[_zen]

No offense, but did you bother to research Marvel _at all_ before asking this question? popapp app's landing page makes it very clear the workflow is physical paper -> photo -> storyboard, whereas Marvel's landing page is very clear their workflow is PSD/etc. -> storyboard.

Sometimes I feel like HN asks "how is this different from X app" without doing any research, just to be lazy.

[volaski]

No offense, I don't know where you did your research but I don't see anywhere on Marvel's landing page where it makes clear its main flow is PSD -> storyboard. In my opinion, Marvel's landing page makes it very clear that workflow is paper -> photo -> storyboard just like Popapp, but also supports importing a PSD image (which doesn't seem like a groundbreaking differentiation). Granted, the founder explained the difference somewhere above but they're still "improvements", they fundamentally do the same thing.