OP.Sign: Scan Sign Fill PDF Documents is a free app that allows you to manage your electronic documents in a convenient way. You can use it to sign, fill, and scan pdf and docx files. Plus, it features an option where you can ask other persons to sign documents.

With its well-designed interface, this app can improve your business transactions especially if it involves a lot of paperwork. It is perfect for small businesses and freelancers that are frequently signing contracts, filling out forms, and collaborating with others.

The app also encrypts documents, so you can share them without worrying about confidentiality.

There is no need to register to reap the benefits of this app.