Page visible only if you have installed the app in the past: https://play.google.com/store/apps/details?id=dji.mimo
The mimo app on the other hand is straight up garbage. The thing never works right if it even connects to the device at all. I regret buying that thing (it's the osmo mobile version 2 or 3). It's so bad I don't think I will ever buy a new dji device.
I love flying my spark but the battery life is trash and my Air 2 isn't fun to fly (it's more of a utility van than a fun little sports car). I'd love to get a replacement for my spark. It's probably better to just build my own at this point.
Alternatively it's probably a lot cheaper to offer an apk while for Apple there is no other option than the app store requiring all kinds of paperwork and lawyer fees.