One subscription covers the whole family. Whichever parent pays, both get the features, and the other parent is never asked for money or shown a bill.
What your co-parent can see
- Which plan the family is on
- That there is a subscription
They cannot see your card, your billing address, or what you paid.
This is deliberate. The parent who can afford it can pay, and the other doesn't have to ask, be refused, or be reminded of it every month.