Double PDF at Mac App Store analyse

Double PDF
--Lightweight and Tiny PDF Browsing and checking tool

Browse two PDF documents and check the difference

Double PDF is an useful tool to browse versions of your
PDF eBooks (with Many many pages)
PDFs made by Keynote or other office applications

KEY FEATURES
Flip two PDFs in one action (forward/backward)
Find difference with two PDFs (String compare -> Rendered Image Compare)
Browse difference by image (blink each pages preview image)

OPTION FEATURES
Browse text differences by BBEdit or Text Wrangler, the most famous text editors in the world

Interface Languages
English, Japanese, Chinese(Simplified, Traditional), French, German, Spanish, Portuguese, Korean, Italian, Russian, Dutch, Swedish, Turkish, Danish, Vietonamese, Norwegian, Polish, Finnish, Indonesian, Greek, Romanian, Hungarian, Czech, Catalan, Slovak, Ukranian, Croatian, Malay, Hindi, Thai

REQUIREMENTS
PDFs must not be encrypted