Spring $ 5 for the Prime version and you can customize gestures, unlock
extra scroll effects, and more, but the free version should be enough for most people to create the precise look and feel they're craving.
With the downloadable PDF, you get full ownership of the file, but the comics experience is incomplete because you are simply
scrolling through a set of pages — it's like reading a print comic that has been scanned in, only a little clumsier because the digital
effects require
extra pages.