I've been working on it for a few months now... The product had several iterations, first as a cappuccino app, then as a Mac app, then finally I decided I'd learn more by building an iPad app.
I didn't build a universal app because I didn't have the time to make it. I wanted the experience to be great, and I wanted to ship by December (I was three months late). So I can't comment on how difficult it would be.
I am a core team member for the Cappuccino Framework, so I know Cocoa (on OS X) pretty well... The transition for me wasn't too difficult... I just used the apple documentation.
I've been working on it for a few months now... The product had several iterations, first as a cappuccino app, then as a Mac app, then finally I decided I'd learn more by building an iPad app.
I didn't build a universal app because I didn't have the time to make it. I wanted the experience to be great, and I wanted to ship by December (I was three months late). So I can't comment on how difficult it would be.
I am a core team member for the Cappuccino Framework, so I know Cocoa (on OS X) pretty well... The transition for me wasn't too difficult... I just used the apple documentation.