For a long time, if you wanted a turn-by-turn GPS navigation program on your Windows Phone 7, you were stuck with the Telenav GPS app that some carriers such as AT&T, T-Mobile, and Sprint would bundle with the device often for a monthly fee. Now there’s a new program from GPS Tuner called “Turn by Turn Navigation” which should fill the void for those who either had no GPS navigation program at all, or didn’t want to pay the monthly fee to the carrier. Turn by Turn Navigation costs a one time $4.99 and uses Bing for the maps. A free trial version is available, but that is limited to navigation trips only within 12 miles or 20 Km. It supports automatic rout recalculation, voice prompts, favorites, and points-of-interest searches as well as one handed zoom buttons. Overall it’s a little basic, but works quite well provided you have a decent internet connection. To download, search for “Turn by Turn Navigation” in the Windows Phone marketplace.