My understanding of the export function is:
You can only export tcx and gpx files if the file you sent to Bkool already contained route data. In other words, you must have ridden outside while using a Garmin or other GPS tracking device. I assume that the Bkool app has an automatic upload. If you use another device, you need to send the file to Bkool using the "import sessions" button in the menu.
The route data supplied by Bkool for video or Google Earth rides is never part of the export file, and so only works within the Bkool site.
If you ride on the Bkool trainer, the file will include speed, cadence and power data generated by the Bkool software.
If you have a bike computer which records speed and/or cadence and is Ant+ compatible, you can choose to use this data instead of Bkool's by pairing the appropriate sensor when setting up the configuration in BSim.
If you wear an Ant+ compatible heart rate monitor and pair the sensor, the data file will include that as well.
You can export all this data as an hrm or a fit file (if you used a heart rate monitor) or as a fit file (if you didn't).
If you have a power meter, Bkool cannot read the data from it and will always use it's own generated power figures.
As @harly and @Simon Schultz rode indoors and without a heart rate monitor, only the fit file export option is available to them.
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