A subscription to what? There's no such thing as a generic Roku subscription (Roku is free to use), but there are many possible subscriptions to different services. If you subscribe directly with a provider, you can generally use the subscription on any device. If you subscribe to something through Roku, the subscription is good on any Roku device linked to the same Roku account.
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.
