xGPS rocks! The newest beta 1.2 of xGPS uses Google’s map data and adds it’s own navigation readout and a voice engine. This app has the ability to download map ahead of time and also supporting several external GPS modules so that the original iPhone and iPod Touch users can also enjoy this cool experience.
The voice navigation is great. The voice engine is pretty accurate and although it has some issues with a few words and abbreviations for the most part the voice directions are clear and easily understandable. It also will provide voice directions while music is playing though for me this feature needs to ability to mute the music while giving directions before it will be practical – I just couldn’t understand the directions while music was playing.
xGPS is now available in Cydia. Seems this application tempted us to have a jailbroken iPhone, right? :-)