One year ago today Navigon’s Mobile Navigator debuted on the App Store. It’s arguably the best turn by turn guidance app available and the one that I consistently recommend. And it’s even easier to recommend it when they do something awesome like slash their prices by half across the board. That’s right, you can get any of Navigon’s Mobile Navigator apps or add-ins half off until August 15th.

GPS apps have been around long enough for the iPhone that they’ve become pretty commonplace. They’re no longer sold (or bought) simply because they are the only ones available, so new features are what keeps the sales coming. Navigon’s newest feature is another first for navigation apps on the App Store: live traffic data.