Transfer Power Pack iOS/Android

It's not possible to transfer purchased between Android and Apple devices. 

All purchases are platform specific. That means If you purchase on Android, it will work on any other Android device. But an Android purchase won't work on an Apple iOS device. Nor will a purchase on an Apple iOS device work on an Android device. You can use the app for free without the Power Pack features, or you can purchase the Power Pack on the new platform.