Earlier quoted context omitted.
Out of curiosity, why did you start this? I've always used photofeeler.
Thanks for asking! I also used photofeeler and found the way it rated me 1-10 fairly harmful to my mental health. RankPic has users rank your photos best to worst, so it's just against yourself. Additionally it allows users to get more mileage out of each test, when you can do 2-6 photos instead of just one at a time. Anecdotally I've also heard it is a more fun experience for the rankers.
Are you up for a digital coffee? If so, my email is in my profile.
While I haven't been an entrepreneur, I did some side projects. Would be fun to chat about it.