Rendered Fits Alternatives
The Fit Analytics Alternative for Shopify Brands
As featured in Vogue College of Fashion · The Jockey Club Style Awards
Fit Analytics is one of the best-known names in apparel sizing. Its Fit Finder recommends sizes using machine learning built on shopper preferences, sales and returns records and a database of body scans, and it now also offers an AI shopping assistant. It is sold to retailers through its own team rather than as a self-serve Shopify app.
Fit Analytics facts checked 15 October 2026 on fitanalytics.com.
Where the two differ
- What the size is built from. Fit Analytics leans on sales and returns data, which is a real advantage for a retailer with a large order history. Rendered Fits works from the shopper’s details against each garment’s own size chart, so it answers from your first day.
- How you get started. Rendered Fits installs from the Shopify App Store on a published monthly price: Complete is $349 a month with a 14-day trial, Enterprise $999 a month.
- More than the size. Rendered Fits adds Complete the Look and an optional photoreal try-on on the shopper’s own photo, in the same app and on the same product page.
We are not going to promise you fewer returns. Nobody can promise that before they have seen your cohorts, and anyone who does is guessing with your money. What we will promise is on this page instead.
What Rendered Fits actually is
A Shopify sizing intelligence app for clothing brands, built to tackle the returns and lost sales that come from customers guessing their size. A shopper puts in their measurements, gets a bespoke size for that specific garment rather than a generic chart reading, and then has the option to see it on themselves before they buy.
Questions merchants ask
What is the best Fit Analytics alternative for a Shopify brand?
Rendered Fits, for Shopify clothing brands that want sizing from their own size charts that works from day one, plus Complete the Look and an optional own-photo try-on, on a published monthly price.
Does Rendered Fits need order history to work?
No. The recommendation is built from the shopper’s details against your garment’s size chart, so it works from day one.
How long does setup take?
We build your range for personal sizing before you go live: size charts cleaned or generated, fit profiles backfilled and non-sizeable products classified out. Talk to us about a start date and we will give you the timeline.
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
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