Introduction

What makes a five-star app? A program has to be interesting, even if the task it’s performing is routine. When you look at a dozen apps that have the same informational, utilitarian, or entertainment goal, five-star apps have that extra something special that floats to the top.

In reading thousands of recommendations, testing hundreds of apps, and then choosing the set that appears in this book, I found that the best apps were ones that surprised me and charmed me, even for ordinary tasks.

A good example is Ocarina, an early iPhone app that continues to be a bestseller more than two years after the introduction of the App Store.

Anyone could have come up with a pedestrian ocarina program, in which you blow into the microphone to ...

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