Joint Active Systems vs Da Rings
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Joint Active Systems
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The Joint Active Systems mobile app includes tools to help with the use of your JAS device. JAS devices safely restore joint motion using stress relaxation and low-load stretch: the very technique therapists use when providing hands-on therapy in the clinic.
Da Rings
This app offers detailed motion recording, sleep tracking, and exercise analysis. It encourages a healthy lifestyle by connecting with smart devices and sharing data with Apple Health.
- Motion recording
- Sleep tracking
- Exercise analysis
- Smart device connection
- Apple Health integration
- Personal reminders
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Da Rings provides you with accurate motion recording, sleeping details and exercise analysis. Encourage you to love sports, enjoy a positive and healthy lifestyle, and meet a better you. • Connect with mutiple smart devices • Accurate recording for each movement • Intimate sleeping keeper • Comprehensive assessment of body condition • Multifunction personal reminder • Discover more fun Apple Health App Sharing - Integrates with Apple Health App Disclaimer: Da Rings is designed for general wellness purposes only and is not a medical device. The information provided by the app is not intended to diagnose, treat, cure, or prevent any disease or medical condition. Users should consult a qualified healthcare professional before making any medical decisions.
Screenshots
Verdict
The clearest difference is update cadence: Da Rings at every 3 weeks against Joint Active Systems's every 33 months. Da Rings also leads on chart position (#163 vs unranked). 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.
Joint Active Systems ships an update every 33 months, Da Rings every 3 weeks. The most recent releases landed on January 1, 2026 and October 14, 2026 respectively.
| Parameter | Joint Active Systems | Da Rings |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.6 (165 ratings) — better |
| Positive reviews | — | 18.8% of reviews |
| Number of ratings | — | 165 — better |
| Update frequency | Every 33 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Best chart rank | — | #163 — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.4 — better | 13.0 |
| Further details — not scored | ||
| Size | 2 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | Bonutti Technologies | MO YOUNG LIMITED |
In-app purchases
Joint Active Systems
No in-app purchases
Da Rings
No in-app purchases
