Is the app developer the same as for the past two years? Two years ago in Denver, the app continuously crashed my Samsung Galaxy S8 phone and corrupted two sd cards containing hundreds of photos when I tried to post photos through the app. I then tried to access it via my Galaxy Tablet and it also kept crashing. Last year in Dallas, the app again continuously crashed the same phone, at one point sending it into a 5-minute reboot spiral that overheated my battery until I was finally able to beat the app to the punch and shut it down before it rebooted yet again. That was a huge exercise in frustration and time-wasting (both trying to stop it from rebooting and then trying to figure out which sessions I'd been planning to attend), and the tech support desk was unable to help me either year. Feedback in the Google Play store went unanswered and there were users of the app - at other conferences - who'd posted similar complaints. Just a warning about the stability of the app. It's a great app when it works and some, perhaps many, people had no problems at all with it. Since it crashed both my phone and my tablet, both of which were recent or fairly recent models with latest OS and plenty of system resources available, I'll stick with the web version and a notebook this year, even though that means I can't store my agenda or participate in the app's social aspect.
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