sdk apps for luxe, charge 5?

[danbro]

I am interested in writing a device and companion app for the luxe and charge 5.  Is this possible?  If not, then I am really interested in accessing the current hr value in the fitbit mobile app from an sdk companion app.  Is there an api, or a class I can instantiate that will hand me that data?  If I can get that, then I do not need to create a device app.

[Gondwana]

The device and companion APIs only exist on Fitbit OS watches (Versa* and Sense*). For Luxe and Charge, you'd need to use the Web API. However, that is only updated whenever the watch syncs.

[danbro]

ok so I see the FitbitMobile app receiving the hr bpm from the Luxe every second.  I would assume then that the FitbitMobile app is acting as a companion app to the program running on the Luxe that is emitting (transfer_file?) the hr value every second.  Is there a way  I can install a companion app in the FitbitMobile app that is able to view that emitted hr value?  Like listen for a file_transfer event, a websocket event?  I would assume that is the type of communication the Luxe does back to the FitbitMobile app to emit hr values.

[Gondwana]

Sorry, no, the Fitbit mobile app doesn't provide any hooks for third-party code, other than hosting companion code for Fitbit OS watches.