ZeDaq.ai vs Sizebay: Size Recommendation Compared

ZeDaq.ai and Sizebay both recommend sizes to online shoppers, but they collect different information. ZeDaq.ai measures the shopper from one photo plus their height and matches the result to your size chart, while Sizebay's size recommendation asks for height, weight and age.

ZeDaq.ai publishes this blog, so we have kept to facts from each company's own public pages. Sizebay details were checked November 2026. Products change, so confirm current details on each site before you decide. For a wider view of the market, see our roundup of AI try-on apps for Shopify.

What does Sizebay offer?

Sizebay describes its Size & Fit product as "The world's leading size recommendation tool" on its homepage (checked November 2026). Under Size & Fit, it lists virtual try-on for clothes, virtual try-on for shoes, and size charts.

It also has a second product group called Fashion Hub. On the same homepage, Fashion Hub includes:

• Fashion Hint, which recommends visually similar and complementary products using image analysis.
• Fashion Image Search, which lets shoppers search with a click or an uploaded photo.
• Fashion Looks, which uses interactive avatars to show outfit combinations.

How does Sizebay's size recommendation work?

According to Sizebay's virtual fitting room page (checked November 2026), shoppers enter their height, weight and age. A body profile step then confirms or adjusts how weight is distributed on the body, and shoppers can check how other sizes would fit them.

The same page says a specialized patternmaking team analyzes the real measurements of each garment and cross-references them with anthropometric data. It also says size charts are created and managed by Sizebay's fashion specialists.

For shoes, Sizebay says it cross-references foot shape with size history across other brands.

Does Sizebay offer photo try-on?

Yes, as an add-on. The virtual fitting room page describes an exclusive Try-on add-on with photo upload to see the product on your own body, plus real-time try-on through a phone camera. Its size recommendation itself is based on the shopper's answers, not a photo.

Which platforms does Sizebay support?

The virtual fitting room page says the tool integrates with all platforms through Google Tag Manager or API. It names Nuvemshop, VTEX, Shopify, Magento, WooCommerce and proprietary platforms, and mentions integration with a single line of JavaScript.

On the Shopify App Store, Sizebay lists an app called Sizebay Tracking Pixel (checked November 2026). The listing describes it as a tool for tracking Virtual Fitting Room results, and its pricing is shown as free.

How is Sizebay priced?

Sizebay doesn't publish prices on the pages we checked. Its virtual fitting room page says plans vary by traffic volume and the categories covered, and that implementation is included in the contracted plan. Its homepage directs merchants to schedule a demo.

What does ZeDaq.ai offer?

ZeDaq.ai offers AI virtual try-on and Find my size sizing for fashion stores, plus tools for tailors.

Here is how sizing works for the shopper:

1. They tap Find my size on your product page.
2. They upload one photo and enter their height.
3. The measurement runs on their own device.
4. Their measurements are matched to your own size chart for that garment type.
5. If they fall between two sizes, the scan suggests the larger one.

You enter your own charts, one per garment type: tops, outerwear, dresses and bottoms. If you haven't added one, a generic UK, US, EU or AU chart is used.

The same widget includes Try it on, where the shopper uploads a photo and sees your real garment on their body. ZeDaq.ai also offers live-camera try-on for eyewear.

Which platforms does ZeDaq.ai support?

ZeDaq.ai works in three ways:

• Shopify app, installed from the ZeDaq.ai App Store listing.
• Script tag for WooCommerce, Wix, Squarespace and custom sites, with a key locked to your store's domain.
• REST API for teams building their own interface.

How is ZeDaq.ai priced?

ZeDaq.ai publishes its prices on its pricing page:

Plan	Price
Free	$0 (3 try-ons and 3 measurements a month)
Micro	$14/mo
Starter	$49/mo
Growth	$129/mo
Scale	$299/mo

Every paid plan has a 3-day free trial with no card required.

How do ZeDaq.ai and Sizebay compare at a glance?

