The only e-commerce tool you need.

Built for fashion, jewelry, home decor and supplement brands. It finds the next product, works out your margin after returns, builds the page with sizes and bundles, and writes the ads, step by step in front of you.

Get startedSee what it does

$200 a month, one plan. Cancel any time.

Product video coming soon

Built for your niche, not for every niche.

It is tuned for four kinds of store: fashion, jewelry, gift home decor and supplements on subscription. Each one gets the pages, numbers and ads that niche needs, instead of generic advice.

Fashion

Dresses, sets, knitwear and menswear. In fashion, fit decides whether an order stays sold, so it plans for returns from the first question.

  • Size charts and fit notes for every product, so buyers pick the right size the first time
  • Try-on UGC scripts: the same piece on different bodies, filmed in daylight
  • Collection and drop planning: what to launch, when, and in how many colours
Ask itPlan a six piece autumn drop for my UK boutique.

Jewelry

  • Material and plating copy that stays honest: plated, vermeil or solid, said plainly
  • Gifting angles and the peak calendar, from Valentine's Day to Christmas
  • Macro shot lists that show the finish and the clasp up close

Gift home decor

  • Gift buyer angles and a seasonal calendar for £40 to £80 pieces
  • Night glow creatives: the lamp lit in a dark room, the way it is used
  • A safety marking checklist for lamps and anything with a plug or battery

Supplements on subscription

  • Subscribe and save offers: first order, delivery rhythm, skip and pause
  • Churn and lifetime value maths, so you know what a first order can cost
  • Careful claims: it flags health claims your market does not allow

Five jobs that decide whether a store works. One chat does all of them.

Every answer shows the steps behind it: what it searched, which pages it read, what it calculated and which files it wrote. Scroll to watch each one.

1

Find products worth testing

It checks demand on Google Trends, counts who is already advertising in the Meta Ad Library and works out your margin at a sensible price. For fashion it also weighs the season and the return risk. Every product ends with a verdict: test, maybe or skip.

Ask itFind me 3 fashion products to test in the UK this summer.
  • Europe, US, CA, AU, NZ
  • Demand and season
  • Ad competition
  • Return risk
  • Margin at 3x
Whistle Commerce/Summer fashion, United KingdomWorkspace
Find me 3 fashion products to test in the UK this summer. My budget is £1,500.
Whistle Commerce
Web searchwomen's and men's summer fashion trending UK12 results
FetchGoogle Trends, United Kingdom, last 12 months2 rising
FetchMeta Ad Library, United Kingdom74 ads
Bashscore demand, competition, margin and return risk

Linen sets are rising and the ads are spread thin. Here is the shortlist.

Shortlist for the UK, summerPrices in GBP
ProductDemandAdvertisersMargin at 3xVerdict
Women's linen co-ord setRising14£33Test
Satin slip skirtSteady27£22Maybe
Men's heavyweight overshirtFalling19£28Skip
Start with the linen co-ord set at £40 a day, with a size chart on the page. Kill it at £30 spend with no purchase. Bring the overshirt back in September.
Ask anything about your store, products, competitors or adsTerminal, files and web on
2

Tear down any competitor

It reads their store, their ads, their size guide and their checkout. You get their offer, their price and their funnel, plus a short list of what to take and what to avoid, with links so you can check.

Ask itTear down the biggest UK boutique selling linen co-ord sets.
  • Offer and price
  • Size guide and returns
  • Funnel
  • Ad angles
  • What to take
  • What to avoid
Whistle Commerce/Teardown: linen co-ord boutique, UKWorkspace
Tear down the biggest UK boutique selling linen co-ord sets.
Whistle Commerce
Web searchlinen co-ord set UK boutique10 results
Fetchtheir collection and product pages
FetchMeta Ad Library, UK, their page31 ads
Fetchsize guide, returns and checkout

Every one of their ads shows the set on one model in one size. That leaves room for try-on ads on different bodies.

Teardown4 sources
OfferTop and trousers for £58 as a set, £66 bought apart. Free UK delivery over £60.
Price£58 the set. Four colours, sizes 6 to 18.
Funnel
Try-on reelCollection pageProduct pageComplete the look
What to take
  • A set price that lifts order value
  • Model height and size worn on every photo
  • Try-on reels filmed at home
What to avoid
  • One model size in every photo
  • Returns window hidden in the footer
  • A size chart pop-up that breaks on mobile
Ask anything about your store, products, competitors or adsTerminal, files and web on
3

Check the numbers before you spend

Landed cost, a price around 3x that cost, payment fees and, for fashion, the cost of returns. You get your break-even ROAS and the ROAS to aim for before you run a single ad.

