The Frankie Shop
Chambray shirt
100% cotton
100%
Shop only the natural fibers
You know the feeling.
The dress is perfect. Then you find the tag: 95% polyester.
Checking is the annoying part. It’s buried three clicks down on every single listing, and you have to do it every single time. So we do it for you — say how much natural fiber you want, and we’ll only show you clothes that clear it. From the stores you already shop.
WORKS WHEREVER YOU ALREADY SHOP
100%cotton — under your lens
Try your number
You pick the number.
We do the digging.
👋 Waved goodbye to 4 pieces below your bar
The Frankie Shop
Wide-leg trouser
98% cotton · 2% elastane
98%
The Frankie Shop
Ribbed tank
95% cotton · 5% elastane
95%
The Frankie Shop
Merino crew
100% merino wool
100%
A demo with eight garments. The real thing reads a whole catalog — 1,876 pieces from one store, filtered live.
Any store
Paste a store. Your bar comes with you.
Drop in a shop you already like. Pettine reads the whole catalog and keeps only what clears your number — so you’re not opening listings to find out.
thefrankieshop.com
80%
👋Waved goodbye to 1,733 pieces below your bar
Counts in this preview are illustrative. The app reads the store’s live catalog and shows its work on every item.
How it works
Say your number
How much natural fiber do you want? 80% is a good place to start — it keeps the great cotton shirt with a bit of stretch, and drops the polyester one pretending to be silk.
Point it at a store you like
Pettine reads the whole catalog — every composition, every listing — before you open a single one. Wherever you already like to shop.
Shop what clears your bar
One honest number per item, the full breakdown a tap away, and you buy on the store's own site — same as always. We just take the digging out.
One question nobody else asks you
Viscose, modal and Tencel start as trees and end up in a chemical bath. Some people count them as natural. Some don’t. There’s no right answer, so we’re asking you — one toggle, and the whole app recalculates.
Know your fibers
Three kinds of thread
Every garment is some mix of these. The middle column is the interesting one — you decide which side it lands on.
Natural
Cotton · Linen · Hemp
Wool · Cashmere
Alpaca · Silk
Grown, shorn, or spun by something alive. Always counts toward your number.
Semi-synthetic
Viscose · Modal
Tencel · Cupro
Bamboo
Starts as a tree, ends in a chemical bath. Your toggle decides whether these count — there's no right answer.
Synthetic
Polyester · Nylon
Acrylic · Elastane
Petroleum, spun fine. Elastane's the famous 2% — your bar decides if a little stretch is fine.
The plastic century
How everything became 95% polyester
It took about eighty years. Here’s the short version.
1941
Invented
Two chemists in a Manchester lab patent polyethylene terephthalate. It's a plastic. It makes a decent thread.
1951
The miracle fiber
Dacron arrives in America — one demo suit gets worn 67 days straight without pressing. Nobody asks what it feels like in July.
1977
The leisure suit
Polyester becomes a joke at parties. It doesn't matter. It's cheap, and cheap wins.
1994
Your mom's shirt
She buys a cotton shirt. You'll see it again in 2026 — still fine, still hanging in her closet.
2002
The crossover
Polyester passes cotton as the world's most-produced fiber. Fast fashion scales on it.
Today
More than half
Over half of everything made now is plastic. Which is why you flip the tag.
Maybe you just noticed your mom still has a shirt from 1994 that’s outlasted everything you bought last year.
More polyester, fewer wears
Drag across the years.
199431% polyester · worn ~166 times
Your mom buys a cotton shirt. You’ll see it again in 2026, still fine.
Fiber share after Textile Exchange market data. Wear counts are illustrative, following McKinsey’s finding that clothing utilization fell 36% between 2000 and 2015.
100%natural
98%natural
100%natural
PETTINE
About the name
The comb on a weaving loom
A pettine (peh-TEEN) is the comb on a weaving loom. Every thread in a piece of fabric passes through it, and it’s what decides how tight the weave comes out. The weaver picks the comb. The comb holds the line.
We liked that.
1,876
garments read from one store’s live catalog, filtered on a phone.
It’s already real.
Coming soon
Free to start. Priced to keep.
Every install gets all of Pettine Plus for 10 days — no card, no signup, nothing to cancel. Name a store, watch the pieces below your bar disappear, and decide from there.
After that you keep one store, its alerts, and the slider — free, permanently. The slider is never gated. It’s the thing you show your friends.
Early pricing
Founding annual
Locked for life. First 90 days only.
$39.99/yr
Lifetime
Only for the first 250 people, then it’s retired.
$119once
Prices go up, never down. The founding window ends when it ends.
See what you getiPhone firstAndroid afterNo card to try it
PETTINE
80%at least, natural
👋Waved goodbye to 4 below your bar
100%
Chambray shirt
$130
98%
Wide-leg trouser
$155
95%
Ribbed tank
$65
100%
Merino crew
$190
Drag your bar anywhere on this page — the phone follows.
Pricing
Where the line sits
Two tiers, and that’s all there will be. What you pay for is breadth and memory — more stores, and an app that remembers what you decided.
Pettine
Free
Permanent. No card, ever.
- One saved store, kept forever
- Full alerts on it — price drops, back in stock
- Three store lookups, once, then done
- The slider and the natural-fiber definition, uncapped
- Full fabric breakdown and buy click-through
10-day trial, no card
Pettine Plus
$59.99a year
$5.00 a month — exactly half the cost of paying monthly.
- Unlimited stores, with alerts on all of them
- Saved lenses — a different bar for kids' clothes than for coats
- New arrivals flagged the moment they clear your bar
- Deeper filters: elastane, animal fibers, recycled content, finishes
- Priority reading and request-a-store
- Founding member badge
At launch only
Two prices that exist once and never come back. Prices go up, never down — the founding window is meant to end.
Founding annual
$39.99/yr
Locked for life, not an intro rate — it renews at $39.99 for as long as you keep it. Open for the first 90 days after launch.
Lifetime
$119once
Only for the first 250 people. After that it goes to $149 for a short tail, then retires for good.
You buy from the stores, same as always — we never take the sale.
Questions
Fair questions
Isn't this a sustainability app?
No. Cotton is water-hungry; recycled polyester has a real case. We don't rank fabrics by virtue — we just tell you what's in the clothes. What you do with that is up to you.
So polyester is bad for me?
We're not the people to ask, and anyone who answers that confidently is selling something. What we'll do is tell you what's in it, fast, so you can make your own call. That's the whole product.
What counts as natural?
Your call. Cotton, linen, wool and silk always count. Viscose, modal and Tencel start as trees and end up in a chemical bath — some people count them, some don't. There's a toggle, and the whole app recalculates.
When does the app come out?
Soon, and iPhone first. Everything on this page already runs — the part we're finishing is the bit that reads a whole store on your phone without you waiting on it.
What do I actually get for free?
One store you keep forever, full alerts on it, three one-time lookups for anywhere else, and the slider at full range. The slider is never gated — not on the free tier, not ever. What you pay for is breadth and memory: more stores, and an app that remembers what you decided.
Why pay for a filter?
Think of it as never having to open another listing just to learn it's 92% polyester. If that happens to you twice in one session, the subscription's already paid for itself. And you get ten days of the paid tier up front with no card, so you'll know before you decide.
What if the data's wrong?
We read what the store publishes. If they're wrong, we're wrong — and we'll say so. That's also why the breakdown is always one tap away. We show our work.
What if a store can't be read?
Then we'll tell you plainly: we can't read this store yet. It means they don't publish what their clothes are made of anywhere we can find. That's on them, not you.