For iOS, maybe look at ƀread, it's on github at
https://github.com/voisine/breadwalletSince the wallet stays on the phone, I think it's the best choice for bitcoin on iOS currently. Maybe you can make some magic happen and have an easier time with it than Android.
Thanks. It looks interesting. The only issue is that I have no experience with Macs, and XCode (the IDE) requires OSX Server. I've been talking to a few devs about the iOS wallet. There's a few options out there now. I do like the idea of a decentralized wallet though.