"MapQuest 4 for iPhone" is a free app that brings turn-by-turn navigation by voice to the iPhone. The Android smartphone has long had such capabilities and the iPhone is now officially in the voice GPS navigation game.
It is "basic voice guidance" only, Mashable notes, so while it tells you when to make turns and lets you know if you're off route, it won't pronounce every street name.
But it's a start, and again it is free to download.
MapQuest released its first iPhone App in June 2009 with extremely basic features to compete with the default Google Maps app on the iPhone.
