The following features are included in every mobile app:

Social Timeline; Attendee Profiles; Notetaking; Session & Exhibitor Resources; Exhibit Floor Plans; Gamification Options; Group Chat Messaging; Session Polling; Custom Itinerary-Building; Private Messaging; Push Notifications; QR Code Scanner Built-In; Real-Time Event Analytics; Schedules; Speakers; Sponsor Ads; Sponsors & Exhibitors; Streaming and Video Support; Virtual Experience; and Web Links

And last but not least, a dedicated Project Manager that will setup your app and provide training to you and your staff.