Found this to be invaluable throughout the conference.
It won't let me open handouts or slides. I like using it to develop a schedule for the conference.
Liked being able to create my personal schedule and have it so easily available to me. Also loved that the location location of each session was right there with the event on my schedule.
Helpful for viewing schedule and calendar reminders. I had problems getting some handouts . Difficulty with rating some sessions with multiple presenters (team based learning)