Fy Ring vs ZeitWatch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fy Ring
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◆ A simple and enjoyable application that records daily health data for visual understanding. Utilizing wearable smart rings, it enables effective health management. ◆ The app aims to visualize daily activities and health conditions, encouraging behavioral changes. Manage your daily lifestyle numerically, whether increasing step counts or pursuing better sleep, for a disciplined life and a healthier body. ◆ Key Features: ・Sleep (Duration/Depth) ・Stress ・Heart Rate Variability ・Step/Calories/Distance ・Heart Rate Through this app, gain a deeper understanding of your health and embark on a positive lifestyle transformation. ※ It is important to note that this app is not intended to be a medical device, and the data provided by this app is for general health and wellness purposes only. The app's information is not a substitute for professional medical advice, diagnosis, or treatment.
ZeitWatch
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ZeitWatch is a smartwatch tool App developed based on BLE. The App can obtain data such as Steps, Sleep, Heart Rate, etc. measured by the smart watch. ZeitWatch also supports opening different sports modes to record sports data, and requires mobile phone positioning authorization. In addition, users can view the historical data of authorized relatives and friends through the CARE function. The App supports Apple Health and will synchronize data such as Steps, Calories, Distance, etc. measured by the smart watch to [Apple Health]. The data measured by this ZeitWatch App is for reference only and is not used as a basis for medical diagnosis. It does not provide mission-related medical services. Any medical decision must be based on the medical advice of professional medical providers.
Screenshots
Verdict
The clearest difference is iOS requirement: ZeitWatch at 11.0 against Fy Ring's 15.6. On price, update cadence, ads and in-app purchases 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.
Fy Ring ships an update fortnightly, ZeitWatch monthly. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.
| Parameter | Fy Ring | ZeitWatch |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 77 MB | 102 MB |
| Age rating | 4+ | 17+ |
| Developer | MedVigilance Inc. | Niacom Iletisim A.S. |
In-app purchases
Fy Ring
No in-app purchases
ZeitWatch
No in-app purchases









