Train Smarter
Go Deeper
Train Smarter
Go Deeper
Real-time muscle oxygen feedback, intuitive endurance tools, and flexible workout design—built for athletes who want to know more and go further.
THE EIR APP
Endurance Training, Reimagined.
IN THE MOMENT, TRAINING YOUR WAY.
Your workouts aren’t cookie-cutter—your tools shouldn’t be either. Our platform delivers real-time muscle oxygen feedback, effort pacing, and zone targeting, right when you need it. Indoors or out. Running, cycling, or rowing. You decide the experience—we make it smarter.
KNOW WHERE YOU ARE, KNOW WHAT'S NEXT
Open the app, welcome to your profile page. See your latest threshold, endurance progress, and recovery trends. No digging, all dashboards. Just the key insights that matter most—always front and center.
FAST FRICTIONLESS TRAINING
Test your aerobic threshold or monitor training adaptations with guided experiences you can launch anywhere. Our built-in assessments take minutes, not hours—and deliver results you can act on immediately.
DIG DEEPER INTO YOUR DATA
Every training session is recorded and replayable. Dive into muscle oxygen trends, pacing curves, and recovery patterns. Compare efforts. Spot progress. Surface insights that were invisible before.
Train From Your Wrist.
Everything you need, just a glance away. Our Apple Watch app let you view zones, get haptic feedback, and run assessments—without touching your phone.
INTEGRATIONS
Works with What You Already Use.
Garmin. TrainingPeaks. Strava. We don’t ask you to choose—we fit right in. Share key metrics, overlay data, or simply train with your current gear and routines. No silos, just synergy.
