It would be easy to sneak into the iOS world (without jailbreak requirement!).
Look here, let's get inspired:
http://gba4iosapp.com/download/

The steps are:
-> found a small company (cost around 2-3 BTC depend on origin country)
-> apply for Apple iOS Enterprise Programm (299$ = 0.5BTC)
-> create iOS wallet app (this might be difficult)
-> sign the app with your enterprise provisioning file
-> provide a custom download page: http://gba4iosapp.com/download/
-> apple then probably then revoke your certificate
-> tell users to set back the date during the download/install of the app