Yes — on Google Play
Guardhouse has a Google Play listing.
App Store
On Google Play
Is Guardhouse on Android?
About Guardhouse
With Guardhouse, you can monitor all your HomeKit camera feeds in a single, stylish app that's designed to do one thing, and do it well. Keep an eye on everything from the overview screen, or dive into a specific camera for a closer look, to listen in, or to use the intercom for a two-way conversation on supported ca…
Guardhouse is listed on both the App Store and Google Play from David Blundell, so you can install it on Android phones and tablets. The Play Store listing shows 50,000+ installs.