zZZ vs Sleepthing
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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~
Sleepthing
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***医疗免责申明*** 本APP展示栋数据仅供参考,不做个别诊断、用药和使用的根据,不替代医生和其他医务人员的建议。用户使用APP信息产生的任何意外、损失或损害,由用户自行负责,APP不承担任何直接或间接的法律责任。 使用本应用程序及服务即表示您同意,您与我司(苏州医电园生物科技有限公司)之间的任何争议或索赔首先应尝试通过双方友好协商解决。如果协商无法解决问题,则该争议将受国际商业惯例和公平原则指导,并根据[选择一个广泛认可的中立地]的法律进行解释和执行,而不涉及其法律冲突原则。 各方同意接受[指定一个国际公认的仲裁机构,如国际商会(ICC)或伦敦国际仲裁院(LCIA)]的专属管辖权进行仲裁,以解决任何由此应用程序和服务引起的或与之相关的争议。仲裁地点为[选择一个中立国城市作为仲裁地点],并按照所选仲裁机构的规则进行。 如果您对本声明有任何疑问或需要进一步的帮助,请通过[提供联系信息,如电子邮件地址或联系电话]联系我们。
Screenshots
Verdict
The clearest difference is iOS requirement: Sleepthing at 12.0 against zZZ's 17.0. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | zZZ | Sleepthing |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 2 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPod |
| Requires iOS | 17.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 34 MB |
| Age rating | 12+ | 17+ |
| Developer | 子龙 郭 | SUZHOU YDY BIOTECHNOLOGY CO.,LTD. |
In-app purchases
zZZ
No in-app purchases
Sleepthing
No in-app purchases









