[phendrenad2]

I've noticed this too, and my guess is they're doing animations on the CPU.

[FormFollowsFunc]

They’re doing them on the GPU using Core Animation framework. The iPhone has used the GPU for smooth animations since the start while GPU usage on Android depends on whether the device has one.

[phendrenad2]

I think that Android is doing some UI on the CPU, even if it has a GPU.