To me, vanity is only tangential to the purchasing of clothes, particularly fast fashion, where 'it looks good on the model' is often enough to part with money, not 'will it look good on me', or 'do I need it', which are often never even considered, surprisingly. The individual thinking they will look good is actually not always a factor; it can be a kind of addiction. Source comes from my previous employer (fast fashion related industry).

This app doesn't directly answer those questions, but it gives the data needed to stop and think about the answer (quickly). I don't consider myself a vain person, but I consider myself a person who makes poor decisions with their disposable income (fashion).

The main selling point would be this: You could avoid buying 2 shirts that will be unused then thrown away every year, for the cost of 1 shirt. Save money, and textile waste.

But also, why must everything be profitable? I most I could ever hope for is that the hosting costs are paid for.

I'll just hop in and say I enjoy putting outfits togther, it's fun, it's creative. I don't think of myself as vain, it's more like interior design, it's fun to put things togther that I find pleasent to look at.

Like the entirety of the fashion industry one may assume