How to add in iphone controls?

On my macbook I have a spaceship flying through an asteroid field using thirdpersoncontroller and hitting the arrow keys on the keyboard.

Game also runs on my Touch (see ship and asteroids) but I can't move, of course.

Would like some info on the next steps to integrate iphone tilt and screen touch / tap control.

Is there a script for this already?

Thanks for any pointers...