I've recently been working on an ebook that I intend to self-publish. I was testing it using the Kindle Previewer application on my Mac, but when I tested the book on actual iOS devices (iPad and iPhone), I realized there were many problems that I had to fix.
So, I want to test on an Android device too, but I don't own one at present. I was thinking of buying a FireHD because it's a cheap tablet and I will only use this to test my book, but I know FireOS and Android are originally based off the same code but not exactly the same.
My question is: Are the FireOS Kindle and Android Kindle apps similar enough that I can test on one and be reasonably sure that my book will display about the same on the other?