Blue Tags has TinyScan Pro (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for FREE (regularly $2.99) for a limited time.

TinyScan can turns your iPhone into a mini scanner for documents, photos, receipts and other texts. With TinyScan, you can scan your documents at anywhere and store or email them as PDF files.

TinyScan is well designed and extremely easy to use. The interface is user friendly. It uses fast algorithms and detects the page frame automatically. It provides 3 modes for different files, color, grayscale, black & white. And each mode shows a perfect contrast.