When Apple said the iPhone 3G would include a GPS (Global Positioning System) receiver, everyone immediately assumed we’d get turn-by-turn direction software, too. Not quite. It took a while for Apple to make the iPhone OS mature enough to support turn-by-turn apps with the release of iPhone OS 3, and for developers to start taking full advantage.
But since the release of iPhone OS 3, we’ve been inundated with turn-by-turn GPS apps and several waves of updates to those apps. Here’s a review of nine GPS navigation applications that are worth a look.
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