Thanks for posting! You will need to test your app first to see if it's compatible:
As a general rule though, as long as it produces a valid APK file that does not depend on Google Play Store client app being installed on the device, then yes, it should work on Amazon devices as well. Thanks!
My app works well on Kindle Fire, but the biggest problem is that In-App Purchasing is not implemented in any flutter billing libraries.
The Firefly SDK for Android 3 Answers