So far so good, but

This is the only navigation for the iPhone which also can work in Thailand.
4 Stars because there is no other solution available.
...But compared to a Garmin it has less POI and not everything is up todate.
Furthermore is to mention that the software has a weak route calculation algorythem which bring you always on "the long way to home".
Nevertheless there is nothing else availabe so far.

jbirke about Sygic Southeast Asia