The Activeloop Hub app offers quick access and preprocessing for data with just a few lines of code. It allows users to store their dataset as a single NumPy-like array on the cloud, enabling seamless access and work from any machine without feeling like it's on the cloud in terms of speed of access. The tool is free, open-source, and evolving fast with great support from the community. Users can leverage its features to read their images into Numpy arrays, store them in Hub, and use them anytime, anywhere.