SleepTrack vs zZz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SleepTrack
Easily log your sleep duration and wake times. Gain insights into your sleeping habits with detailed reviews and averages. The app offers guidance to help identify good or bad sleep patterns and integrates with Apple Watch and HealthKit.
- Track time in bed
- Log go-to-bed and wake-up times
- Review sleep duration
- Trace sleeping habits
- Detect good/bad sleep
- Review sleep averages
- Apple Watch integration
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Feeling sleepy again? Would you like to take your sleep time under control? Or you are just curious? Introducing - SleepTrack. This app will allow you to track how much time you spend in bed, provide an overview of your "go to bed" times and time when you awake. Tap Sleep before going to bed - tap Awake when you woke up and this is it. - Review your sleep duration - Trace your sleeping habits - Guides to help you detect good or bad sleep - Review your sleep Averages to determine your next goals - Handy notification center widget - SleepTrack is also on Apple Watch for even better control - Sync your data with Health app using Health Kit integration and sync *** Please note that currently developers are not able to use sensors in Apple Watch so app currently will help you track your asleep time.
zZz
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.
- One-tap sleep logging
- Home and lock screen widgets
- Tracks time in bed, awake, and sleep
- Syncs with Apple Health
- Siri and Shortcuts integration
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One Tap and your sleep schedule is tracked. Add a small widget to your home or lock screen, tap it before going to bed and after waking up and your sleep is tracked. It doesn't get any easier than this. Widgets: • Go to bed • I just woke up • Used to track your sleep as easy as possible Shortcuts & Siri: • Go to bed • I just woke up • Used to track your sleep as easy as possible via Siri, Shortcuts or Automations • Activate in the zZz settings Your time in bed, time awake (the duration before you fall asleep) and your actual sleeping time is saved to Apple Health. The same data is also read from Apple Health to give you great insights into your sleeping schedules.
Screenshots
Verdict
The clearest difference is rating: SleepTrack at 4.0 against zZz's 2.9. SleepTrack also leads on review sentiment (38% vs 0%) and in-app purchases (none vs 1). zZz's advantage is update cadence (every 4 days vs monthly). On price, ratings volume, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. zZz sells 1 one-off in-app purchase. SleepTrack asks for nothing beyond the download.
SleepTrack holds the better App Store score, 4.0 against 2.9. Both are backed by a comparable volume of ratings — 16 and 11 respectively. Written reviews point the same way: 38% of SleepTrack's written reviews are positive against 0% of zZz's.
SleepTrack ships an update monthly, zZz every 4 days. Both last shipped on October 24, 2026.
| Parameter | SleepTrack | zZz |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (16 ratings) — better | 2.9 (11 ratings) |
| Positive reviews | 37.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 16 — better | 11 |
| Update frequency | Monthly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 1 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | a3team | Florian Schweizer |
Customer experience
SleepTrack
zZz
Bugs and requests
SleepTrack
Reported bugs
10 issues- App not updated for newer iOS/watchOS versions
- Data not transferred to new phone
- Cannot see 'awake' button in the morning
- Sleep not recorded if less than 15 minutes
- App crashes or doesn't work
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- No data recorded
- Watch app doesn't work or is useless
- Sleep timer can be accidentally deactivated
- Time zone issues when traveling
- Sleep data is confusing
Requested features
14 requests- Option to change time format to AM/PM
- Ability to add notes (e.g., how felt next day)
- Option to record short naps
- Export data to CSV
- Sleep reminder
Show 9 moreShow fewer
- Weekly/monthly graphs
- Icon on the badge for forgotten stops
- Time Zone adaptation for travel
- Option to edit clock for easier reading
- Add a number for cumulative sleep over 24 hours
- Change log entry section color
- Change color when entering sleep mode
- Auto-sync with Health app
- Make minimum sleep duration optional
zZz
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SleepTrack
No in-app purchases
zZz
- Pro Tier$0.99
