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.
On supported devices, Apple’s on-device language model turns your latest training snapshot into a short, plain-English explanation of what to do next. Everywhere else, a deterministic local coach does the same job.
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 Apple Foundation Models coach runs on iOS 26 with Apple Intelligence for the on-device coach; a local fallback is used everywhere else. The fallback produces the same style of guidance from the same numbers, so the feature never depends on a remote service.
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.