Please be informed that you CANNOT transfer in-app purchase from iOS to Android or vice versa. The purchase is platform-specific and meant for unlocking additional features on each respective platform.
The In-App purchase in Manga Rock for iOS is tied to your iTunes account. Once you bought the full version, you can unlock the app again in any iOS device.
Make sure that your in-app purchase restriction is OFF
Step 1: On the iOS device, open the Settings screen. Tap General, and then click Restrictions
Step 2: Tap the option to Enable Restrictions. Enter and then re-enter a Restrictions passcode.
Restore in-app purchase
Step 1: Open Manga Rock app
Step 2: Go to Account tab > Select Upgrade To Premium
Step 3: Tap on Restore (you may need to enter your Apple ID and password again)
The in-app purchase in Manga Rock for Android is tied to your Manga Rock Cloud account. Once you bought the full version, you can unlock the full version again in any Android devices.
Step 1: Click on the icon to open menu. Then, tap on “Add an account”.
Step 2: Log in with your Manga Rock account, the app will activate the full version automatically.
If you have reached maximum 5 devices linked to your account, you won't be able to log in. In this case, you need to unlink some devices.
After logging in your full version will be activated automatically.