Flat is poor design, the fad of the moment, and will hopefully be gone in short order. If anything, Flat as a design trend is elitist: it creates "secret knowledge" of how to operate a visually unhelpful interface, enabling "those who know" to help those confused by fucking awful design.
Great article, though mis-titled.<p>A more appropriate title might be something like, "iOS vs Android native app design, similarities & differences".
This failed to go beyond Flat UI concepts, it merely compared iOS and Android guidelines. It's more of a "contemporary Flat UI design".<p>When viewed that way, it actually is a good article.
If you're going to discuss flat UI and compare the major platforms, omitting WP8 is absurd. WP7 jumped straight into the deep end of modern flat design, and WP8 continued the trend - some of the new iOS screens look like palette-swaps of Windows Phone.
Good comparison, but I found the point about the back button being needless and confusing a bit weird. Using Android as my primary mobile OS, I feel like someone's cut off a thumb whenever I use iOS devices. The back button, to me, is fairly critical.
<i>Skeuomorphism used to be a huge red line that divided iOS and Android design</i><p>Not true. The original Android design was not flat. It's WP7 that introduced flat design; and Android basically copied it.
This site went out of its way to give me a bad experience on mobile (bad enough that I didn't finish reading the article): the page I received on Android/Chrome was so narrow that I couldn't unzoom enough to fit what I consider a reasonable amount of text on the screen.
Minor point. I think the article is incorrect regarding long press being absent on iOS. I think it's been available for some time as UILongPressGestureRecognizer.