For a good chunk of this week, the most popular free iPhone app in the world has been Flying Cyrus – a cheap’n’nasty clone of recent mobile gaming craze Flappy Bird using the face (and tongue) of Miley Cyrus. Entirely unlicensed, the game raced to more than 1m downloads on Apple’s App Store, with its Israel-based developer proudly showing off screenshots of his iTunes Connect account displaying 644k downloads in a single day. “Marketing? Not one dollar invested in marketing,” he told local tech site Geektime. There are in-game banner ads, so money is being made, which we suspect will spark attention from Cyrus’ legal team sooner rather than later. In contrast, Fall Out Boy launched their own Flappy Bird-a-like game within days of the original going viral on the app stores.