APPLE OWNS YOUR PAID SUBSTACK SUBSCRIBER DETAILS

Readers can now subscribe to your Substack publication on their iOS device. But be careful – if you ever choose to leave Substack, you can’t take that paid member with you.

For IAP subscribers, Apple does not transfer billing relationships between platforms. You will still have access to their email addresses, so you can reach out and invite them to re-subscribe elsewhere.

We’ve also built a process to make this outreach easier for creators who decide to move their business off Substack. Our support team can work with you directly to guide you through your options.

So if you ever move to something like Ghost, Beehiv, Buttondown, or Memberful, it involves a couple more steps now. Yes, you still have their email address – which is very good! But if you have to suddenly tell 100 people who’ve signed up on an iOS device to cancel and sign up somewhere else, you will probably lose a handful in the process.