Free
In-App Purchases

Details

  • Released
  • Updated
  • July 10, 2023
  • December 9, 2025

Features

JC Ring screenshot #1 for iPhone
JC Ring screenshot #2 for iPhone
JC Ring screenshot #3 for iPhone
JC Ring screenshot #4 for iPhone
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About

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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What's New in JC Ring

1.10.17

December 9, 2025

Fix bugs, prompt user experience and international language adaptation

Subscription plans

Monthly Subscription

Monthly mood tracking & reports. Auto-renew.

$1.001 Month
How to cancel JC Ring subscription ⁉️

User reviews

Leaf Support

Pathetic support from Leaf and they even don’t have direct support line. Making all conversations via email.
Don’t buy this ring at all

It’s third party app

It’s third party app… no reply from complaint

Read before you buy this ring

Know that if you buy this ring and experience any problems at all, your investment is wasted if you can’t get the developers help.
You will own a dead piece of electronics.

Now, if the developer responds to this quickly and appropriately, you can choose how to proceed with making a purchase through this company.

otherwise currently, I purchased this ring and it will not connect, and that makes it a bad investment and completely worthless!
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VO2 Max

There is no VO2 Max parameter in the health section. Has it been deleted by the app development team?

Leaf ring

Waste of money
App also dont belong to leaf

Developer apps

FAQ

What health metrics does JC Ring track?

JC Ring tracks a wide range of health metrics including ECG/PPG heart rate, heart rate variability (HRV), stress levels, blood pressure, SpO2, sleep stages (deep, light), sleeping heart rate, sleeping SpO2, steps, distance, calories burned, and active time.

How does JC Ring present health data?

JC Ring displays historical health data trends in beautiful, vivid statistic graphs. Users can view their data by day, week, month, and year for easy access and understanding.

Does JC Ring work with Apple HealthKit?

Yes, JC Ring integrates with Apple's HealthKit to calculate training consumption and simplify input by reading weight data. Training data generated by JC Ring is also synchronized with HealthKit. HealthKit data is not shared with third parties.

What are the subscription options for JC Ring?

JC Ring offers a Monthly Subscription for $1.00 and an Annual Subscription for $9.99. These subscriptions likely unlock premium features or advanced analytics.

Is JC Ring a medical device?

No, JC Ring 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. Data is for personal reference only.

What devices does JC Ring support?

JC Ring currently supports iPhone and iPod devices. The app requires a compatible smart ring for its full functionality.

How often is JC Ring updated?

The latest version of JC Ring is 1.10.17, and it was last updated on December 9, 2025. This indicates a relatively active development cycle.

What is the user sentiment for JC Ring?

JC Ring has a rating of 4.2 stars from 26 ratings, suggesting generally positive user sentiment. Users appreciate its comprehensive health tracking capabilities.