Of course Sygic is not free. You can of course discuss the way of marketing. Ultimately, however, is the price of the eurocards OK, especially a lot cheaper than Navigon or TomTom. I have tried many Navis and for the price of Sygic I am more than satisfied. I use Sygic now for two years on different devices. It has remained never crashed or hung. The route calculations and suggested routes are in most cases also in top working condition, only in which one or other development area there were times short "confusion". I find the maps / presentation personally very clear, easy to read and modern. However, that is of course a matter of taste.
Clearly to Share a cheaper alternative for TomTom or Navigon from me.