Thank you for your interest in our software!
Lite is the most basic license. We are now reviewing differences between Lite and Personal licenses, so these will be different in the next version.
Pro - this license gives access to all features, and besides provides licenses for two computers.
Portable - this gives additional license to be used from your USB/Flash drive.
All the prices are available from our site:
http://plagiarism-detector.com/plagiarism-detector-buy-now.phpFeel free to ask any additional questions.