A free app for Android, by Taymay.io.

All Document Viewer and Reader (ADV) is an application that allows you to view all the files on your phone. With this, you can easily browse through the folders and files and open them in the app.

The application supports many formats and you can open and view the documents in the following formats: PDF, MS Word, Excel, PowerPoint, JPG, BMP, TIFF, GIF, PNG, EPUB, MOBI, ODP, PDF, etc.

With ADV, you can sort your files easily into different categories. You can also view them in various modes as needed. It also enables you to look for a specific file by name or format.

This simple tool will make managing files on your Android device more convenient.