AnyScanner is a free application that allows you to scan and view documents on your mobile phone. This application is compatible with Android. It can scan and view many different types of documents such as paper notes, receipts, books, whiteboard discussions, business cards, certificates, power points, and even receipts. 

This application uses the camera of your phone to capture the image of the document that you want to scan. It can then convert the image into a PDF file. This application has a built-in OCR technology that can recognize text in the image and convert it into a human-readable form. It can also crop the image and reduce the file size.

If you want to send the PDF file to someone else, you can do it via e-mail or any other supported messaging app.