Denim Fit Finder
A garment-measurement matching tool that helps people find jeans that actually fit, conceived and built independently. It's now the highest-traffic product on the site, outperforming every other piece of content combined.
The number on the size tag is not a measurement
A tag size 32 from one brand can measure 35 inches at the waist from another, and almost no retailer publishes the numbers that actually determine fit: rise, thigh, knee, leg opening. That is not a rounding error, it is vanity sizing and plain data ignorance, and it pushes the real work of finding a pair that fits onto the customer through trial, error, and returns. Fit Finder works around it by ignoring the tag. Every pair in the catalog is stored by its garment measurements, taken flat, so a user can start from a pair they already own and get the models whose measurements are closest to it, or filter the whole catalog by the measurements that matter to them. Tag sizes still show up in the results, because that is what you have to order, but nothing is ever matched on them.
A free tool, a premium layer, and a native app
Browse, Compare, and Find Similar are free on the web and in the app, and stay that way. Premium adds three things that only work if something is watching the catalog for you: fit-match alerts, which fire when a newly added model matches your saved measurements; price-drop and restock alerts tied to the exact size you own rather than the model in general; and Closet Insights, a read on how you actually run in each brand you own, built from your own saved pairs instead of a generic size chart. It is $5.99 a month or $35 for the first year. Billing runs through Stripe on the website, never inside the app, which keeps the Play Store billing rules out of the product design. A native Android app wrapping the same tool is published on Google Play.
Two features that came from user feedback
The catalog originally listed waist, inseam, and rise. Real usage showed two gaps worth closing: fabric composition, so a user can tell whether a pair will shrink with washing before they buy it, and a thigh-to-waist ratio, which turned out to matter more to fit than either measurement on its own for a lot of body types. Neither was in the original plan; both came from watching what the data and the users were actually asking for.
A problem I couldn't stop thinking about
Denim Fit Finder is a product I noticed a real gap for, built alone, shipped, and have kept iterating on since, based on how people actually use it rather than how I assumed they would. It also says something about how I work outside a job description. I had no background in the field, so I learned what I needed to and built it anyway.