If you’re wondering how often my Fitbit stats update on the site, the answer is: Whenever they update.
I know, probably not the answer you were looking for…
Here’s a more detailed explanation of how the stats work: The stats themselves are actually collected by my Fitbit. From there, they sync to the app on my phone via Bluetooth, at varying intervals (and assuming I am physically near my phone for them to sync.) Once the information syncs to the Fitbit app, it’ll be uploaded to the Fitbit servers. At that point, the information is available for my website to pull down and display to you.
So, it’s not up-to-the-minute, but it should be fairly reasonably recent.