I recall reading too that iOS effectively screenshots the app as you exit it and displays the screenshot while it kicks it back into memory on re-open. It looks

I recall reading too that iOS effectively screenshots the app as you exit it and displays the screenshot while it kicks it back into memory on re-open. It looks like it's loaded instantly but isn't actually interactive until it fully comes back I don't believe this is where I originally read it but does mention it http://www.geek.com/apple/how-ios-tricks-you-into-thinking-it-is-fast-1493037/ http://www.geek.com/apple/how-ios-tricks-you-into-thinking-i...