FitGenius

FitGenius, officially listed on the Shopify App Store as FitGenius: AI Size Recommender, is a Shopify app in the Product comparison category. Sizing uncertainty is a top cause of returns and abandoned carts. FitGenius adds a size recommendation widget to product pages: shoppers answer 3 quick questions on height, build, and fit preference, and get a recommendation with a confidence score and reasoning. Unlike static size charts, recommendations are specific to each product. Build size charts from templates, CSV, or manual entry. The analytics dashboard shows which products cause the most sizing uncertainty.

FitGenius offers a free plan and 3 paid plans starting at $9/month and going up to $24.99/month. The free plan includes 5 recommendations per month and 1 size chart, rule-based engine. The paid plans unlock advanced features beyond what's available on the free tier.

Yes — FitGenius offers a free plan alongside paid options. The free plan includes 5 recommendations per month and 1 size chart, rule-based engine. Paid plans start at $9/month for advanced features.

FitGenius launched on April 8, 2026.

FitGenius does not currently carry Shopify's Built for Shopify badge. The badge is awarded to apps that meet Shopify's published standards for performance, ease of use, and merchant value — many high-quality apps operate without it.

Merchants commonly compare FitGenius with Kiwi Size Chart & Recommender, Smart Size Chart & Fit Finder, BF Size Chart & Size Guide, and ESC Size Charts. Each alternative covers a similar use case but differs on pricing model, integration depth, and the specific themes merchants praise in reviews — see the alternatives section above for a side-by-side.