Set the target.
Choose the heart-rate target you want to hold for today’s ride.
In Zone. On Purpose.
Twenty minutes in, easy drifts to tempo, and the 80% that builds your base quietly stops happening. HOLDR watches your heart rate and backs the resistance off the moment you leave the zone, no matter what your ego says.
Meet HOLDREasy is a discipline
Hard enough to wear you down, easy enough to prove nothing. Easy days are where ego pace does its damage.
A real ride in HOLDR
Your heart rate rises. HOLDR backs the resistance off before you get the chance to argue.

A closed loop, without the fuss
Set your Target Heart Rate and pedal. When your heart rate rises, the trainer eases. When it falls, resistance builds.
Choose the heart-rate target you want to hold for today’s ride.
As your heart rate changes, HOLDR makes measured resistance adjustments through your smart trainer.
The goal is not a perfect line. It is a ride that settles into the work you intended to do.
A room with fewer variables
Easy is not wasted time. It is the 80% that makes the other 20% possible. HOLDR helps keep it where you planned it.
In zone. On purpose.
Your plan says easy. HOLDR sides with the plan.
Screened TestFlight betaApplications are reviewed individually, and applying does not guarantee access.
EquipmentYou need an iPhone, a heart-rate source, and a compatible FTMS smart trainer or smart bike.
Ride commitmentPlan to complete at least three rides of 30 minutes or longer within 30 days and report what worked or failed.
Required ride sharingBeta rides share eligible heart rate, power, cadence, and app settings under a random identifier.
The application opens in Google Forms. Review the privacy policy before applying.