Alternatives · Sizebay
Sizebay alternatives for Shopify: self-serve options compared
Sizebay is a virtual fitting room sold mostly through its own team: size recommendations from a shopper's height, weight and age, with try-on as an add-on and plans quoted on request. If you want to install and price an app yourself, alternatives include Virtusize and Measmerize for sizing, and Rendered Fits, Woven Looks or AI Frame for sizing with photo try-on.
Disclosure: Rendered Fits publishes this page and is one of the alternatives. The facts below come from public Shopify App Store listings and vendor websites checked on 21 October 2026; we have not tested image or recommendation quality side by side. Listings change, so check them before you decide.
By the Rendered Fits team · Listings checked 21 October 2026
Sizebay at a glance
| From the listing | |
|---|---|
| Developer | Sizebay (Austin, Texas; founded 2014) |
| What it does | Size recommendations from height, weight and age, with size charts managed by its team; try-on as an add-on; separate outfit and similar-item tools on its website |
| Plans | The listing says "Free"; its website says plans vary by traffic and categories and are quoted by a specialist |
| Setup | Its website says implementation averages 30 days from contract to go-live, with its team doing most of the work |
| Rating | No reviews yet on the Shopify App Store |
| Launched on Shopify | June 2026 |
| Built for Shopify badge | No |
| Listing | Sizebay ‑ Virtual Fitting Room on the Shopify App Store |
Reasons to look at alternatives
- You want public prices and to start the same day, without a sales call.
- You want try-on included rather than sold as an add-on.
- You want size recommendations from your own size chart rather than a chart managed by the vendor.
Sizebay alternatives compared
Monthly prices in USD as each listing showed them on 20 or 21 October 2026.
| App | What it does | Free plan | Paid from |
|---|---|---|---|
| Virtusize | Size recommendations, fit visualisation | No ($1 first month) | $39 (200 orders) |
| Measmerize | 3D size recommender, size charts | No (14-day trial) | $49, adjusts with orders |
| AI Frame | Size charts, size recommender, photo try-on | 10 try-ons, 10 charts | $19.99 (80 try-ons) |
| Woven Looks | Photo try-on, size recommendations, outfits | 25 try-ons | $399 (1,000 try-ons) |
| Rendered Fits | Size recommendations, outfits sized per item, photo try-on | 1 product sized, 5 try-ons a month | $349 (1,000 try-ons) |
See all 17 apps, with top plans, ratings and launch dates, in our Shopify try-on app comparison.
Rendered Fits vs Sizebay
| Sizebay | Rendered Fits | |
|---|---|---|
| What it does | Size recommendations; try-on add-on | Size recommendations, outfits sized per item, photo try-on |
| Pricing | Quoted on request | Free; Complete $349 (1,000 try-ons); Enterprise $999 (5,000) |
| Setup | About 30 days with its team, by its website | Install from the Shopify App Store and switch it on in the theme editor |
| Size data | Charts built and managed by its specialists | Your own size chart and fit notes |
When Sizebay is the better choice
Sizebay is the better choice if you want a managed service: its team builds and maintains your size charts from garment measurements, it supports 35 languages on its listing, and it covers footwear, lingerie and kids as well as apparel. For larger retailers that prefer a hands-off rollout, that can be worth a quoted contract.
When Rendered Fits is the better choice
Rendered Fits is the better choice if you want to install and see it working on your own products today, with public prices. It recommends a size from your own chart for each product, sizes every piece of a suggested outfit, and includes photo try-on in every plan. See the shopper journey or see pricing.
About Rendered Fits. Rendered Fits is a Shopify app for fashion brands that recommends a size for supported products from the brand's own size chart, and can show shoppers an optional AI try-on preview. There is a Free plan, and Complete is $349 a month with a 14-day trial.
How to choose
- Decide which question your shoppers most need answered: "how will it look on me?", "which size?", or "what goes with it?".
- Shortlist two or three apps whose listings cover that question, and install their free plans or trials on the same products.
- Run the full journey on a phone, from product page to cart, and judge size advice separately from how realistic any image looks.
- Compare conversion and returns over the same period, not vendors' headline claims.
What Shopify merchants say about Rendered Fits
★★★★★ 5/5 ·
“Sienna & Sidney have been very responsive and adaptable to our needs. Its early days but first signs are that browsers are using the technology and it is contributing towards increased sales.”
Really Wild Clothing Company, United Kingdom · Shopify App Store review★★★★★ 5/5 ·
“Our partnership has significantly enhanced the customer shopping experience, resulting in increased sales and measurable value for our business. The team has been exceptional to work with—reliable, collaborative, and consistently committed to delivering high-quality service”
University of St Andrews Shop, United Kingdom · Shopify App Store reviewRead Rendered Fits reviews · See the reviews on the Shopify App Store
Frequently asked questions
What is a good alternative to Sizebay on Shopify?
Virtusize and Measmerize are self-serve sizing apps with published prices. Rendered Fits, Woven Looks and AI Frame combine size recommendations with photo try-on.
How much does Sizebay cost?
Its Shopify listing shows "Free", but its website says plans vary with traffic and categories and are quoted by a specialist. No public prices were found on 21 October 2026.
Which Shopify app is Sizebay's fitting room?
The fitting room listing is "Sizebay - Virtual Fitting Room" at apps.shopify.com/sizebay-fit-finder. The app at apps.shopify.com/sizebay is its tracking pixel.
More comparisons: all alternatives · 17 Shopify try-on apps compared · Rendered Fits pricing