Comparison

zZZ vs KeepBar+

Price, ratings, monetisation and update history for both apps, side by side β€” 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

KeepBar+

Features
Read full description

KeepBar+ is your personal companion for breaking bad habits, overcoming urges, and building lasting self-discipline. Because endurance is also a form of cultivation. BREAK FREE FROM BAD HABITS Struggling with unwanted behaviors? KeepBar+ helps you: - Track your streak of staying free from bad habits - Build willpower through timed endurance sessions - Replace negative patterns with mindful practice OVERCOME URGES AND BUILD SELF-CONTROL Everyone faces moments of temptation. Use KeepBar+ to: - Set countdown timers when urges strike - Stay focused with calming white noise (PRO) - Transform resistance into personal growth Endurance is a form of cultivation. Every moment you resist builds inner strength. CORE FEATURES - Focus Timer: Set customizable practice sessions and stay committed to your goals. Track your daily cultivation time and build lasting habits. - Five Elements System: A unique gamification approach based on Eastern philosophy. Balance your practice across five elements and unlock deeper insights. - Cultivation Levels: Progress through different stages of mastery. Watch yourself grow from beginner to advanced practitioner as you accumulate practice time. - Practice Calendar: Visualize your journey with a beautiful calendar view. See your streaks, celebrate consistency, and stay motivated. TRACK YOUR PROGRESS - Daily, weekly, and monthly statistics - Practice history with detailed records - Achievement system to celebrate milestones PRO FEATURES Unlock PRO with a one-time purchase ($1.99) for the complete experience: - White Noise and Ambient Sounds: Immerse yourself in calming soundscapes including rain, ocean waves, forest sounds, and more - Unlimited practice plans - Unlimited history records - Unlock higher cultivation levels Start your journey today. Break bad habits, build self-discipline, and transform your life one session at a time. --- Terms of Service: https://inchcosmos.com/keepbar-plus/terms.html Privacy Policy: https://inchcosmos.com/keepbar-plus/privacy.html

Screenshots

zZZ4 screens
KeepBar+4 screens

Verdict

The call

The clearest difference is in-app purchases: zZZ at none against KeepBar+'s 4. KeepBar+'s advantage is iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. KeepBar+ sells 4 in-app purchases, starting at $4.99 per month. zZZ asks for nothing beyond the download.

UpkeepUpdate frequency

zZZ ships an update every 2 days, KeepBar+ every 4 days. The most recent releases landed on November 4, 2026 and October 28, 2026 respectively.

Scorecard2 real differences Β· 6 level
zZZ versus KeepBar+: the parameters behind the verdict, then further details
ParameterzZZKeepBar+
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 2 days β€” betterEvery 4 days
AdsNoNo
In-app purchasesNo β€” betterYes
MonetizationFreeβ€”
DevicesiPhone, iPad, Apple Watch β€” betteriPhone, iPod
Requires iOS17.013.0 β€” better
Further details β€” not scored
Size41 MB46 MB
Age rating12+9+
Developer子龙 ιƒ­δΏ‘η§‘ 刘

In-app purchases

None

zZZ

No in-app purchases

4 purchases

KeepBar+

Subscriptions3
  • PRO Monthly$4.991 Month
  • PRO Quarterly$11.993 Months
  • PRO Yearly$35.991 Year
One-time1
  • PRO Lifetime$1.99

Questions

Is zZZ free?
zZZ is free to download, with no in-app purchases.
Is KeepBar+ free?
KeepBar+ is free to download, with in-app purchases available.
Do zZZ or KeepBar+ have ads?
Neither zZZ nor KeepBar+ shows ads.
Which is updated more often, zZZ or KeepBar+?
zZZ ships an update every 2 days, and KeepBar+ every 4 days. Most recently, zZZ was updated on November 4, 2026 and KeepBar+ on October 28, 2026.

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