Fit3D, Inc is a Shopify app developer that makes WAIR Size & Fit Recommendation, a 3d/ar/vr app on the Shopify App Store. It provides size recommendations for apparel shoppers. Among the 15,394 Shopify brands over $5M that dtcmvp tracks, 71 (0.5%) run WAIR Size & Fit Recommendation, more than any other 3D/AR/VR app. Its share is highest among Fashion & Apparel (1.5%) brands. It is rated 4.7 out of 5 from 33 reviews on the Shopify App Store. It carries Shopify's Built for Shopify badge. WAIR Size & Fit Recommendation has 1 plan on the Shopify App Store, at $125 a month. Some plans add usage charges on top, listed with each plan.
Overview
Fit3D, Inc. DBA WAIR sells AI size and fit recommendation software for online stores. It gives shoppers a size suggestion based on predicted body measurements and a fit engine, to address sizing uncertainty that leads to abandoned sessions, returns and bracketing. It also provides reporting and analytics on sizing for design and merchandising.
- Built for
- Online fashion and apparel brands and retailers that sell on Shopify and want to reduce sizing uncertainty and returns.
- Pricing
- The App Store listing shows a free plan and a WAIR Standard plan at $125/month, which includes the first 250 WAIR orders. After that, each WAIR Enabled Order costs $0.50.
Products
- WAIR Size & Fit Recommendation Shopify app that recommends a size to shoppers using predicted body measurements and a fit engine.
- Size Recommendation Modal Shopper-facing window that shows a size recommendation.
- Custom Size Recommendation AI Size recommendation AI included in the WAIR Standard plan.
- Product Fit Reviews Fit reviews from shoppers used as a basis for size recommendations.
- Performance Reporting and Analytics Reports on how the sizing tool performs and insights for design and merchandising.
- Sizing Feedback with Shopper Body Shape Sizing feedback that includes the body shape of the shopper.
Integrations
Buyer notes
- The company says it runs the A/B experiment for the merchant to measure the effect of WAIR.
- The website describes an easy setup and a pricing model tied to return on investment.
- The listing carries the Built for Shopify badge.
- Customer Login and Request Demo options are on the website.
From Fit3D, Inc's own site and Shopify App Store listings, as of 2026-10-20.
Among Shopify brands over $5M
Share of each sector's brands running it, where that beats the overall rate.
On the Shopify App Store
WAIR Size & Fit Recommendation
4.7 · 33 reviewsBuilt for ShopifyFree planPaid from $125/moOn 0.5% of brands over $5MLaunched 20223D/AR/VRWAIR's Size Recommendation solution helps your shoppers buy the size they will love and keep based on predicted body measurements and proprietary fit engine AI.
Pricing
WAIR Standard$125/monthFirst 250 WAIR orders included ($0.50 per WAIR Enabled Order thereafter)
- Size Recommendation Modal
- Custom Size Recommendation AI
- Product Fit Reviews
- Performance Reporting and Analytics
- +1 more
Ratings, reviews, plans, prices and descriptions as the Shopify App Store lists them. how we count.
Alternatives to Fit3D, Inc
The most used 3d/ar/vr apps among Shopify brands over $5M.
| App | Brands over $5M | App Store |
|---|---|---|
| Fittingbox Virtual Try‑On · Fittingbox | 0.2% | 4.8 · 13 |
| GenLook · Genlook | 0.1% | 5.0 · 39 |
Often used with Fit3D, Inc
What its brands run more often than Shopify brands over $5M do overall.
- Yottaa Insights14.1% of its brands · 13.2x average
- Loop Returns & Exchanges54.9% of its brands · 5.5x average
- Clearer.io Address Validator18.3% of its brands · 4.9x average
- Rivo14.1% of its brands · 4.4x average
- Rise Gift Cards & Store Credit18.3% of its brands · 4.4x average
What Shopify apps does Fit3D, Inc make?
Fit3D, Inc has 1 app on the Shopify App Store: WAIR Size & Fit Recommendation.
How many Shopify brands use Fit3D, Inc?
Among the 15,394 Shopify brands over $5M that dtcmvp tracks, 71 (0.5%) run WAIR Size & Fit Recommendation, more than any other 3D/AR/VR app. Its share is highest among Fashion & Apparel (1.5%) brands.
What are the alternatives to Fit3D, Inc?
The most used 3D/AR/VR apps among Shopify brands over $5M, after Fit3D, Inc: Fittingbox Virtual Try‑On (0.2%) and GenLook (0.1%).
What do Fit3D, Inc's brands use alongside it?
Of the brands running Fit3D, Inc, 14.1% also run Yottaa Insights, 54.9% also run Loop Returns & Exchanges, 18.3% also run Clearer.io Address Validator, 14.1% also run Rivo and 18.3% also run Rise Gift Cards & Store Credit. Each is at least 4.4 times as common among them as across all brands over $5M.
How is WAIR Size & Fit Recommendation rated?
WAIR Size & Fit Recommendation is rated 4.7 out of 5 from 33 reviews on the Shopify App Store.
How much does Fit3D, Inc cost?
WAIR Size & Fit Recommendation has 1 plan on the Shopify App Store, at $125 a month. Some plans add usage charges on top, listed with each plan. WAIR Size & Fit Recommendation: WAIR Standard, $125/month (First 250 WAIR orders included ($0.50 per WAIR Enabled Order thereafter)).