A UI is the M in the MVP. The back end would be a fair bit of work for nothing very exotic. I can test certain assumptions about the front end using public data

A UI is the M in the MVP. The back end would be a fair bit of work for nothing very exotic. I can test certain assumptions about the front end using public data without all that effort. Technically, it's probably a demo, not a true MVP, but it should tell me a lot about what works and what doesn't, and it shouldn't be too hard to expand into a true MVP afterward.