What it does
Polar Flow is Polar's free online service for planning and reviewing training, activity and sleep. The official setup route connects a Polar device with the service before using its recorded information.
For a new Polar device, begin with the setup address given on the official page. That is a more useful first task than looking for a training chart before the device is connected. Flow then serves as the place to follow the training and activity information associated with that setup.
The service is described as free, while the hardware is a separate consideration. Its web application requires JavaScript. Someone choosing an activity platform from scratch should note the Polar-device focus; someone already using Polar hardware can begin by connecting it and reviewing the records it provides.
Strengths
- Training, activity and sleep are brought into the same follow-up service.
- The official page provides a direct device-setup route.
Watch out for
- The documented setup is centered on Polar hardware.
Best for
- Polar users organizing recorded activity and training.
Sources
- Polar Flow (Oct 26, 2026)