Ask itMy dress costs £15 landed and sells at £49. What ROAS do I need with returns?
  • Landed cost
  • Price at about 3x
  • Return rate
  • Break-even ROAS
  • Target ROAS
Whistle Commerce/Unit economics: broderie dressWorkspace
My dress costs £11.20 plus £3.80 shipping and sells at £49. About 20% of orders come back. What ROAS do I need?
Whistle Commerce
Web searchbroderie cotton dress price UK boutique9 results
Fetch3 competitor product pages and returns policies£42 to £65
Bashlanded cost, fees, returns, break-even and target ROAS

At £49 you sit inside the £42 to £65 range. Returns move your break-even from 1.51 to 2.02.

Unit economics with returnsPrices without VAT
Landed cost (dress and shipping)£15.00
Price, about 3.3x£49.00
Payment fees, 3%£1.47
Profit per kept order before ads£32.53
Profit lost on the 20% that come back−£6.51
Postage and fees on returns, 20% at £8.80−£1.76
Break-even ROAS after returns2.02
Target ROAS for 20% profit2.98
ROAS 0Below 2.02 you lose money. Aim for 2.98 or more.4
Ask anything about your store, products, competitors or adsTerminal, files and web on
4

Build the page

It writes the files for a product page and shows them live in the workspace: sizes, a fit note, an outfit bundle and a short FAQ. Switch between Preview, Code and Files, edit anything, then download a zip or paste each section into Shopify.

Ask itBuild the product page for the dress at £49, with a size chart.
  • Live preview
  • Sizes and fit note
  • Outfit bundle
  • Code you can edit
  • Zip download
Whistle Commerce/Product page: broderie dressWorkspace
Build the product page for the dress at £49, with a size chart.
Whistle Commerce
Write fileindex.html204 lines
Write filestyles.css112 lines
Write filesize-chart.js38 lines
Bashsync to workspace
Your page is in the preview. It puts the fit note right under the sizes, offers the dress with a matching bag as a set and ends with a short FAQ.
Download odelle-dress.zip
Ask anything about your storeTerminal, files and web on
PreviewCodeFiles
odelle-dress
Nothing to preview yet.
Free UK delivery over £60
ODELLENew inDressesBag (0)

Broderie Cotton Dress

Cotton broderie, fully lined, smocked back.

Size Size chart6810121416

Fits true to size. Model is 174 cm and wears an 8.

Dress£49
With raffia bag save £6£72
Add to bag
FitTrue to size, relaxed at the waist.
Length92 cm in a size 10.
CareCool wash, line dry.
5

Write the ads and scale them

Try-on hooks and UGC scripts built from what is already running in your niche, then a plan for spend: judge on 3-day rolling ROAS, raise budget 20 to 30% at a time, and kill what misses the rules.

Ask itWrite 3 try-on hooks and a UGC script for the dress, then tell me how to scale.
  • Try-on hooks
  • UGC scripts
  • 3-day rolling ROAS
  • +20 to 30% steps
  • Kill rules
Whistle Commerce/Ads plan: broderie dressWorkspace
Write 3 try-on hooks and a UGC script for the dress, then tell me how to scale and when to kill.
Whistle Commerce
FetchMeta Ad Library, UK, summer dress ads64 ads
Bashgroup angles by how long they ran
Write fileads/plan.md71 lines

The longest running angles are try-on hauls and fabric close-ups. Few show one dress on different sizes.

Try-on hooks
Same dress on a size 8, 12 and 16.Fit
One dress: a wedding on Saturday, the beach on Sunday.Versatile
Watch the broderie in real daylight.Fabric
UGC try-on script, 25 seconds
0 to 3sMirror try-on, hook to camera
3 to 10sA turn to show the waist and the length
10 to 20sHeight and size worn, fabric close-up in daylight
20 to 25sOffer: dress and bag set, free UK returns
Scaling on 3-day rolling ROAS
3.02.01.0 +20% +25% +30% break-even
Kill rules
  • £25 spent, no purchase: kill it
  • CTR under 1.2% after £20: new hook
  • 3-day ROAS under 2.02: cut budget
Ask anything about your store, products, competitors or adsTerminal, files and web on

Watch it build a product page, file by file.

It writes real files: HTML, CSS and a little JavaScript. The preview updates as each part lands, from the size selector to the fit note. Edit the code yourself, ask for changes, or download the whole project as a zip.

index.html styles.css 

        

        

          
PreviewCodeFiles
odelle-dress / index.html

          

            
Nothing to preview yet.

            

              
Free UK delivery over £60 · Free returns within 30 days

              
ODELLENew inDressesBag (0)

              

                
                

                  
Broderie Cotton Dress

                  
Cotton broderie, fully lined, smocked back. Mid-thigh length.

