there are apps to play directly on your iPad. SwitchPoker.com are browser based real money poker site
you can play on your iPad iPhone or any mobile device. there is an app for android users, can get the play money version on the play store or the real money version on their site.
other pages have mobile versions, like rush poker. terminal poker is like rush and i think most other big sites are releasing mobile versions. Stars/tilt etc.
Ive played both Switch Poker and terminal poker on my iphone, Switch Poker is cash game only and terminal is like rush poker. I prefer switch as i'm not a fan of rush.
I havent tried the stars app yet, I hear its got a lot of functions but you still need to log in on your pc.
My laptop is on the way out, and since i only use it for poker im in 2 minds about buying a new one or getting a tablet
instead. so hopefully more websites will release mobile versions in 2013.