Ipynb Viewer is a free Android app developed by Boring Island that allows users to open Ipynb files with ease. This app is perfect for those who work with Jupyter notebooks and need to access their files on-the-go. With no need for an internet connection, Ipynb files are quickly converted to HTML format, allowing for easy viewing and zooming capabilities.

This app is straightforward and user-friendly, making it a great choice for anyone who needs a simple solution for opening Ipynb files. The best part is that it's completely free to use. Whether you're a developer or a student, Ipynb Viewer is a must-have app for anyone who works with Jupyter notebooks.