How we check ourselves
Anyone can say "we use real measurements." We'd rather show you how we know — and be honest about the things we can't prove.
What we promise
✓
We read every size chart from the shop itself.
Not from a blog, not from memory — from the retailer's own published guide.
✓
If we can't read a chart, we leave the shop out.
We don't guess a measurement to fill a gap.
✓
When we're unsure, we tell you.
You'll see "limited data" instead of a confident-sounding number we can't back up.
✓
You stay in control of your measurements.
Your body numbers stay on your device — we don't need them to help you.
How our checks work, in plain English
Before anything goes live, it has to pass a series of automatic checks — the same way a proofreader checks a book before it's printed. If a check fails, the update simply does not go out.
- The fit advice behaves. We test that changing your size, your measurements, your fit preference or your budget changes the results in the way you'd expect — every time.
- The shops still add up. If a new brand appears that we haven't properly measured, the check stops the update until a person has looked at it.
- Product details don't quietly vanish. If a shop's own product information suddenly drops away, a check catches it before you'd ever see a blank page.
Nothing reaches you until these checks pass. That's the whole idea: an honest page you can rely on is worth more than a fast one you can't.
What "confidence" means on this site
When we show a fit match, we also show how sure we are. In everyday terms:
- High confidence — the shop publishes full measurements and this brand's chart is well understood.
- Fair confidence — we have good data, but with a small gap worth knowing about.
- Limited data — we're being straight: we don't know this brand well enough to promise a close fit. You'll see the reason, not a silent guess.
The honest bit. A size chart is a starting point, not a guarantee.
The same UK size is cut differently by every shop, and two garments in the same range can fit
differently. Our job is to improve your odds and explain why — it doesn't replace a
changing room, and we won't pretend it does.
Why we'd rather tell you what we don't know
- We removed a feature that would have guessed your fit from fabric — our own tests showed it was wrong far more often than right.
- We flag shops whose charts stop early, instead of stretching a UK 24 into a pretend UK 32.
- Every measurement shown can be traced back to the shop's own guide. If we can't trace it, we don't show it.
Find your fit → What is Fit Intelligence? →
Last checked and updated 11 October 2026. This page describes how our system works today; as we improve it, we'll keep this honest and current.