Connect your Garmin, Strava, Suunto, or COROS account. ZoneSense analyzes your actual workout data and delivers precise, personalized heart rate training zones. No lab test required.
220 minus your age. That’s how most watches calculate your zones. It’s a population average from the 1970s. It can be off by 20+ beats per minute. Your Garmin zones don’t match your Strava zones because both are guessing. A lab lactate test costs $200+. There should be a better way.
Link your fitness account. We read your workout history securely. Nothing is stored beyond the analysis.
Our algorithm examines your heart rate patterns across dozens of workouts. It detects thresholds, drift, and intensity distribution to map your real physiology.
Get your 5 personalized zones with a clear breakdown of how they were calculated. Export them back to your watch or platform.
Not another subscription. Not another training platform. Just the one thing your watch gets wrong, done right.
Aggregate heart rate data from multiple platforms for a richer, more accurate analysis. Use Strava for runs and Garmin for rides? We merge it all.
We show exactly how your zones were derived. See the data points, the thresholds detected, and the confidence level. No black box.
Pay once for your zone analysis. No subscription lock-in. Come back when your fitness changes and re-analyze at any time.
Push your calculated zones back to Garmin Connect or Strava. Update your watch in seconds so every future workout uses your real zones.
Train in the right zone. Every session. Every sport. Built from the workouts you’ve already done.