An open cycling and studio training app for iPhone.

RideHC records every sensor you connect — trainer, power meter, heart rate, cadence, speed, core temperature, muscle oxygen — runs structured workouts in ERG or by target, and writes standard FIT and CSV files you can take anywhere. It works on a smart trainer, on rollers, and on a studio bike at the gym.

What it stands for

Your data is yours. Rides live on your phone. Export is free in every version, permanently, and nothing is uploaded unless you share a file or send a ride yourself.
Record everything, display some of it. Every connected stream is stored with its source, units and quality flags, even when there is no screen for it yet.
Honest numbers. A sensor dropout is a gap in the file, never a stale value filled in.
No account, no tracking. If you train with a coach on Grepiac, you can connect it and send a finished ride there with one tap; nothing else in the app uses the internet.

Where it is

RideHC 1.0 is being prepared for the App Store. It needs an iPhone running iOS 17 or later and Bluetooth sensors: a smart trainer or power meter, and a heart-rate strap or a watch that broadcasts heart rate.

Group sessions for coaches and clubs come in a later version.