Firefox Beta is a version of the famous Mozilla Internet browser, that gives you a first-hand look at all the changes made to the tool, before anybody else. The app is mainly aimed at those who want to contribute to improving this browser, even if it means possibly running into some unstable changes from time to time.
In short, Firefox Beta gives you access to safety, performance, and customization improvements before they're released in the normal version of Firefox. You can enjoy new features before anyone else, and also have a hand in improving any important aspects of the app, ultimately helping the company progress and evolve.
This app looks exactly like the normal version of the browser, aside from some features that might be included in the future. You can save your favorite websites, create shortcuts to the sites you visit most, share links on social networks, and easily sync extensions. You can browse and enjoy Firefox, while you also contribute to its community by just using it.