SAIZ ‑ Size & Fit Recommender

Instant & accurate size recommendation for fashion products

by SAIZ · Launched: May 2022 · Free plan available.

2.0 (1) on Shopify Used by 22 Shopify stores Built for Shopify

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SAIZ: The Ultimate Product-Customer Sizing Solution

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About SAIZ ‑ Size & Fit Recommender

SAIZ combines your exact product specs with 65M+ real customer body profiles, delivering unmatched sizing accuracy at scale. Our Recommender adapts to your products, categories, and markets, offering truly personalized size recommendations and forming the foundation for powerful analytics. More than just a sizing tool, SAIZ is your all-in-one platform to reduce returns, boost conversions, and build lasting customer loyalty by solving sizing challenges across your entire value chain. Pinpoint return reasons, spot fit issues, and track trends by size & category. Learn customer body shapes and uncover sizing needs and fit preferences. Ensure fit consistency, refine sizing, and build smarter product lines. Align product, CX, and eCom teams. Make sizing your strategic advantage. Use data to drive fewer returns, higher loyalty, and better margins. Show more Show less

Last verified: July 15, 2026 · Fresh

App details

Developer: SAIZ
Category: Marketing & conversion
Pricing: Free plan available
Launched: May 2022
Rating: 2.0 (1) on Shopify

Key features

SAIZ: The Ultimate Product-Customer Sizing Solution

Integrations with:

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1 plan · starts free

Free

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 3 Shopify App Store reviews

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Definitely the best app in this space (and we've tried many). We've been using it for 8 months now and our return rates have gone down significantly. Our conversions increased because our customers get a very good indication of how our garments will fit them, and which size they need - which is quite difficult for our products (i.e. tailored suits, etc.). The best part is the analytics which give...

— saenguin

I just installed the app but can't go through the login page because I don't have an account yet and there is no option to create the account. Can you help me?

— OUR BRAND®