Apple iTunes has Free iTunes Business App: WorldScan - Scan Documents & Share PDF - iPad, iPhone, iPod. (normally $2.99)

WorldScan can scan documents and convert them into PDF format, save them or send them by Email, Wi-Fi or Dropbox.

4.5 out of 5 star rating in iTunes app store.

For iPhone/iPod Version, click Shop Now.

iPad HD Version

- normally $3.99

Requirements

• Compatible with iPhone 3GS, iPhone 4(S), iPhone 5, iPod touch (3rd -5th generation) and iPad.
• Requires iOS 4.3 or later.
• This app is optimized for iPhone 5.