Comparisons Feb 8, 2027 5 min read
Best Shopify Fit Recommender Apps
Fit recommenders predict customer's correct size from data. Best ones use AI on customer history + product fit data. Cuts returns 30-45%.
The Chart
| App | Approach | Best For |
|---|---|---|
| Tailor Size Guide AI | Customer + product data hybrid | All Shopify |
| True Fit | Style profile + brand data | Big brands (>$1M) |
| Fit Analytics | Product-only data | Mid-sized brands |
| Bold Sizing | Customer-only | Smaller stores |
| 3DLOOK | Body scan + product | Plus + premium brands |
FAQs
AI fit vs simple size chart?
Size chart = static reference. AI fit = personalized recommendation. Both useful — chart for confidence-checking, AI for the recommendation step. Use both together.
When does AI fit pay off?
Above $50K/mo apparel revenue. Below that, return reduction × app cost ROI is too small. Above that, AI fit cuts returns 35%+ which dwarfs subscription cost.
Need this on your store?
Tailor Size Guide ships pre-built size charts for Shopify.