Android application for all documents reader

I am looking for an experienced Android developer to create an application that can read various types of documents such as PPT, PDF, Excel, Word, and TXT files. The application should be user-friendly and able to handle different file formats effortlessly.

Specific features required for the application include:

- PDF reader functionality
- Word document reader
- Excel spreadsheet reader

Design and layout:
Although I do not have a specific design in mind, I have a rough idea of how I want the application to look. The developer should be able to work with my ideas and provide suggestions for a visually appealing and intuitive design.

Target audience:
The target audience for the application is the general public. Therefore, the design should be accessible and easy to use for people of all backgrounds and technical knowledge.

Ideal skills and experience:

- Strong experience in Android app development
- Knowledge of document reading functionality and libraries
- Ability to create a visually appealing and user-friendly design
- Familiarity with different file formats and how to handle them in an Android application

If you have the skills and experience required for this project, please submit your proposal with examples of your previous work in Android app development.