A free program for Android, by Apero Technologies Group – TrustedApp.
With the Document Scan: PDF scanner app, you can turn your phone into a powerful, portable document scanner application, complete with OCR text recognition capabilities. You can also import photos from your device and use them to scan documents.
The app is designed to save the information into a PDF file, which can be used to make a backup copy or for sharing with other people. It also supports several other formats, including JPG and GIF.
You can use the app to scan and save PDFs from your device’s camera or photo library, as well as from photos you’ve taken with the app.
The Document Scan: PDF scanner app is compatible with all Android devices that use the Android operating system. You can also download it for free on Google Play.