Does the author have an iPhone? There already is an App Store Genius. It doesn't work with your ratings AFAIK, nor the number of times you use an app, but it is

Does the author have an iPhone? There already is an App Store Genius. It doesn't work with your ratings AFAIK, nor the number of times you use an app, but it is definitely there. Not trying to bash the guy for writing his thoughts but even he says it is conservative. Extrapolating what the next iPhone will be based on the last 3 is easy to get 90% right, as the author does here. It's that last 10%, the interesting bits, that is difficult to predict.