Fantastic if organizers put in the effort

I have only used the app for one event. I guess its usefulness would depend on how well organizers provided details and updates, but my event had the schedule implemented perfectly and I loved it.

I was a little surprised it drew 7.5MB of data over three days. I had already downloaded the schedule ahead of my event, but I allowed it to use data so I could be sure to get all the updates to the schedule. I did reference the app often to figure out what I wanted to do next, and it would always tell me if anything had changed, which was amazing (our convention had a few cancellations last minute). But the changes I got seemed like they could be done by syncing text only so Im not sure what the big data-draw was. Thats the only reason for 4 stars instead of 5.

237millilitres about Guidebook, v3.5.13