The Available Missions list in the mobile app works like the Available Missions list on the website. You can view the mission with all its legs to get the full picture of the flight.
You can also filter the list:
By location, which means by airport (either the origin or the destination). You can search for airport using the identifier, or the name or city of the airport. Tap the airport in the search results to set the filter criterion.
By date. Choose a date and the list will show all missions on that day or after.
Be sure to tap the Search button after adding your filter criteria to see the filtered results.