Bluesky, the alternative to Twitter created by Jack Dorsey, is now available on Android devices by invitation only, according to a report by The Verge. The app first arrived on the App Store in February and is currently in beta, with a limited number of users (around 25,000) and some features missing, such as direct messages. However, it does have many Twitter-like functions, including the ability to follow other users, search for content and create posts with photos.