The problem is not really subscriptions, it's being able to enter and leave a subscription without hassle, something that is increasingly difficult these days. If you're paying for an ongoing service, then it makes sense to pay a monthly fee. But if you're paying for an app and don't expect significant long-term upgrades, then yes, a one-time purchase makes sense.
In theory, iOS implements this well by allowing you to unsubscribe with one click. In practice, it's a terrible UX. Just try finding the subscriptions page in Settings and you'll see what I mean.
In theory, iOS implements this well by allowing you to unsubscribe with one click. In practice, it's a terrible UX. Just try finding the subscriptions page in Settings and you'll see what I mean.