Opensource tools for Polar Watch (M430 etc...) Downloading without Polar Flow Downloading: USB Downloader: https://github.com/douglase/v800_downloader QT: https://www.qt.io/download/?hsLang=en Bipolar: https://github.com/pcolby/bipolar Viewing: gpxsee: http://www.gpxsee.org/index.html#download parsers: gpx-py: https://github.com/tkrajina/gpxpy