We're working on a Chat app hooked up to a custom API on AWS. It's fairly built out, just working on getting it perfect on iOS. It's a very consumer focused, beautifully designed, app. It's probably 90% there, it works pretty well... we just want to add a few more features to it, and take out some of it's jerkiness. It's probably got the hardest part ahead of itself to get it great.
We currently have one full time iOS (senior) and one Web guy who also manages the AWS. So we'll be able to help out on-boarding into this project, and helping along the way.
The other developer works on our other huge part of the app, but they don't commingle on storyboard or anything :)
Services we use:
Pusher - for parts of the real time chat stuf