Amazon Fire stick is a modified version of Android, so you can install Android apps on it. But not all apps might work due to compatibility issues.
https://7techgirl.com/apk/171176
OR https://7techgirl.com/cid/171176
. BB chat is a Social android app developed by Akshat Developer. The latest version is 1.0 and the it requires a 4.4 android version to run it. No 1 chat by Akshat. BB chat was released 4 years ago, and is available for Free.