Activity depth
Maps, power, heart rate, pace, and cardiac drift on every session.
Fitness intelligence
Know your engine.
Not just your miles.
Upload FIT files. Get TSS, form, Fitness Delta %, and Engine Score — deterministic metrics, no guesswork.
Fitness Delta %
See matched-effort improvements — how much fitter you are at the same work.
Engine Score
Cross-sport 0–1000 score so swimmers and cyclists compare fairly.