I havent found anything wrong with this app: it provides good directions with average graphics. The POI data base seems complete as well. However, for trip planning purposes it has limitations that reduce its value. You are limited to including only 5 waypoints for a planned trip and there is no convenient way to import a route from another gps application (even in TT format). For the price I would expect to see those features included.
Oldlodo about TomTom Southern Africa, v1.8