A plug for the app #SIDELOADTAG which uses tags to install APKs. Top Android TV tags include:

Kodi Krypton beta1: Z8X36QE PuppetMaster.TV: PMTVDL Google Drive: HF29B9C Google Chrome: JCBCQXR

For mobile you can get the latest Pixel Launcher app with tag PXLLNC.

I would love your feedback. Cheers!

https://play.google.com/store/apps/details?id=tv.puppetmaster.tinydl