When there's completely no GPS info, only HR info, the export button to GPX doesn't show up. Even when I enable the toggle "Include GPX/KML entries even when there's no GPS info."
This is suboptimal for indoors training, so I hope this is a helpful first test run. 😁
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Just added - so if you try the development app loader I'd be interested to see how you get on