Tetra4D Reader is a productivity application designed for Android devices that allows users to view and interact with 3D PDF documents seamlessly. It supports documents created by Tetra4D Enrich and Automate, enabling users to navigate through multiple pages and 3D annotations effectively. The app features interactive widgets such as carousels and lists, enhancing the user experience by providing easy access to different views and parts within the documents. Users can also engage in standard 3D functionalities like sectioning and projection modes for a more immersive experience.

While Tetra4D Reader excels with documents created using its own products, it does have limitations with 3D PDFs generated by other solutions, where annotations can only be viewed in full screen and without JavaScript support. The app does not support 2D PDFs, prompting users to utilize alternative applications for such documents. Optimized for tablets, Tetra4D Reader stands out as a useful tool for professionals needing to interact with 3D content on the go.