It doesn't explicitly support but today people work around it with one-time in-app purchases for all the functionality. Two apps I can think of doing this are H

It doesn't explicitly support but today people work around it with one-time in-app purchases for all the functionality. Two apps I can think of doing this are Halide and Darkroom. But yes, you can't just pay $X upfront in the App Store directly. The app makes you this offer, not the store. I agree it's not ideal.