If you upgraded ton your iTunes account you will be able to access your premium subscription on a compatible iOS device associated with the same Apple ID used to purchase your premium content. For example, you can tune in on your iPhone and iPad. :)
If you upgraded to a premium subscription on your Google Play account you will have the ability to access your upgraded content across compatible Android devices associated with your account.
While we do not have cross-platform capabilities (the ability to subscribe on Google Play and then access the upgraded subscription from an Apple device and vice versa) we are actively working towards developing this option for the future and appreciate your understanding until that is available.