Hi, last test, but the great one!
I have implemented the "DEMO_BANK" on a Flex Mobile Project for iPhone.
It works just great.
Thanks to Serge Jespers for the demo on creating a ios application with Flash Builder.
The only problem is that i still had to use the Datagrid component and Adobe suggests to don't use it for performance reasons.
But performance is just fine on my iPhone 4 (not 4S).
The hard thing is to obtain all the needed certificates from the Apple Developer Portal. But at the end the time to develop this application took me only 10 min!