CamScanner Free is a document application developed and updated by IntSig Information Co Ltd. This application lets you take photos of your documents that can be turned into PDF files.
Once you open CamScanner Free, you'll be given the prompt to either use a picture you already have saved or to take a picture right then of the document you want to use. Once you've picked your picture, CamScanner Free will quickly turn your picture into a PDF file in its entirety or a certain region of the picture that you've chosen.
CamScanner Free allows you to change a picture into a PDF for free. You do have some limitations though when you're not paying for CamScanner like a total limit of documents you can scan along with a watermark on each document that can make it look unprofessional.
Overall, CamScanner Free is a very useful application for office workers or people who need to scan documents now and then. You'll just want to understand the limitations between using CamScanner Free and using the regular version of CamScanner.