Its popularity is certainly a comment on the problems with overly JavaScript heavy web apps.
Apollo’s biggest weakness is notifications. They don’t appear as quickly as they should and, for me, chat notifications don’t come through at all. I don’t prefer chat, but I’ve noticed an increasing number of users will open a chat with you instead of messaging you now.
It also doesn’t support having multiple “tabs” open at once, although you can sort of hack it by using the main tab and the search tab. Hoping multiple tabs come to the eventual iPad-optimized release.
But again, great app. Possibly too great for people with limited self-control!