A free app for Android, by raincontinues.

Unlock PDF: Remove PDF Password is a free app that can remove the password from your PDF files, so you can open them without having to type the password again.

This format is so well-liked that many organizations, including firms and colleges, like adopting it to keep their documents. With the help of this app, you can quickly and easily change an encrypted PDF file into one that can be changed, copied, and read by anybody without a password.

How does it work?

To get rid of the password, you just have to select your PDF file in the app, press the “Unlock” button, and you will be able to open it without having to type the password.