I bought this app because I was going to be driving around Australia and would be visiting NZ But wouldnt have any data access so I couldnt use Apple or Google maps. The app works pretty well for directions although it can occasionally tell you to turn suddenly. If you have a phone holder or a passenger that doesnt doze off every 3 minutes the display does alleviate this problem.
The POI catalogue is also a bit zany, it didnt have a lot of restaurants but did have some obtuse businesses that I guess someone might care about. This is not so bad if youre going to a known address.
As for routes we compared it with Apple Maps, Google, and a Garmin car GPS a couple of times and the routes it gives are comparable but beware that if you dont have data you get no accounting for traffic. It actually worked better than the Garmin in our friends car when looking for a petrol station on the last day - the other GPS tried to kill the driver by sending them the wrong way down a one way street.
un woz ere about Sygic Australia & New Zealand: GPS Navigation, v15.6.1