Virtusize vs Sizebay

Virtusize vs Sizebay comes down to how each tool works out a size and how you buy it. Virtusize offers visual size charts and fit comparison, with a self-serve Shopify plan, while Sizebay's size advisor asks clothing shoppers for their height, weight and age and is sold through a demo.

Both also go beyond a single size button. Virtusize adds shopper data for marketing teams, and Sizebay adds virtual try-on and image-based product discovery. For other tools in this space, including ones you can install today, see our list of top virtual try-on apps for Shopify.

All vendor facts below come from each company's own website, checked November 2026. Features and prices change, so confirm them with the vendor before you commit.

How do Virtusize and Sizebay compare side by side?

This table uses only what each vendor's live site says.

	Virtusize	Sizebay
Main sizing product	AI fit intelligence and Virtusize Table	Size & Fit size advisor
Shopper input for clothes	Fit profile; compare fit with items they own (Core plan)	Height, weight and age
Shoes	Supported on the Core plan	Foot shape and past size preferences
Visual size charts	Virtusize Table	Size Charts
Virtual try-on	Not listed	Yes, with the shopper's own photo
Extra tools	Virtusize Intelligence shopper data	Fashion Hint, Fashion Image Search, Fashion Looks
Platforms named	Shopify, Magento, WooCommerce, Salesforce Commerce Cloud, BigCommerce, custom	None named on the homepage
Public pricing	Shopify plan listed; Core is usage-based	None listed

Sources: Virtusize's homepage, Virtusize pricing and Sizebay's homepage, checked November 2026.

How does Virtusize recommend a size?

Virtusize builds a personal recommendation from fit profiles. Its site says "Shoppers get their size in under 30 seconds", according to the Virtusize homepage.

On the retailer side, you upload your size data in the format you already have, such as CSV, Excel or PDF. Virtusize's AI converts it to its own standard, so you don't need to retype your charts.

What do the Virtusize plans include?

The Virtusize pricing page lists two plans:

• Virtusize for Shopify: "$1 for the first month, then from $39 /mo". It covers apparel, with manual upload and standard usage and conversion tracking.
• Virtusize Core: "Pay as you grow", with pricing tied to Virtusize-assisted conversions. It covers apparel, bags, kids, gifts and shoes, and adds fit visualization that compares fit "on the body and items you own".

Core also includes Virtusize Table (visual size guides), Virtusize Intelligence (shopper data you can feed into your own systems) and support across web, mobile and SDK integrations. The homepage adds that enterprise plans with custom pricing are offered to brands with over 10,000 monthly orders, per Virtusize's site.

How is Virtusize set up?

The homepage says setup is two script tags and lists Shopify, Magento, WooCommerce, Salesforce Commerce Cloud, BigCommerce and custom or headless stores. It also says no setup fees and no long-term contract are required.

How does Sizebay recommend a size?

Sizebay's main product is Size & Fit, a size advisor. For clothes, the shopper gives only their height, weight and age, as described on Sizebay's website. The advisor then suggests a size.

For shoes, the site says the tool looks at foot shape and the shopper's past size preferences across brands. This makes shoes a separate flow from clothing.

What else does Sizebay offer?

Sizebay groups several tools around the size advisor:

• Virtual try-on. The shopper tries the look on with their own photo, for clothes and shoes.
• Size Charts. Listed with its try-on tools on the homepage.
• Fashion Hint. It reads product images to suggest similar and matching items.
• Fashion Image Search. Shoppers find products with one click or by uploading a photo.
• Fashion Looks. Part of the same Fashion Hub group.

The homepage doesn't name any ecommerce platforms or list prices. To get either, you book a demo.

What are the real differences for your store?

Four differences matter most when you choose between them.

1. What the shopper types. Sizebay asks three simple numbers for clothing. Virtusize can compare a new item with garments the shopper already owns, which works best when shoppers have a reference item to hand.
2. How you buy. Virtusize lists a self-serve Shopify price. Sizebay's site routes every buyer to a demo, so expect a sales call and a quote.
3. Try-on. Sizebay lists photo-based virtual try-on. Virtusize's pages focus on sizing and fit visualization, with no try-on listed.
4. Data and discovery. Virtusize sells shopper data to marketing and product teams. Sizebay leans toward discovery, with image search and outfit suggestions.

If you want to see who else competes with each, read our guides to Virtusize alternatives for fashion stores and Sizebay alternatives worth comparing.

Which questions should you ask in a demo?

Bring the same list to both vendors. That way the answers line up and you can score them fairly.

• Which platforms do you support on my stack? Virtusize names its platforms. Sizebay's homepage doesn't, so ask directly.
• How do I load my size charts? Ask whether you can upload your existing file, and how long it takes to go live.
• What does the shopper see on a phone? Ask for a live demo on a real product page, not a video.
• What happens when a shopper falls between sizes? Ask which size the tool suggests and whether it explains why.
• What do I pay at my order volume? Get a written price for your expected traffic, including any usage-based charges.
• What shopper data is stored, and for how long? Ask for their privacy terms in writing.

A worked example

Say you sell women's dresses on Shopify and most shoppers buy on mobile. You want a size suggestion and you have no developer.

Virtusize lists a Shopify plan with a public starting price, so you can work out your first-year cost before a call. Sizebay would need a demo to confirm Shopify support and price. If your shoppers would also value seeing the dress on themselves, Sizebay's try-on is a point in its favor, and worth asking about in that demo.

Now say you sell sneakers and kids' clothing on a custom-built site. Here the self-serve Shopify plan doesn't apply. Virtusize lists shoes, kids and custom or headless stores on its Core plan, which is priced on assisted conversions rather than a flat fee. Sizebay has a dedicated shoe flow based on foot shape. In this case you would book demos with both, then compare written quotes and the shopper steps on a phone.

The pattern is simple. The more categories and platforms you add, the more likely you are to need a sales conversation with either vendor.

Is there a simpler option that adds try-on and sizing together?

If you want photo-based sizing and try-on in one self-serve install, ZeDaq.ai is one option to test. Its Find my size feature uses one photo plus the shopper's height. Measuring runs on the shopper's device, and the result is matched to your own size chart, with one chart for each garment type: tops, outerwear, dresses and bottoms. When a shopper falls between sizes, it suggests the larger size.

The same widget adds AI virtual try-on, so shoppers see your real garment on their own photo. It works through the Shopify app, a script tag for WooCommerce, Wix, Squarespace and custom sites (the key is locked to your domain), or the REST API. Our guide to a virtual fitting room for clothing websites explains how the shopper flow works.

There is a Free plan for testing, and paid plans start with Micro at $14 a month. Each paid plan has a 3-day free trial, and you can compare limits on the current ZeDaq.ai plans. ZeDaq.ai is newer than both vendors and has no App Store reviews yet, so try it on your own products first.

FAQs

Does Sizebay list its prices?

No. As of November 2026, Sizebay's homepage shows no pricing and asks you to schedule a demo.

Does Virtusize work with Shopify?

Yes. Virtusize lists a dedicated Shopify plan and names Shopify among its supported platforms.

Which tool asks the shopper fewer questions?

For clothing, Sizebay says the shopper gives only height, weight and age. Virtusize's site doesn't list its exact questions, so ask for a live demo to compare the steps.

Does either tool include virtual try-on?

Sizebay lists virtual try-on with the shopper's own photo. Virtusize's site lists fit visualization against items the shopper owns, but no photo try-on.

Can I use both tools for shoes?

Both mention shoes. Sizebay uses foot shape and past size preferences, and Virtusize lists shoes on its Core plan.