Sync and Data Management
The Data Management page shows counts for the number of Form Templates, My Forms (the forms related to your ID), All Forms, Launchpads, Photos and unsynced Forms and Photos on the device. It can be accessed from the side menu which you can open by clicking the hamburger menu in the upper-right corner of the app.
If a user is creating or editing forms offline, the data collected will automatically sync once connectivity is re-established, assuming the app is not in offline mode. If you need to force a sync for any reason, click on the sync icon in the upper-right corner of the app, or on the Sync button on the Data Management page.
Prior to any offline work with Salesforce Objects, ensure to Prep for Offline before going into offline mode.