The demo version is completely identical to the commercial version as far as interface is concerned. You are welcome to use it to make yourself more familiar with the product. The following differences and limitations apply:
No online updates for vulnerabilities database
No potentially unsafe checks for DoS-vulnerabilities
Many tests utilizing original heuristic mechanisms are not included
Scheduler interface is fully functional, but created schedules are not saved
Reports generated contain only a resume of actual scan; body of the report contains only an excerpt of standard report for demonstration purposes
Scan history is accessible only for viewing; old results cannot be used in subsequent operations