Yes, subscriptions can be implemented manually. We did that two years ago before Stripe had the full “Billing” API. One big win you get with Billing, though, i

Yes, subscriptions can be implemented manually. We did that two years ago before Stripe had the full “Billing” API. One big win you get with Billing, though, is automatic generation of invoices each subscription period. It’s nice not to have to write that code, and the automatic invoices tie in nicely to a few other things Stripe can do better than we can, like automatic retries of payments that fail.