You can sign up for Joy 101 using your email, Apple ID, or Google ID. Once you’ve created your account, your subscription and app experience will sync across devices—as long as you’re signed in with the same login credentials.
For example, if you sign up with your Apple ID on your iPhone, you’ll just need to log in with that same Apple ID on your iPad to access your account, sessions, and subscription. The same goes if you used email or Google ID.