A coach that runs with you.

Every run, mapped and measured

A running tracker that watches your route, your pace, and your form — not just your time.

Start an outdoor run and Reps records a live route map as you go, breaking the effort into mile or km splits so you can see exactly where you sped up and where you faded. It also captures ground contact time — the kind of form detail most running apps leave out — so the picture after a run is about how you ran, not only how far. Before you head out, Reps checks the weather, so you dress for the conditions instead of guessing at the door.

The standout is heart-rate-gated intervals. On a run/walk workout, the walk break doesn't end on a fixed clock — Reps waits for your heart rate to settle before it sends you back into the next running segment. The effort stays where you meant it to be, whether you're building base miles or coming back from a layoff.

Knows when to push — and when to hold back

A good running coach doesn't just count miles; it knows when a hard session helps and when it costs you. Reps reads your recovery from Apple Watch and turns it into a readiness score, an energy budget, and recovery signals. On a strong morning it nudges you to push; on a drained one it tells you to protect the streak and back off, so training adds up over weeks instead of burning out in a week. Rex, the AI coach, reasons over all of it — on-device where supported — so the guidance fits how you're actually recovering, not a generic plan.