The tabs marked on the image on the left hand side are synchronised between the "My events" and the app. If those tabs have content in them, then the tab in the app would automatically display that content.
On the app you would be able to set a speaker, sponsor, etc, as a favourite, share the link or even evaluate them! Like on the website, you can send a private message to an attendee. The sessions you favourite would appear on "your schedule" a tab in the app.
For evaluating the Speakers and Sessions, you can use the basic 5 stars ranking, or create a specific survey:
You can also create additional pages/tabs specifically for the app and see a preview before saving.