model. You can use every single feature without paying a dime or entering a key. The only "catch" is a trial prompt that occasionally appears asking if you'd like to support the developers. How to use Prepros without a key: Download & Install : Grab the installer directly from the Official Prepros Site Ignore the Prompt
Historically, Prepros operated on a freemium model. The free version worked perfectly but displayed a small "Unregistered" watermark overlaying your live preview or generated CSS files. The (requiring a valid license key) removed these limitations.