It works surprisingly well - worth more than the price!
I was skeptical, especially since I have a 3GS with the less-than-magical camera that iPhone 4 owners enjoy. But I scanned a printout of a 3-paragraph PowerPoint slide WITH ZERO ERRORS on my first try -- and I havent looked back since!
A bonus use of this excellent app is to "scrape" content off a website or application that doesnt let you copy and paste. Just point your iPhone at the monitor, click, and send the contents to e-mail in seconds!
Babylon1957 about
Perfect OCR