History

The History tab will show checklists completed by the signed in user. Tapping any checklist will show the completed checklist. Tapping the share button in the top bar will allow you send the completed checklist link as allowed by your mobile device.

See this example video:

Settings

The settings tab will show the logged in user and the app's current version. Settings for app can also be switched as well. 

See related article: Lightning Mode