Here is a table which compares the features between Free and the PRO versions.
Special Features which only comes with our PRO Versions:
BOGO discounts => Click here to know more about BOGO deals
Category Specific Discounts => Examples here
Provide discount for specific User Roles => Examples here
Dependant product based rules => Examples here
Coupon code associated discounts => How to associate coupon code in discounts
Shipping Address based discounts => Examples here
Offer Free Shipping with cart conditions => Here is the guide
Still unclear ?
Please submit a support request. We are always happy to assist you :)