IonChat Firebase v3 Messenger is a full-fledged messenger app that synchronizes real time with the Firebase v3 Database. Changes done on the Firebase back-end should reflect properly with the running app. The kit uses a number of watchers, sockets, filters, and services to implement real-time sync with our Firebase v3 Database. More on the implementation structure will be discussed in the lower sections. The messenger supports one-to-one friend messaging, group messaging, friend management, and profiles.