So many apps will not offer the option to download .APK for phones that are NOT IN THE GOOGLE PLAY STORE? Google will not allow me to install them unless I let them mark my web browser so they can "track me all over the internet". I made my living in the technology industry so I do know more about this stuff than most people do.
I remember a lot of politicians back then got rich from insider trading from buying into R134 which is what replaced freon. Freon was a lot better than R134.