I had the original Mavic Mini and installed the DJI Fly App (v1.2.1 on my phone now) from the Play Store.
edit: here's the listing: https://play.google.com/store/apps/details?id=dji.go.v5
Though it doesn't show up in search from the web.
edit 2: The Android download on their site is definitely an APK and not a Play Store link: https://www.dji.com/downloads/djiapp/dji-fly
Why in the world would they need to do this?