Your body,
scored to the beat.
Adaptive workout music that follows heart rate, cadence, and session intensity. Pair your watch, pick a program, and let the mix adapt bar by bar.
Join the waitlist for one year of free membership, founding-member discounts thereafter.
Open the app and know what comes next.
See your streak, what is in progress, and the sessions ahead for the week so you spend less time planning and more time training.
Start every day with a clear plan.
Repbeats puts momentum, waiting workouts, and the next block on your calendar in one place. When you want new music, open the library or go straight into a session. For live progress and playback, see current progress.
Never lose the thread mid-week.
Pick up an in-progress workout, see what is scheduled next, and control music without breaking flow between sets or days.
Stay oriented between sessions.
Your active workout, what is coming up, and the track playing live on one screen. You check time and queue without hunting through tabs or losing the rhythm you built.
Build the soundtrack you want to hear.
Search your library, rediscover recent favorites, and spot what is trending so pre-workout browsing takes minutes instead of a long detour.
Choose the right program for today.
Cardio rows for effort, meditation rows for recovery, and clear duration and difficulty so you start confident instead of guessing which block fits your energy.
Let your watch steer the tempo.
Connect Apple Health, Fitbit, or Whoop once and Repbeats uses live heart rate to adapt BPM during intervals. One active device keeps your stream consistent when you switch bands.
Train with music that follows your effort.
During a session you see phase timelines, target BPM, and controls that stay reachable mid-sprint while the mix adjusts with your heart rate and pace.
Every screen serves the session.
Field notes from the tempo lab.
Drops on wearables onboarding, louder mixes that still respect neighborhoods, roadmap blurbs, and zero spam. Prefer RSS later? Mention it. When we flip the switch you will be first.
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Three signals.
One track.
Heart rate, motion, and the beat you hear merge into one target tempo, updated every bar so the mix stays with your session.
Listen to the body.
Heart-rate from your watch, cadence from the phone's IMU, effort from our model. All on-device, 10 samples a second.
Decide the tempo.
A lightweight model blends signals with your mode goal to pick the next target BPM, updated every bar, not every song.
Deliver the mix.
Our auto-DJ time-stretches and crossfades between licensed tracks. You hear one continuous song that happens to change.
From the tempo lab.
Field notes on training, music, and recovery — the science behind how Repbeats adapts to your body.
Why Your Body Syncs to a Beat
Auditory-motor synchronization explained: how rhythm pulls movement into a shared timing system, what your brain predicts on each beat, and how to use it in training.
What Is BPM and Why It Matters for Your Workout
Beats per minute, explained for athletes: how song tempo lines up with your stride, why the right beat makes hard work feel lighter, and starter BPM ranges for walks, runs, and intervals.
Your Brain on Music During a Workout
What actually happens in your head when you train with music, why it makes hard work feel easier, and how to pick the right beat-backed by real studies.
Common questions.
What Repbeats does, how it follows your effort, and what to expect before launch.
What is Repbeats?
Repbeats is a fitness app that syncs music to your workout. It adapts playlist tempo (BPM) to your heart rate, cadence, and intensity while you follow guided cardio and meditation programs.
How does Repbeats match music to my workout?
It reads live heart rate from your wearable and cadence from your phone, then picks a target BPM and uses an auto-DJ to time-stretch and crossfade licensed tracks so the mix follows your effort, updated every bar.
Which wearables and music services does Repbeats support?
You can connect an Apple Watch, Fitbit, or Whoop for heart rate, and stream from Apple Music or Spotify Premium. More devices are on the way.
Is Repbeats available yet?
Repbeats is launching on iOS and Android. Join the waitlist for early access — founding members get one year of free membership, with founding-member discounts after that.
How much does Repbeats cost?
Waitlist founding members receive one year of full membership at no charge after launch, then founding-member pricing when paid plans begin.
Is my health data private?
Yes. Repbeats limits access to your vitals and workout sessions, and you can export or delete your data anytime in Settings → Data & privacy.