Sennadog:
I'm not sure which software you're referring to, but if its Navbox look here:
www.navbox.nl/
I have only used NavBox for Europe (I use Navbox Pro).
Navbox prints the plog in a simple or more complete format, your choice. Also frequencies COM & NAV; RNAV; W&B; Flightplan; etc.
You can pick up previously used routes. In which case it takes two minutes to input new wind information and you have a new plog. A new route takes about half the time (a guesstimate) compared to manual methods, maybe less, for the plog and perhaps only 10-25% of the manual time required to list frequencies needed.
There are lots of features and two versions, one cheaper than the other. Best look at the web site for all the details.
Edited to add:
If it's Flightstar you're interested in look at the Jepp site
www.jeppesen.com