"Katana" is simply the internal developer codename for the official app. While modern downloads just say "Facebook," older versions of the app were often labeled com.facebook.katana in the package manager.
Published by: Tech Retrospective Reading time: 4 minutes Introduction: What is "Facebook Katana"? If you’ve been digging through old XDA forums or trying to revive a vintage smartphone (like the Samsung Galaxy S2 or HTC One X), you might have stumbled upon the term "Katana."