Install on Shopify
Step 1
They enter their details.
Gender, height, weight and age, sent over an encrypted connection.
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- WeeFizz Fashion
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Official app · Shopify App StoreThe right size on Shopify.
Your customers see their size on the product page, calculated in your own size chart, no photo needed.
- 14-day free trial
- Installed with no developer
- Billed by Shopify
In short
What is a Shopify sizing app?
WeeFizz Size Recommender is a Shopify app that adds “Find my size” to your product pages, next to the size selector. The customer enters their gender, height, weight and age, chooses their body shape from images, and gets their size calculated in the product's size chart.
Key point: a size chart app shows a table of centimetres, and the customer chooses alone. WeeFizz keeps your chart as the starting data and does the calculation for them. Full comparison and 6 questions to ask before choosing: our size recommendation guide (in French).
Getting started
Installed in four steps.
The app sets up your WeeFizz credentials by itself: no keys to copy.
- 1
Install from the Shopify App Store
Open the “WeeFizz Size Recommender” listing, click Install, choose your store.
- 2
Choose your plan
Solo, Studio or Agency, depending on your recommendation volume.
- 3
Add your size charts
Import your charts or start from one of 8 ready-made templates. WeeFizz calibrates them.
- 4
Switch on the widget
In the theme editor. Colours, corners and label are set from your space.
The customer journey
Three screens, one size.
Step 2
They choose their body shape.
Upper body, stomach, hips: the image that looks like them.
Step 3
They see their size.
Remembered for the rest of the visit.
- 14 measurements, one size. The answers become 14 girth and length measurements, compared with the product's size chart.
- One chart per product. Jeans, a hoodie and a dress each keep their own chart.
- Try-on as an option. WeeFizz Essayage can extend the journey. The size is still calculated with no photo.
Screenshot of the WeeFizz space, Analytics section (demo store).
During the trial
Judge on your own figures.
The analytics space is included in every plan:
- Widget usage. How many visitors open it, page by page.
- Recommended and chosen sizes. When they differ on a product, you know which page to review.
- Conversion. The share of customers who add to basket after their recommendation.
Why it matters: size-related returns in e-commerce.
Plans and free trial
Install. Measure. Decide.
Solo, Studio or Agency, with a 14-day trial on each. One subscription per store.
- 01
Install
From the Shopify App Store, on your real catalogue.
- 02
Measure
For 14 days, with your own figures.
- 03
Decide
You keep the plan that suits you or you stop. The subscription appears on your Shopify invoice.
Merchant questions
Frequently asked questions.
What is a Shopify size recommendation app?
It is an app that calculates each customer's size for each product, right on the product page. With WeeFizz Size Recommender, the customer answers a few questions, no photo needed, and sees their size calculated in the product's size chart, instead of reading a table of centimetres on their own.
Is my Shopify theme compatible?
The widget is added through an app embed block, Shopify's standard mechanism: you switch it on in the theme editor, without changing your theme's code. The “Find my size” button then appears on your product pages. If your theme is heavily customised, book a 30-minute call and we will check the display on your own products.
How long does installation take?
A few minutes, with no developer. You install the app from the Shopify App Store, your WeeFizz credentials are set up automatically, you import your size charts or start from one of 8 ready-made templates, and the button appears on your product pages.
Do my customers need to send a photo or measure themselves?
No. They enter their gender, height, weight and age, then choose their body shape from images. The WeeFizz engine derives 14 measurements and calculates the size in the product's size chart. No photo, no tape measure.
What data is collected, and where is it hosted?
Only declared answers, with no photo and no biometric data. They travel over an encrypted connection (SSL) and are hosted in the European Union, in line with the GDPR. A customer's e-mail address is linked to their recommendation only if they are logged in and have given consent. Size charts, history and analytics belong to your store.
Which languages does the widget display in?
The widget displays in French, the language shown on the app's Shopify App Store listing. If your store sells in another language, write to us before installing.
How do the trial, billing and uninstalling work?
Every plan (Solo, Studio, Agency) starts with a 14-day free trial. On Shopify, the subscription is billed by Shopify, on your Shopify invoice.
At the end of the trial, you keep the plan that suits you or you stop. If you uninstall the app, the button disappears from your product pages and the subscription billed by Shopify stops, with no exit fee.
Another question? Write to the WeeFizz team. Overview: WeeFizz Fashion for online stores, also on PrestaShop, WooCommerce and via a JavaScript SDK.
WeeFizz Shopify app
Their size, starting today.
Test the app for 14 days on your catalogue, with no commitment.
