JC Ring vs Usay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JC Ring
This app integrates with a smart ring to provide comprehensive daily health tracking. It monitors vital signs like heart rate, sleep patterns, and activity levels, presenting data in clear statistical graphs to help users achieve a balanced lifestyle.
- ECG/PPG Heart Monitor
- Sleep Monitoring
- Activity Tracking
- Data Statistics
- Heart Rate Range Analysis
- Stress Level Monitoring
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JCRing is a multi-functional app integrating smart ring for your daily health tracking. By advanced monitor technology and algorithm, the different health devices tells you wide-ranging body information and provide various assists to help you reach your balance of body and mind. Besides your daily activity, it can also get deeply into your heart, sleep, workouts and many other vital sings. This app then illustrates all data in beautiful statistic graphs for you to easily access them. JCRing is packed with useful features when connected with different health devices including: • ECG/PPG Heart Monitor Accurate heart rate measurement with heart rate range analysis. Through research-based algorithm, it shows your HRV, stress level, blood pressure, SpO2, ECG and cardiovascular condition. • Sleep Monitor Record detailed daily sleep status including deep sleep, light sleep, and sleeping heart rate, Spo2 etc. • Activity Tracking 24-hour tracking of your steps, distance, calories-burnt, active-time, and reached daily-goal. • Data Statistics Display historical trend of your health data by day, week, month, and year in vivid statistic graphs. Start a new healthy and active lifestyle with JCRing. If you are using an Apple phone, in order to calculate the training consumption, we will receive and send your sports data from Apple's HealthKit with your authorization. To simplify your input process, we read your weight data from HealthKit. At the same time, the training data generated by your JCRing will be synchronized with Apple's HealthKit. Any information obtained through the use of HealthKit, such as weight and heart rate data, will not be shared or sold to any third party, including advertisers and other agents This application and its associated hardware are intended for wellness and fitness purposes only. They are not a substitute for professional medical equipment and are not designed to diagnose, treat, or prevent any disease. The data and analysis provided by the app are for personal reference only and should not be used as the basis for medical decisions. Always seek a doctor’s advice in addition to using this app and before making any medical decisions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Usay
This app offers a silent companion for self-reflection, tracking emotional states, mental fluctuations, and energy rhythms. It uses advanced physiological sensing to help manage stress, improve sleep, and monitor energy levels, blending seamlessly into daily life.
- Emotional state observation
- Mental fluctuation tracking
- Energy rhythm monitoring
- Stress management
- Sleep improvement
- Physiological sensing
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In a world of constant noise, USAY quietly observes your emotional states, mental fluctuations, and energy rhythms, providing gentle guidance without interruption. Reconnect with yourself through advanced physiological sensing and human-centered design, ensuring technology serves your emotions, understanding, and companionship. Experience a feather-light, silent companion that helps you manage stress, improve sleep, and track your energy, all while blending seamlessly into your life. This is a consumer wellness wearable device, not a medical device. Heart rate, sleep, and stress data are for daily reference only.Not intended for medical diagnosis, treatment, or prevention. Always consult a qualified medical professional before making medical decisions.
Screenshots
Verdict
The clearest difference is review sentiment: Usay at 100% against JC Ring's 46%. Usay also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 2). JC Ring's advantage is ratings volume (26 vs 1) and update cadence (every 10 days vs every 3 weeks). On price, ads 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. JC Ring sells 2 in-app purchases, starting at $1.00 per month. Usay asks for nothing beyond the download.
Usay holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: JC Ring has 26 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 46% of JC Ring's written reviews are positive against 100% of Usay's.
JC Ring ships an update every 10 days, Usay every 3 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | JC Ring | Usay |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (26 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 45.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 26 — better | 1 |
| Update frequency | Every 10 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 326 MB | 162 MB |
| Age rating | 12+ | 17+ |
| Developer | 立华 赵 | Fison Health Co., Limited |
Customer experience
JC Ring
Usay
In-app purchases
JC Ring
- Monthly Subscription$1.001 Month
- Annual Subscription$9.991 Year
Usay
No in-app purchases









