It might have been an oversight in the approval process. But it looks like they have been asked to comply with the rules by adding IAP to their iOS app as well:

It might have been an oversight in the approval process. But it looks like they have been asked to comply with the rules by adding IAP to their iOS app as well: https://twitter.com/Fastmail/status/1273800222989324288 https://twitter.com/Fastmail/status/1273800222989324288