Online refresh
How often the data refreshes while a device is online is controlled by the Online Cache setting. The app uses the cached data and dashboards rather than rerunning the queries every time there is a user interaction.
The setting default value is 5 minutes, meaning that the app will refresh every 5 minutes. This is a good setting for obtaining up-to-date data, however if your dashboards does not update that frequently your users can increase the setting to better fit their needs. Refreshing less frequently can improve performance for larger collections.