Square Enix, the company behind Final Fantasy I and Final Fantasy II games has released these games for iPhone and iPod Touch. Both the games are now available to download and buy on the App store, for the price of $8.99 each. Still these are cheaper than the PSP versions, which cost $20 each. The average feedback for these games on the App store is fine with the exception of some bugs in the controls.
These are the links for both the games on the Apple App store: