DerFit
Size intelligence for fashion brands
What this is
A Shopify app that gives fashion shoppers accurate size recommendations to cut the 20-30% of revenue that returns from wrong sizing typically cost a brand.
Our one-line summary — not the founder’s tagline.
- How it works
- A Shopify app that gives shoppers a size recommendation at checkout based on real body measurements rather than a generic size chart.
- What's different
- Targets the specific problem of size-chart mismatch across brands and regions, which drives repeat 20-30% return rates in fashion e-commerce.
- Best for
- Shopify fashion brands losing revenue to size-related returns.
What we measured
Nobody else publishes this — it comes from knocking on the door every day.
- Watched by us
- 18 days
- Last checked
- 10d ago
Where it shows up
Every group here is a page of its own — each one checked daily.
The numbersIs it still shipping, is it overpriced, where did it land — and what the price is built from.
League price & chart
No money. No seat. It goes on your record — and in 28 days reality settles it.
Calls are closed while we rebuild accounts. You can still read every one of them.
Analytics. Launched 18d ago on PeerPush, where it placed #503. Today, it's been quiet for 14 days and the price has started to bleed.
Already bleeding a little every day, and it accelerates the longer it stays quiet.
We check this site every day, ourselves. A founder can post “still working on it” — a claim like that doesn't price. What we price is what we can verify from the outside: evidence, not announcements. The real question isn't “will this be huge?” — it's “will they still be moving in four weeks?”
The market viewHow this launch is priced and ranked in our league — the investor side of the page.
ranked by the reality anchor, not the market price
It placed #503 on PeerPush with 3 votes.
No matter how much money goes in. There is no pump here — you can't make yourself right by buying more. The line only moves on things that actually happened: an award, revenue that grew, a new platform, code that shipped — or silence.
En eski 3 hareket bu listede yok — toplam 15 olay var. 1 quiet day in between are left out — nothing happened on them. A launch that goes quiet eases down a little at a time — never a cliff you could have run from the night before.
How the launch is moving on its own board, day by day — the crowd's attention.
A flat line is normal: votes stop within a day or two of launch, on every board. What's unusual — and what actually counts — is a launch that keeps pulling votes long after its day is over.
About
DerFit — Size Intelligence for Shopify Fashion Brands Fashion brands lose 20–30% of their revenue to returns every month. The number one reason? Wrong sizes. Customers don't trust size charts. A medium at one brand is a large at another. A size 38 in Europe is an 8 in the US. So they do what makes sense — they order two sizes, keep one, and send the other back. On your bill. Every time. DerFit fixes that. What is DerFit? DerFit is a B2B Size Intelligence tool for Shopify fashion brands. It gives customers the right size recommendation directly at checkout — based on real body measurements, not guesswork. The result: fewer returns, higher margins, and a better customer experience. DerFit is live on the Shopify App Store and available for fashion brands of all sizes — from independent labels to scaling e-commerce brands. How it works For the customer: They click "Find my size" on a product page, prop up their phone, and take 4 short photos. DerFit's AI body scanner analyzes their body measurements in seconds and instantly recommends the perfect size — before they order. For the brand: After installing DerFit as a Shopify plugin, the brand enters the exact measurements for each garment — chest, waist, hips, and more — for every size in their catalog. DerFit then matches each customer's unique body profile against these specs and delivers a personalized size recommendation at checkout. No guessing. No size charts. Just the right size, every time. Key Features → AI Body Scanner — camera-based, 4-photo process, works directly in the browser. No app download required. → Smart Size Recommendations — matches real body measurements against brand-specific garment specs for precise, personalized recommendations. → Brand-Specific Admin Rules — define custom fit preferences per garment type (slim fit, regular, oversized) to match your brand's sizing standards. → Post-Purchase Feedback Loop — customers rate the fit after receiving their order. This data feeds back into the system to continuously improve recommendation accuracy. → Analytics Dashboard — track return rates per product, monitor scan activity, review customer fit feedback, and identify which sizes are recommended most frequently. Full visibility into the fit data behind every return. → Store Owner + Internal Views — separate dashboard views for brand-side analytics and DerFit internal monitoring. → Shopify Native — built as a Shopify app with Theme App Extensions (App Blocks) for easy setup. No coding required. Who is DerFit for? DerFit is built for Shopify fashion brands that sell clothing online and are tired of high return rates eating into their margins. Whether you're running a streetwear label, a premium fashion brand, or a fast-growing Shopify store — if sizing is a problem, DerFit is the solution. Why DerFit? DerFit was built by Korra, former founder of LeVoleur — a fashion brand that generated €600k in revenue and faced the same return problem every clothing brand faces. DerFit was built from the inside, by someone who lived the problem. That's why it works. The fashion industry has a sizing problem. DerFit is the solution.
Where it launched
1 platform| Platform | Votes | Counts toward price | Link |
|---|---|---|---|
| PeerPush | 3 | sets the price | ↗ |
The board it did best on sets the price. Every other board only adds to it if the launch also placed high on that board too — because just showing up somewhere isn't an achievement. Listing on twelve directories is free; placing well on them isn't.
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