yes its for mobile items on the go it works with the 3ds,iphones, and anyother device that can be handheld....i would expect your ipad though would work with xat mobile...the one in my sig is for computers....
so if your doing pc then you don't need to be signed in but i highly suggest you do though so your name will be remembered click on my sig link if your using a pc...the ipad though should be xat mobile...
In response to your thread, EV's are also transfered via Exp. Share. However, they're not halfed like Exp. Points. Both Pokemons gain the total ammount of EV points.
its right next to the envlope tab and next to that is the other thing and then next to that the image button thing you use to put pictures in your sig...