PDFView is a free software developed by Acadoid Developer and based on the MuPDF library. It is licensed under the GNU Affero General Public License and can be redistributed or modified. PDFView is not a PDF viewer that displays PDF files with a graphical user interface, but instead, it provides a PDF rendering service to other apps via a documented interface.

PDFView is designed to work with Android 3.0 or later and is a great option for developers who want to include a PDF rendering interface in their apps. It requires minimal permissions and no internet connection, which means that users' privacy is respected.