The Pro feature set can be unlocked with an in-app purchase of $4.99. Along with a number of new features in the update, pro users can take advantage of text recognition support in more than 60 languages, colorful themes, smart file naming, document editing, and more.
Just last month, our own Joe White pitted Scanbot against PDFpen Scan+ in an AppAdvice App Smackdown. You can read more about Scanbot and find out what app took home the title in the head-to-head battle.
Ive tried out a number of similar apps, but Ive always returned back to Scanbot. The quick scanning capability, integration with a number of cloud services, and 200 dpi and higher scan quality makes it a winner.