Mobile entertainment has made a big step forward in the last few years, if just five years ago you could be satisfied with a few less popular games such as Angry Bird, Subway Surfer and a couple of interesting puzzle games, now the list of entertainment apps has grown by several times.
Apple...
I want to say it's one to one, but in all honesty I'm a bit fuzzy there. I can recommend JoyFreak's sister site AdminIntel - Admin & Webmaster Resource where there are lots for people of varying degrees of expertise with development, you likely can get a far more precise answer there!