                  
Size Size chart6810121416
Fits true to size. Model is 174 cm and wears an 8.

                  
Dress£49
With raffia bag save £6£72

                  Add to bag
                  
  • Free returns within 30 days
  • Ships from the UK in 2 to 4 days

                

              

              
FitTrue to size, relaxed at the waist.
Length92 cm in a size 10.
CareCool wash, line dry.

              
How does the sizing run?+
Can I swap for another size?+

            

          

        

      

      

        index.html40 lines
        styles.css12 lines
        Download project.zip
        
      

    

  


  
  

    

      

        
Build your store from any store you admire.

        
Paste the address of a boutique you like. It studies how that store is built and how it sells, then builds your own brand on the same proven structure, with original copy and new images, ready for your Shopify.

      

      

        

          
The store you admireWhat it studies

          
          
  • Section order
  • Collections
  • Size guide
  • Outfit bundles
  • Returns policy

        

        

          
Kept
  • Layout and section order
  • Collections and navigation
  • Size guide, fit notes and outfit bundles
  • Funnel and drop logic

          
Never taken
  • Their words
  • Their photos
  • Their name and logo
  • Their reviews
  • Their colours and fonts

        

        

          
Your storeYour brand on that structure

          

            
Free UK returns within 30 days

            
FERNLEYNew inLinenBag (0)

            

              
              

                
Washed Linen Tee

                
Garment washed linen in sage. Relaxed fit with a dropped shoulder.

                
SMLXL

                
Tee£35

                
Tee and trousers save £10£75

                Add to bag
              

            

            
Size guide
Ships in 2 days
Free returns

          

        

      

      
    
        
  1. 1
    Paste a store you like
    Any public store address, from a fashion boutique to a jewelry brand. Add your brand name and your product photos if you have them.
    2. 
        
  2. 2
    It maps what works
    Page structure, collections, size guide, price ladder, bundles and returns, with a clear list of what it keeps and what it leaves out.
    3. 
        
  3. 3
    It builds your brand
    A full Shopify theme with your name, colours and fonts, original copy and new images. You see the preview first.
    4. 
        
  4. 4
    It lands in your Shopify
    Products, collections and pages as drafts, plus an unpublished theme. You review it and publish when you are ready.
    5. 
      

      
Build your store
The aim is a store that beats the one you started from: faster pages, a clearer offer and a brand that is yours.

    

  


  
  

    

      

        
Know your break-even ROAS before the first ad.

        
This is the same maths it runs in the chat. Drag the sliders to see what your ads have to return at your cost and your price. In the chat, give it your return rate or your subscriber churn and it adds those in too.

      

      

        

          

            
$12.00

            
          

          

            
$36.00

            
          

          

            
3%

            
          

          

            

            

          

          

            

            

          

        

        

          

            
Break-even ROAS1.57Below this, ads lose money

            
Target ROAS2.19To keep 20% as profit

            
Profit per order before ads$22.92Price is 3.0x your cost

            
Most you can pay per sale$22.92Break-even cost per purchase

          

          
          

            
Break-even ROAS = price ÷ (price − cost − fees)
36.00 ÷ (36.00 − 12.00 − 1.08) = 1.57

            
Target ROAS = price ÷ (price − cost − fees − target profit)
36.00 ÷ (22.92 − 7.20) = 2.29

          

          
Price is about 3x your cost. That is the range we like: it leaves room for ad costs as you scale.

        

      

    

  


  
  

    

      

        
Works across Europe and the English-speaking world.

        
Sell to one country or to all of them, in your currency. Price points, tax, delivery and consumer rules change with the market, and so does the answer.

      

      

        

          
          
          
          
          
Same question, four markets. Watch the price point, the tax note, the payment methods and the delivery advice change. It works the same way in every EU country, Switzerland, Norway, Iceland, Ireland, Canada and New Zealand.

        

        

          

            
Whistle Commerce/Linen co-ord set, United Kingdom

            

              
Price my linen co-ord set for the UK and tell me what to watch out for.

              
Whistle Commerce

              

                
Launch notesGBP

                

                  
Price
£58

                  
Your numbers
Landed cost £17.40. Break-even ROAS 1.99 before returns.

                  
Tax
Show prices with 20% VAT included. Adult clothing is standard rated.

                  
Customer rights
14 day cancellation right from delivery. Put the size chart and returns policy on the product page.

                  
Payments
CardsApple PayKlarna

                  
Delivery
Buyers expect 2 to 5 days. Say who pays for returns.

                

              

            

          

        

      

    

  


  
  

    

      

        
It works from a playbook of real store rules.

        
Not generic advice. Answers are checked against rules for pricing, testing, scaling and support that come from running stores. A few of them:

      

      

        
1
Price at about 3x landed cost
That puts break-even ROAS near 1.5, which leaves room for ads to get more expensive as you scale.

