About two ipads ago, I used to have a fun photo-editing app called “RollWorld”. In fact, the icon is still on my home screen but it no longer works.
It used to do just what it said: you could twiddle a couple of sliders and it would twist your flat horizon (see top left image) all the way into a mini planet (top right). Or if you only tweaked it a bit you’d get something in between.
Does anyone know if it still exists, or do I just need A.I. ?