It's called Gbox (Google Box) and basically it lets you run apps that relies on GMS inside a profile similar to work profiles, except that it's more optimized, cleaner and easier to use. While running MicroG is privately the best option I think that if you can't install a custom rom or don't want to root my phone then this is IMO the best way to run google play apps. The only downside is that the app is not FOSS but you can turn off Internet access and use the app normally