        
2
Judge ads on 3-day rolling ROAS
One good day is noise. Decisions to scale or cut are made on a three day average, not on today.

        
3
Scale in steps of 20 to 30%
Raise budget every few days while ROAS holds, and expect a short dip after each raise.

        
4
Kill rules come from your numbers
Stop an ad when spend reaches about your target cost per purchase with no sale, not at a random amount.

        
5
Read the hook before the ROAS
Hook rate, hold rate and click-through show which creative to fix while ROAS is still settling.

        
6
Start small, in the right market
Smaller markets are cheaper to learn in. Move up once you have a product with steady ROAS.

      

      

        

          
Connects to your store.

          
Connect Shopify so it can read your products, orders and themes. Only after you approve each change does it add products, collections and pages as drafts and a theme as an unpublished theme. It never touches your live theme, and you can disconnect any time. Ad account connections are next.

        

        

          
Shopify
Reads products, orders and themes. Adds drafts and an unpublished theme only after you approve.
Available now

          
Meta Ads
Read campaign results without copy and paste.
Coming soon

          
Google Ads
Search and Shopping results in the same chat.
Coming soon

        

      

    

  


  
  

    

      

        
One plan. Everything in it.

        
No setup fee, no contract and no tiers to compare. If it is not helping you build your store, cancel from your account.

        

          
What it takes the place of

          
  • An ad spy tool for competitor research
  • A trends and product research tool
  • A page builder, or a developer
  • A copywriter for pages and ads
  • The spreadsheets that hold your numbers together

        

      

      

        
Whistle Commerce

        
$200per month

        
    
          
  • Chat with the agent, with live web search and visible steps
    • 
          
  • Product and market research for Europe and English-speaking countries
    • 
          
  • Competitor teardowns: offer, price, funnel and ads
    • 
          
  • Unit economics, break-even and target ROAS, with returns and churn
    • 
          
  • Store and product pages with sizes, bundles and subscriptions, plus preview, code and zip download
    • 
          
  • Hooks, UGC scripts, scaling plans and kill rules
    • 
          
  • The store playbook built in, plus Shopify connection
    • 
        

        
Includes a monthly AI usage allowance under fair use. Long research and large builds use more of it than quick questions.

        Get started
        
Billed monthly in USD. Cancel any time.

      

    

  


  
  

    

      

        
Questions

        
Something not covered here? Read the terms and privacy policy, or ask inside the app.

      

      

        
Do I need experience?
No. It is built for people starting their first store as well as people already running one. It explains each step in plain English and tells you what to do next.

        
Which niches is it best for?
Fashion, jewelry, gift home decor and supplements sold on subscription. Those are the stores it is tuned for: size charts and returns maths for fashion, honest material copy for jewelry, gift calendars and night glow creatives for decor, and subscription offers and churn maths for supplements. It works for other products too, with less niche guidance built in.

        
Which countries does it work for?
All of Europe (every EU country, the UK, Switzerland, Norway and Iceland) and the English-speaking markets: the United States, Canada, Australia, New Zealand and Ireland. Tell it where you sell, one country or several, and it works in that currency, looks at that market and points out the tax and consumer rules that usually matter there. For anything legal, check with a local adviser before you launch.

        
Does it work with Shopify?
Yes. Connect your Shopify store and it reads your products, orders and themes. Only after you approve each change, it adds products, collections and pages as drafts and its theme as a new unpublished theme. It never touches your live theme or publishes anything; you review and publish when you are ready. You can also download any theme it builds as a zip. Meta Ads and Google Ads connections are coming.

        
Can it build a store like one I admire?
Yes, as your own store. Paste a boutique or a jewelry brand you admire and it takes the structure and the strategy: layout, page types, size guide and offer logic. Your store gets your name, original copy, its own colours and fonts, and your photos or new images. It never uses another store's text, photos, logo or reviews.

        
Where does the research come from?
Live web search and the pages it reads, such as Google Trends, the Meta Ad Library and competitor stores. Every step is shown in the chat, so you can open the sources yourself.

        
Will it find me a winning product?
Nobody can promise that. It helps you decide with better information and test with a clearer plan. What you launch and what you spend is always your call.

        
Is there a usage limit?
The plan includes a monthly AI usage allowance under fair use, so the service stays fast for everyone. Long research and large builds use more of it than quick questions. You can see how much you have used in the app.

        
Can I cancel?
Any time, from your account. You keep access until the end of the month you paid for.

      

    

  


  

    

      

        
Bring a product idea. Leave with a page you can launch.

        
Start a chat about a dress, a ring, a lamp or a monthly supplement, and watch it work.

      

      Get started