Comment on wunderlist

I also had the same strange behavior. That's why I trashed wunderlist and all associated files.
It's a pity because the iPhone sync was just great.
And I don't believe that the time it takes to quit has got to do with sync. There's a "Sync" button in the app and, when you click it, it takes about one second to sync all tasks with the server. So, those ten seconds are a little bit suspicious. Let's hope it's just a bug.
Version 1.1.1 has been released more than one month ago. That's more than enough time for the deveopers to correct it.
I've moved to iProcrastinate, that syncs with the iPhone through my local WiFi. No need for remote servers.