Very snappy on an iPhone 4s in app browser.<p>Nice animations that aren't overdone, my scroll history is remembered, no scroll jank, no touch latency. Kudos.<p>Wish more spas worked this well on mobile.<p>Edit: there's occasionally a <i>touch</i> of repositioning when opening up the homepage again. The Israeli article headline is stuck at the top of the page behind the header for a half a second or so then quickly gets set into place. Definitely still a web app, but it's better than most