	ZeDaq.ai	Sizebay (checked November 2026)
Size recommendation input	One photo plus height	Height, weight and age, plus a body profile step
Whose size chart	The store's own chart, one per garment type	Charts created and managed by Sizebay's specialists
Between sizes	Suggests the larger size	Shoppers can check how other sizes would fit
Photo try-on	Included in the widget	Offered as a Try-on add-on
Shoe sizing	Not offered	Offered
Eyewear try-on	Live camera	Not listed on the pages checked
Product discovery tools	Not offered	Fashion Hint, Fashion Image Search, Fashion Looks
Platforms	Shopify app, script tag, REST API	Google Tag Manager or API; names Shopify, VTEX, Nuvemshop, Magento, WooCommerce
Pricing	Published plans from $0	Not published; varies by traffic and categories
Tailor tools	CRM, measurement links, orders, invoices	Not listed on the pages checked

Sources for Sizebay: its homepage and virtual fitting room page.

How do their sizing methods differ in practice?

The biggest difference is what the shopper is asked to provide, and who builds the size chart.

Questionnaire vs photo

A questionnaire like Sizebay's asks for numbers most shoppers already know: height, weight and age. That is quick and needs no photo.

A photo scan like ZeDaq.ai's asks for one photo and height. It measures the body directly, so the shopper doesn't need to know their weight. Some shoppers prefer not to share a photo, while others prefer not to share their weight. It is worth thinking about which your customers would choose.

Store chart vs managed chart

With ZeDaq.ai, you enter your own size chart, so you control the labels and ranges. That suits brands with a clear chart and staff who can maintain it.

Sizebay says its specialists create and manage size charts. That suits brands that want an outside team to handle chart work.

A worked example: sizing one pair of trousers

Imagine a shopper looking at tailored trousers on your store.

With a questionnaire flow like the one Sizebay describes, she types her height, weight and age, then confirms her body profile. She doesn't need a photo, but she does need to be comfortable sharing her weight.

With ZeDaq.ai, she taps Find my size, uploads one full-length photo and types her height. Her measurements are matched to your bottoms chart, and she sees one label from it. If she sits between two sizes, she sees the larger one.

Both flows end with a size. The question for you is which inputs your shoppers will happily give, and whose chart you want behind the answer.

The guide to how AI size recommendation works explains the photo-scan method in more depth.

Which tool suits which store?

Neither tool is right for every store. Here is a neutral way to think about it.

Sizebay may suit you if:

• you sell shoes as well as clothing and want sizing for both
• you want an outside team to create and manage your size charts
• you want product discovery tools such as visual search
• you run on a platform Sizebay names, such as VTEX or Nuvemshop

ZeDaq.ai may suit you if:

• you want sizing from a photo, matched to your own chart
• you want try-on and sizing in one widget
• you want to see prices before talking to sales
• you want to start on a free plan
• you also run a tailoring or made-to-measure business

What should you ask both vendors?

Use these questions in any demo or trial:

1. Which shopper inputs do you collect, and how is that data stored?
2. Whose size chart is used, and who updates it when a style changes?
3. What happens when a shopper is between sizes?
4. How do you install on our platform, and how long does setup take?
5. How is pricing calculated as our traffic grows?
6. Can we test on our own products before we pay?

If you are comparing other tools too, our articles on ZeDaq.ai vs Virtusize and ZeDaq.ai vs GenLook use the same approach.

FAQs

Does Sizebay use a photo for size recommendation?

Not according to its virtual fitting room page, checked November 2026. Its size recommendation uses height, weight and age, while photo upload is part of a separate Try-on add-on.

Does ZeDaq.ai ask for the shopper's weight?

No. Find my size uses one photo and the shopper's height.

Does ZeDaq.ai offer shoe sizing?

No. ZeDaq.ai sizes clothing using charts for tops, outerwear, dresses and bottoms. It offers live-camera try-on for eyewear.

Can I see Sizebay's prices online?

Not on the pages we checked in November 2026. Sizebay says plans vary by traffic volume and categories, and it invites merchants to book a demo.

Can I use my existing size chart with ZeDaq.ai?

Yes. You enter your own chart in the dashboard or the Shopify app, one per garment type. The shopper then gets a size in your own labels.

Is there a Sizebay app on the Shopify App Store?

Yes. Sizebay lists the Sizebay Tracking Pixel app, which it describes as a way to track Virtual Fitting Room results.