MotionX-GPS Drive for iPhone
Thursday, February 11, 2010 at 12:05PM 
MotionX-GPS Drive is an excellent navigation app on the iPhone. If you have a 3G or 3GS iPhone, this app provides turn-by-turn directions with VOICE, for both driving and walking. The application itself is just $0.99. You get the first 30 days of Voice navigation for FREE. At which point you can opt to purchase the Voice capability for $25.00 per year, or $3.00 per month.
The application remains functional after the 30 days. However, if you spring for the Voice add-on, you also get features like audio prompts, 3D maps, auto re-routing if you miss a turn, and the ability to take traffic conditions into account when calculating routes. MotionX, integrates nicely with the ipod and phone functions, for a seamless transition between calls, audio, and GPS navigation. I've been using it for a while now both locally and traveling around the US, with great success. For the initial cost of entry, I find this to be the best bang for your buck with very accurate performance. Check out the video below for a demo.
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