Does the app respect user privacy? Is it just a bluetooth remote control or is there a web service connected to it?
The remote controller is just radio, not Bluetooth. But inside the board there is also a Bluetooth module that connects just to a smartphone app. Data remains in the app.
You can then decide to upload it to a web service in case you want to see the data on an interactive map or you want to share it.
Anyway, it's just riding data, it's not associated with any of your personal information.