Nope, not at all. - NotePad Plus is 100% freeware there are no hidden costs, no catch no nasty hidden charges or surprises the price you see is the price you pay, and that's completely free.
Originally, NotePad Plus was developed for our very own requirements. At this time we have several commercial projects running so we decided to give NotePad Plus a try to the public, and release a beta version the following week.
Remember, we don't sell NotePad Plus, however it accepts voluntary donations from its users, We make money by advertisements that appear now and then on our websites and other awesome projects.