When in doubt, buy the Kindle version and enjoy it legally on your preferred screen.
Amazon Books and PDFs: What You Need to Know amaza book pdf
Amazon’s Kindle store sells books primarily in AZW3 or KFX formats (older files use .mobi). These are not PDFs. They are designed for reflowable text, adjustable font sizes, and Whispersync (syncing notes across devices). When in doubt, buy the Kindle version and