I attended the symposium in person as an affiliate, IT “owner” of our breast imaging software and workflows.
As an IT person, I have been extremely impressed with the app, overall. The notifications were not too numerous nor annoying, the app is very user-friendly with little lag, and it gives you access to nearly everything you need.
I most especially appreciated the ability to favourite sessions and see my personal schedule separately from the full schedule, view slides if the presenter provided them (it was difficult to see some screens due to ambient light), and take notes directly with the slides/session in my schedule.
The only issue I found:
When zooming in on a slide, once I zoomed out, I could not swipe to the next or previous slides; I had to tap the arrows. Not a huge deal by any means.
Thanks for a great app!