iOS 9

I don’t have anything to add, really, to iOS 9, but I do like the way you can now quickly skim through your pictures in Photos. If you’re zoomed in on a picture the bottom bar acts like a quick scrubber (left on my illustration). It’s got a coverflow-like effect, you also can add motion to it, and the top will very quickly keep up with the pace. Also, when you want to insert a media item in Messages you’ll immediately get to pick the latest images (right in the middle).