heart rate intraday data

[jini12]

When I call heart rate API like below, the dataset may sometimes be empty(I think it's maybe often).

https://api.fitbit.com/1/user/-/activities/heart/date/2022-06-09/1d/1sec/time/11:32/11:33.json

I thought it was a synchronization problem and check the fitbit app, but the heart rate data is normal.

Can't it be in a short time? or is there minimum time period?

[jini12]

Is it a synchronization problem between the fitbit device and the server?

If it is, how long does it take to synchronize with the server?

Can't I check the heart rate in real time?

[Gondwana · Accepted solution]

You can get the heart rate in real time, but not using the Web API as in your first post. Web API data is only updated when the watch syncs, so can be 20+ minutes behind.

[jini12]

@Gondwana Thank you for answering

then how to get the heart rate in real time? using the Device API?

[Gondwana]

Yes. Device to companion to server.