LYF Ring Sizing App
Use the Sizing App to get the closest fit possible, the best fingers are the Index and Middle fingers.
LYF-Core
LYF-Core
Includes Free Charger and USB Cable
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Multi-Sport Tracking
Track your daily movement with multiple activity modes designed to monitor how active you are throughout the day.
Heart Rate Monitoring
Keep an eye on your heart health with:
All-day heart rate tracking
Heart rate trends and analysis
7-day heart rate history inside the app
Advanced Sleep Tracking
Understand how well you really sleep:
Sleep duration tracking
Sleep quality score
Sleep stage analysis
4-day sleep history and insights
Sleep Mode
Set your sleep hours in the app and the ring will stay distraction-free during the night.
Blood Oxygen Monitoring
Measure your blood oxygen levels directly from the app:
On-demand oxygen test
7-day oxygen trends and history
HRV – Recovery Tracking
Heart Rate Variability helps measure recovery and stress:
On-demand HRV test
7-day HRV trends and history
Stress Monitoring
Understand how your body handles pressure:
Stress level testing via the app
7-day stress trends and history
Remote Camera Control
Wave your finger to remotely trigger your phone camera — perfect for group photos and selfies.
Smart Counter Mode
Use the ring as a digital counter directly on the display.
Ideal for counting tasks, reps, or daily routines.
Women’s Health Support
Includes physiological cycle reminders to help track important dates.
App Compatibility
Syncs with Apple Health
Works with iOS and Android
Companion App
Powered by the Ectri for easy tracking and insights.

Ectri App Download
The Ectri App is a sport fitness app that collects data on a daily basis