Comparison

Napping vs zZZ

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

Head to head
About

Napping

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Help you record every nap and update data into Apple Health sleep. With quick alarm, whenever you want to nap 5 mins or want to sleep whole afternoon,Napping will set up alarm and wake you up!

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
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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~

Screenshots

zZZ4 screens

Verdict

The call

The clearest difference is update cadence: zZZ at every 2 days against Napping's every 31 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Napping ships an update every 31 months, zZZ every 2 days. The most recent releases landed on December 24, 2025 and June 5, 2026 respectively.

Scorecard1 real difference Β· 7 level
Napping versus zZZ: the parameters behind the verdict, then further details
ParameterNappingzZZ
PriceFreeFree
Positive reviewsβ€”100.0% of reviews
Update frequencyEvery 31 monthsEvery 2 days β€” better
AdsNoNo
In-app purchasesNoNo
Monetizationβ€”Free
DevicesiPhone, Apple WatchiPhone, iPad, Apple Watch β€” better
Requires iOS16.0 β€” better17.0
Further details β€” not scored
Size3 MB41 MB
Age rating4+12+
DeveloperHangzhou HeiChe Technology Co., Ltd子龙 ιƒ­

In-app purchases

None

Napping

No in-app purchases

None

zZZ

No in-app purchases

Questions

Is Napping free?
Napping is free to download, with no in-app purchases.
Is zZZ free?
zZZ is free to download, with no in-app purchases.
Do Napping or zZZ have ads?
Neither Napping nor zZZ shows ads.
Which is updated more often, Napping or zZZ?
Napping ships an update every 31 months, and zZZ every 2 days. Most recently, Napping was updated on December 24, 2025 and zZZ on June 5, 2026.

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