ios - AutoLayout for only iPad application -

i start application need support ipad devices. now, question need use autolayout functionality?

what thinking app supports ipad,no need use autolayout because ipad devices uses same size classes.

correct me if wrong.

you have use size classes if using ipad device target application. there reasons why have use size classes :

1) ipad have diff screen sized , resolutions well. check them out here.

2) ipad multitasking feature there ios 9 need resize views according , need size classes check out here.

note : if using autolayout no need use size classes size classes important you can check importance of size classes , working in apple's design guide line (here)