There may be more than 20,000 iPhone apps out there that have been downloaded more than 500 million times, but what is the average shelf life of each app? Greg Yardley, CEO of Pinch Media, offers some stats based on the 30 million+ downloads his iPhone app analytics startup has kept tabs on. One of the most telling slides in a recent presentation he gave shows the drop-off rate in iPhone app usage (see above; entire slide presentation embedded below). For free applications, only about 20 percent of users return to use the app the first day after they download it, and then it quickly drops off from there. By 30 days out, less than 5 percent are using the app. The chart for paid apps shows a slightly steeper fall-off rate. So there is a very brief window of time to capture people’s attention and potential revenues.
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