A free app for Android, by Team Unfollow.

Doc Scanner is a free document scanner app for Android phones. It lets you scan any document, photo, or paper into PDF format. You can also crop the image to remove unwanted spaces. You can save your scans as PDF files and share them with others. The app is designed to be easy to use and has a simple interface.

Doc Scanner works with the phone’s camera. If you want to scan multiple pages, you can add more than one image and adjust the page order.