DerFit gives every shopper the right fit at checkout — fewer wrong sizes, happier customers, and the fit data you've never had.
See how it works →Instead of a static size chart your customers have to interpret, DerFit uses a real AI body scan. Four quick photos, and your customer gets a precise size recommendation matched to your exact garment measurements — right at checkout.
No app download. No guessing. Just the right size.
And guessing is where it goes wrong. Your customers don't know their exact measurements, and every brand fits differently — so when they're unsure, they either leave without buying or order the wrong size. Either way, the connection to your brand gets weaker. DerFit takes the guessing out: every customer gets a size they can trust, so they buy with confidence.
Free to install · 30-day free trial