The Simplest Android App for Scanning Documents

WIRED 

Most scanning apps try to get you to buy a cloud storage subscription or pay for extras. Not FairScan, which is free and open-source, and has some powerful features. If you're interested in going paperless, you probably think you need a scanner. It's true that hardware scanners make turning multipage documents into PDFs very simple. But most of us don't have easy access to a scanner.