The Mac App Store (and all of Apple's App Stores) doesn't enable this sort of licensing. It's exactly the sort of thing that drives a lot of developers to indep

The Mac App Store (and all of Apple's App Stores) doesn't enable this sort of licensing. It's exactly the sort of thing that drives a lot of developers to independent distribution. That's why we see so many more subscription-based apps these days, application development is an ongoing process with ongoing costs, so it needs to have ongoing income. But the traditional buy-it-once app pricing doesn't enable that long-term development and support. The app store supports subscriptions though, so now we get way more subscription-based apps. I really think Siracusa came up with a clever pricing scheme here, given his want to use the app store for distribution.