The app quickly recognizes business cards, receipts and other types of paper you point your iOS camera at. The scans are automatically cropped and enhanced. This works much better when you have the document on a contrasting background. Multiple images are saved and sent as one large PDF.
If you are into LinkedIn, you can scan business cards, add the person as a contact, add photos from LinkedIn and call or email the contact instantly.
Once a document is scanned, you can name it, add it to your Evernote account or send it via Mail, SMS or other methods.
The app is also designed to work with ScanSnap Evernote Edition Scanner.
(Disclaimer – if you click on the Evernote links and join, I get some points.)