FLUX: Run to Your Heartbeat

Your heart becomes the DJ. FLUX is the first running app that reads your live heart rate and plays the perfect track from YOUR library to match it — in real time. The music reacts to your body. HOW IT WORKS - Connect Apple Music, and a Garmin, Polar, COROS, Whoop or any Bluetooth heart-rate strap. No sensor? Your phone tracks your cadence instead — same sync, zero gear. - FLUX tags every track in your library with a BPM and an Energy Score, sorted into your personal training zones. - FLUX works with the Apple Health app. It reads your resting heart rate, date of birth, biological sex, weight and height to personalise your heart-rate zones, and writes every completed workout back to Health. - Run. Your effort drives the zone, and FLUX crossfades into the matching track automatically — without you touching your phone. WHY FLUX IS DIFFERENT - Real-time, not average. Most apps pick an…