Fire OS is technically a version of Android, but completely in Amazon’s own style. It’s a forked version, with Amazon’s own overlay, unique features you won’t find in stock Android, and its core apps are all Amazon’s own.
While Fire OS has many of the basics, there are still quite a few things missing, most notably the Google apps that both Android and iOS users have come to depend on. That means no Gmail, Chrome, Maps, or Drive, though Amazon has its own versions of each.
