Transfercoin has quite a good android wallet which looks just like the QT app, is that something that could be done with the Crave codebase or does it need a whole lot of work?  It could also be too heavy as is with a full blockchain DB. 

PIVX has just launched their android wallet and that's quite nice, it uses a new version of their masternode code to create a trusted node that the mobile wallet connects to and that makes it fast to load and easy to use.