The latest version of the Kindle Fire 8 HD's FireOS is 6.3.0.1 which runs Android 7.1 Nougat.
This means it should support the latest version of the Apex Fusion app. As far as I know. it's only available on the Google Play store. This link explains how to install the play store and its dependencies without connecting the tablet to a computer or really mess with the settings:
https://www.makeuseof.com/tag/instal...-store-fire-5/
Last tidbit of advice, there's a built-in option for FireOS where it never goes to sleep: https://vidabox.com/blog/2017/02/11/...-fire-tablets/
Hope this helps. I have a Kindle Fire 10 (Bigger is not better apparently...) and if someone can report success, I'm getting an 8.
Bookmarks