CI and iPhone/iTouch/others

[eluser]howman[/eluser]
Hi Everyone,

I'm getting back into web development after a long hiatus. I'm sticking with PHP/mySQL and came across CI. Looks good!

I am planning to build a "to do list" type application. I want it to run in the browser and also run on the iPhone and iTouch and possibly other handheld devices. I understand that on the iPhone/iTouch you can use the built in Safari browser to view the website. However, I want to build an application that runs on the iTouch so that the user can "sync" the data when she is connected to wifi and interact with the data when not connected.

So my question is, how can a CI application integrate with an iPhone/iTouch app so that the data in mySQL can be synced between the two?

Thanks!