Hi Hallie!
I only have one client that is utilizing branded apps right now, but the advice I received is to request a resubmission two weeks before the actual event so that you have an update right before the event starts. If you have a longer gap between when you release the app to the attendees and the event start date, I would schedule for two weeks before the app release.
Beyond that, it probably isn't necessary for other updates. However, at my previous gig, we released six weeks before the event because our attendees utilized the discussion boards a lot pre-event, so I probably would have done it before the release and again before the event.
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Tori Martinez, Cvent Certified
Event Technology Specialist
Direct Travel
United States
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