Wellable will automatically sync data from connected apps and devices no less than once every four hours, but you also have the option to manually sync data. To do this, simply open the Wellable app, drag the screen of the Dashboard page downward, and then release.
You can also manually sync data for a specific app or device on the Connections page, which tends to be quicker than syncing data from the Dashboard page since this will prompt the syncing of data from all apps/devices connected to your Wellable Account.