HeyFit

HeyFit is installed from your store’s Shopify admin. Shopify asks you to allow read access to your catalog, then HeyFit opens right inside the Shopify admin: no extra account needed. On the home page, the “Get started with HeyFit” list guides you: create a size chart, assign it, turn on the button, then, if you wish, connect HeyReturn. Steps check themselves off as you go.

Read access to your catalog only (Shopify read_products scope), to check that your size charts match your products’ sizes. HeyFit never changes your products, orders or customers.

Yes, on app.heyfit.app, with your Heylio suite account (the same as for HeyReturn and HeyTracker). You’ll find all your account’s stores there, and switch between them with the selector at the top of the menu.

In the Shopify admin: Online Store → Themes → Customize, pick the Product template, then Add block → Apps → “Find my size (HeyFit)”. Place it wherever you like, for instance below the size selector, and save. Faster: the “Add app block (2.0 themes)” button in the “Get started with HeyFit” list opens the theme editor with the block ready to place; “Turn on app embed” does the same for the embed described below.

Use the automatic embed: in the theme editor, open “App embeds” and turn on “Find my size — automatic embed (HeyFit)”. The button places itself below the add-to-cart button, on every theme, older ones included (Debut…). If you also add the regular block to the product page, the automatic embed steps aside: the button never shows twice.

The button only shows when everything is in place: a size chart applies to the product (see “Assign a size chart”); at least one size of that chart matches the product’s sizes (an “S, M, L” chart can’t serve a product sized “38, 40, 42”); the block or the automatic embed is turned on in the published theme; on the Free plan, the size chart is your published one (the first you created): the others are kept but only show with HeyFit. In the theme editor, a notice tells you when no size chart applies to the product shown, or when its sizes don’t match the product’s. Otherwise, the product page works normally, just without the button.

Two tabs: “My size” and “Size chart”. In “My size”, the customer enters at least one body measurement and says whether they like to wear their clothes snug, regular or loose; they get the recommended size, with a confidence score and a measurement-by-measurement breakdown, and a “Select size …” button that picks it on the product page. “How to measure”: a figure shows where to place the tape measure for each measurement (chest, waist, hips, inseam), with a tip; centimeters or inches: the customer picks their unit, whatever your chart’s unit (the chart, the inputs and the advice follow); their choice is remembered on their device; their measurements can be kept in their browser for your other products: see “Does HeyFit store my customers’ measurements?”.

Yes, in the block settings: button text (empty: “Find my size”, translated to the store’s language), appearance (button or link), button and text colors (empty: your theme’s). If the contrast is too low, the text switches to black or white automatically.

Start from a template (top, bottom or other) and adjust the measurements to your fits: chest, waist, hips, inseam, each with a minimum and a maximum per size. Measurements are entered in centimeters or inches; switching units converts the values (rounded to the nearest half). HeyFit flags overlapping sizes, and checks that the chart’s sizes match your products’ sizes.

Yes: export it as CSV, then use “Import a size chart from a CSV”. The file contains: a size column (or taille), then the columns in any order; then a …_min / …_max pair for each measurement: chest, waist, hip, inseam — French headers are also accepted: poitrine_min, tour_de_taille_max, hanches_min, entrejambe_max…; a comma, semicolon or tab separator; with a semicolon or a tab (French Excel exports), a decimal comma is accepted (“82,5”); 40 sizes and 100 KB max. A preview shows the sizes read before anything is created. Nothing is created while a row has an error: each error gives its row.

Yes: the chart’s “History” panel keeps its last 50 changes (who, when, what). “Restore this version” brings back that version’s name, category, unit and sizes; assignments don’t change. The restore is itself added to the history: nothing is lost.

From the size chart, assign it to products, a collection, a product type, or make it the store’s default chart. When several charts could apply, the most specific wins: product, then collection, then product type, then default chart. The Products screen shows, for each product, the chart that applies and where it comes from, and helps you find products without a chart to assign them one in a single step.

If your store uses HeyReturn, from the same Heylio suite, it automatically sends HeyFit the items returned for a size reason (“Too small”, “Too large”). HeyFit counts them product by product, in the “What your returns say” screen. From 3 returns that say which way an item is off, a trend appears (“runs small”, “runs large”), to be confirmed. From 5, it becomes advice: on the product page, the size suggested to the customer moves by one size, and the size from the chart stays visible next to it, with the explanation.

Yes: in “What your returns say”, state yourself that a product runs small, runs large or is true to size. Your statement always takes precedence over what returns say, and applies right away.

The admin is in French and English. Inside the Shopify admin, it follows your admin’s language. On app.heyfit.app, it uses your browser’s; you can change it in your account menu, at the bottom of the menu: your choice is remembered.

The button and the size guide come in six languages: English, French, Spanish, German, Italian and Dutch. They show in the store language the customer is browsing, and in English for other languages. A button text entered in the block settings replaces the default text, in every language.

Not on our servers. The measurements entered are used to compute the recommended size, then our servers discard them: they never store them. HeyFit only keeps an anonymous record of each recommended size, and of the size chosen next, to measure the guide’s effect. So that your customer doesn’t have to enter them again on your other products, the guide keeps them in THEIR browser, on their device, as long as the “Remember my measurements on this device” box is ticked. It is ticked by default, and they can untick it: nothing is kept then. These measurements are sent nowhere (neither HeyFit nor you can read them); “Clear my measurements” deletes them, and they are deleted automatically after one year. Everything is detailed in the privacy policy: app.heyfit.app/privacy.

HeyFit’s access to your store is cut immediately. 48 hours later, all of the store’s data (size charts, assignments, returns, statements) is deleted, unless you have reinstalled HeyFit in the meantime.