Comparison

zZZ vs MindSleep

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

zZZ

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
Read full description

zZZ - Sleep Tracker Sleep better with zZZ, your smart sleep assistant. We can analyze your sleep data automatically using your Apple Watch. We using sleep data with the Apple Health app on iPhone empowers you to better manage your sleep. Explore trends about your sleep and compare your sleep quality with many Apple Health metrics that affect sleep. Join us that have discovered the life-changing benefits of great sleep! Track your sleep - Wearing your Apple Watch during sleep. We will automatically detect and analyze your sleep. Analysis your sleep - Detailed sleep stage diagram (Awake, REM, Core Sleep, Deep Sleep) and sleep rate. - Show the percentage & duration of that More Sleep Info - Asleep & Awake time - Explore your sleep history with Day, Week, Month, and Custom Date - Sleeping wrist temperature, Sleeping heartbeat rate, Respiratory rate - Discover all aspects of your sleep Sleep Quality - Analyze your sleep and rate that.Find the bad days or nice dream days - Help you to improve your sleep Setting - Theme Setting - Widget - Notification - More App Icons - Share with friends Watch App - You can also use the app in your watch. Privacy by Design - We uses Apple’s HealthKit API which reads and writes data directly on your device only, and all of your data is stored locally, or on other devices which you enabled iCloud syncing. FINALLY, Wish you have a good night~

About

MindSleep

This app uses AI and your Apple Watch to automatically track and analyze naps and nighttime sleep. It provides detailed insights into sleep quality, recovery, and personalized recommendations to help you improve your sleep habits.

Highlights
  • AI-powered nap detection
  • Automatic Apple Watch tracking
  • In-depth sleep analysis
  • Clear, actionable charts
  • Personalized sleep recommendations
  • Syncs with Apple Health
Features
Read full description

Every nap deserves to be taken seriously. MindSleep is a sleep app built around AI-powered analysis of naps and daytime sleep. With fully automatic Apple Watch tracking and advanced AI analysis, every nap becomes meaningful health data. Whether it's a 20-minute power nap at noon or a short doze in the evening — MindSleep captures it, analyzes it, and tells you what it means. [AI NAP & DAYTIME SLEEP ANALYSIS] A carefully trained on-device AI automatically detects and logs every nap. The new AI engine goes deeper: How good was this nap? How much did your body recover? What's your ideal way to nap? All data syncs to Apple Health — your 24-hour sleep companion. [FULLY AUTOMATIC NIGHT TRACKING] Wear your Apple Watch to bed and MindSleep tracks your entire night. Wake up to a complete sleep report — no buttons, no manual input. [IN-DEPTH SLEEP ANALYSIS] Multi-dimensional insights powered by professional AI algorithms: sleep score, efficiency, stages (Deep / Core / REM), time to fall asleep, awakenings, and consistency — so you can understand your sleep and improve it. [CLEAR, BEAUTIFUL CHARTS] No walls of numbers. Just clean, actionable insights at a glance. [PERSONALIZED RECOMMENDATIONS] Tailored suggestions based on your own data, helping you build healthier sleep habits over time. *Note: MindSleep requires Apple Watch sleep tracking. *Core nap & sleep tracking is free. MindSleep Pro unlocks AI-powered deep analysis. SUBSCRIPTIONS MindSleep Pro: Weekly / Monthly / Yearly Payment will be charged to your Apple Account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions in your Apple Account settings. Terms of Use: https://www.mindsleep.tech/terms Privacy Policy: https://www.mindsleep.tech/privacy Enjoying MindSleep? A rating on the App Store truly helps. Thank you!

Screenshots

zZZ4 screens
MindSleep4 screens

Verdict

The call

The clearest difference is review sentiment: zZZ at 100% against MindSleep's 50%. zZZ also leads on in-app purchases (none vs 3) and update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MindSleep sells 3 in-app purchases, starting at $1.99 per 7 days. zZZ asks for nothing beyond the download.

UpkeepUpdate frequency

zZZ ships an update every 2 days, MindSleep fortnightly. Both last shipped on October 30, 2026.

Scorecard4 real differences · 6 level
zZZ versus MindSleep: the parameters behind the verdict, then further details
ParameterzZZMindSleep
PriceFreeFree
Rating—4.0 (10 ratings) — better
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings—10 — better
Update frequencyEvery 2 days — betterFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS17.017.0
Further details — not scored
Size41 MB68 MB
Age rating12+4+
Developer子龙 郭Chengdu MindSleep Technology

Customer experience

zZZ

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

MindSleep

All ratings10 ratings
Positive70.0%
Neutral10.0%
Negative20.0%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

In-app purchases

None

zZZ

No in-app purchases

3 purchases

MindSleep

Subscriptions3
  • Weekly$1.997 Days
  • Monthly$5.991 Month
  • Yearly$39.991 Year

Questions

Is zZZ free?
zZZ is free to download, with no in-app purchases.
Is MindSleep free?
MindSleep is free to download, with in-app purchases available.
Do zZZ or MindSleep have ads?
Neither zZZ nor MindSleep shows ads.
Which is updated more often, zZZ or MindSleep?
zZZ ships an update every 2 days, and MindSleep fortnightly. Most recently, zZZ was updated on October 30, 2026 and MindSleep on October 30, 2026.

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