Adobe Scan is also a good scanner app for Android, but be aware that you’ll need to sign in to use it; it would’ve been nicer to use without creating an account or signing in via Google, but ...

Tiny Scanner is one of the better document scanner apps. You’ll find support for most of the standard features. Like most apps, documents are saved in PDF files for future use.

There are free versions of the app for iPhone, iPad, and Android, but the $7.99 upgrade to "Pro" is what really steals the show. 6. Genius Scan ( Android and iOS ) ...