Part V. Fitting a Big Idea into a Small Space–Keeping the Feature List Focused, Simple, Refined, and Compelling

If the last section was about excellence in execution, this one is about conceptual excellence—the big idea.

This section features Wooden Labyrinth 3D, a life-like game, and Prowl, a notification utility. It'd be hard to find two apps that begin with such diametrically opposed use-cases. Wooden Labyrinth 3D is a time-sucking game that is hard to beat and even harder to put do wn. Prowl, by contrast, is a set-and-forget Growl utility meant to notify users of their computers' activity without taking up their time.

However, both demonstrate an acute awareness on the part of their developers of the way iPhone users interact with their devices. ...

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