Polar FlowSync is currently not compatible with macOS Big Sur
The Polar FlowSync data transfer software is currently not compatible with macOS Big Sur. This means that you cannot install FlowSync or synchronize your Polar product on a Mac running Big Sur. We are working on a Big Sur-compatible version at full steam and hope to release it soon. Big Sur brings with it some major changes, which is why we need to make some significant under-the-hood adjustments to FlowSync. Before a Big Sur-compatible FlowSync version is available, you can synchronize your Polar product using the Polar Flow app on your iOS or Android mobile device.