“Sapio” is an open source, crowdsourced app you can get from F-droid which is designed to track and list which android apps will or will not work on a Gapps-free Android device.

Its searchable, per-app list has separate compatibility categories for straight AOSP/vanilla ROMs as well as devices with microG.

For each one of those categories it will show a color-coded legend:

Green - works with no limitations Yellow - works with some limitations Red - Doesn’t work at all

You can also contribute to Sapio by sharing your personal app compatibility experiences. The more submissions they get, the handier this tool becomes for all of us. ☺️