Why don’t you launch a new app Infuse Pro (not Infuse Pro 5) that works as lifetime subscription? The major problem for me with in app purchases is the family sharing. Using the same Trakt account (designed to be individual) for a group of people, doesn’t make sense.
Yeah that’s what’s holding me back from doing the lifetime. I’d rather pay that much for an app than an in-app subscription since we all use different Trakt accounts.
As of iOS 14.2, Apple now supports Family Sharing of in-app purchases and subscriptions.