Each mobile version (iOS, Android, and Amazon) is a separate purchase from each other, and from the PC/Mac version, due to App Store requirements and other factors. So:
- If you purchase the game for computer (on wolfquest.org or itch.io or Steam), you can download it for Windows or Mac OSes.
- If you purchase it from the Apple App Store for iOS, you can download it to any iOS device (iPhone or iPad) that has your Apple ID.
- If you purchase it from the Google Play Store, you can download it to any Android device that has the Google Play Store app with your Google ID.
- If you purchase it from the Amazon Appstore, you can download it to any Kindle or Android device that has the Amazon Appstore app with your Amazon ID.