Epson DocumentScan is a free app for Android devices that lets you scan documents directly to your device. The app has a built-in scanner, and supports most of the major formats.

This is a free app, and there are no in-app purchases. You can use the app to scan any document that you want. The app has a built-in scanner, and it will scan all the pages in the document, including the images.

Immediately onto your Android device by scanning papers. The scanned data can be previewed before being sent through email, direct upload to other programs, or to cloud storage services like Box®, DropBox®, Evernote®, Google DriveTM, and Microsoft® OneDrive.