RunSignal records your runs, keeps your heart-rate target in view while you move, and turns your history into practical training context — all on your phone. No account. No health-data server.
Requires iOS 18 or later. Apple Watch optional.
Everything is computed by an on-device analytics engine, so the detail you get back never depends on a connection — or on anyone else holding your data.
A local AI model running entirely on your iPhone turns your latest training snapshot into a short, plain-English explanation of what to do next. Devices that can’t run it get the same guidance from a built-in local coach.
Your workout and recovery inputs are never sent to an external AI service.
There is no RunSignal account and no server holding your health profile. Routes, heart rate, recovery signals, and every derived metric are stored and processed on your device.
Recording, live heart-rate zones, workout history, and core summaries are free. Lifetime Pro is a single, one-time purchase — no subscription.
No. iPhone records route, distance, pace, and splits on its own. A paired Apple Watch adds live heart rate, zones, and heart-rate-based analytics like drift, recovery, and TRIMP load.
The local AI coach requires iOS 26 for the local AI coach; a built-in local coach covers every other device. Both produce the same style of guidance from the same numbers, and neither ever depends on a remote service — the model runs on the phone in your hand.
No. Readiness and training metrics are fitness information derived from your own data. They are not medical advice, diagnosis, or a guarantee of performance — consult a professional for health concerns.
Create an encrypted backup in Settings, move the file yourself, and restore it on the new phone. Nothing is synced through a RunSignal server because there isn’t one.