My wife plays on an Android phone.she now has an ipad which is not compatible with Google play. If the iOS version is downloaded how do you access the saved progress?
You can… But not at the same time. You’ll have to import progress each time you/ she switches devices.
The process of importing/ moving progress from Android to iOS (or vice versa) can be found here:
That isn’t my experience, I only had to do that once, and then I can switch between iOS and Android whenever I want.