter.io/ios/app/sleepmatic-sleep-tracker/id1179236591)

**Currently charting:** #110 Top Paid · Health & Fitness (US App Store)

Automatically track your sleep cycles and naps using your Apple Watch. Wake up to detailed sleep analysis, including when you fall asleep and wake up. Log your sleep patterns with notes and hashtags to identify trends and factors affecting your rest.

**Highlights:** Automatic sleep tracking, All-day and nap tracking, Tunable detection sensitivity, Detailed sleep analysis, Add notes and hashtags, Manual sleep editing, HealthKit integration

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate sleep tracking
- 💡 Helpful for monitoring sleep patterns
- 👍 Integrates well with Apple Health
- 👍 Detailed sleep data and insights

**What reviewers complain about**

- 🐛 Inaccurate sleep detection
- 🐛 Crashes when viewing trends
- 🐛 Fails to detect some wake-ups
- 🔋 High battery consumption
- 🤔 Difficult to customize settings

**Reported bugs**

- App crashes when trying to view previous sleep data
- Inconsistent sleep tracking, sometimes registers inactivity as sleep
- Fails to sync sleep data to Apple Health on some occasions

**Requested features**

- Add ability to manually edit sleep data
- Improve trend and history visualization
- Implement automatic bedtime/wake up detection
- Provide more customization options


### 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 SleepMatic free?

SleepMatic costs $1.99, with no in-app purchases.

### Is zZZ free?

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

### Do SleepMatic or zZZ have ads?

Neither SleepMatic nor zZZ shows ads.

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

SleepMatic ships an update monthly, and zZZ every 2 days. Most recently, SleepMatic was updated on November 9, 2026 and zZZ on November 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*