10 Upvotes
Spark for Android The much beloved email client now on Android
Scanner Pro 7 Probably the best way to scan papers
Spark by Readdle Fast, smart and beautiful email client for iOS
PDF Expert for Mac The best PDF viewer, editor, and form filler available.
Scanner Pro 6 Turn your iPhone or iPad into a portable scanner
Spark A smart, fast and free email client for iPhone
PDF Office by Readdle Create, Edit any PDF from your iPad
Scanner Pro by Readdle A scanner in your pocket
Documents 5 A document viewer and media player.