As mentioned in the previous item, event planning apps for iPhone can be used offline and acts as a portal to your event. Through the app, your attendees will have access to important event information such as the venue, speakers, sponsors, and even the attendee guest list. Why would you want to let your attendees know who are coming to your event? It acts as a reinforcement for them to know who they can network with during your event. It’s also re-assuring that they are going to an event where they may know some people.