I have 2 Ipods, how do I use subscription service?
How do you use the subscription service when you own two IPODs?
iPod touch, iOS 9.0.2
It depends upon the subscription service.
Some like iTunes match are good for more than one device
For some you have to purchase the service for each device.
For other you can purchases a Family (or similar) subscription and use it on more than one device) like for Apple Music