FitGenius: AI Size Recommender vs Kiwi Size Chart & Recommender
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for FitGenius, Nov 8, 2026 for Kiwi Size Chart & Recommender.
The short answer
- Both list a free plan. Paid plans start at $9.99/month for FitGenius and $7.99/month for Kiwi Size Chart & Recommender.
- Kiwi Size Chart & Recommender lists 37 features FitGenius’s listing doesn’t mention, including AI recommendations, Analytics, Collection page.
Head to head
- United States
- United Kingdom
- India
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 1 size chart, rule-based engine
- · 5 recommendations per month
Basic
- · 500 recommendations, unlimited charts
Pro
- · 5,000 recs, AI engine, photo analysis
Enterprise
- · 25,000 recs, priority support, API
Free Plan
- · Choose from 22 Pre-built Templates
- · Fully Customizable Design
- · Import Charts via Product Description
- · Kiwi Watermark Included
- · Publish Up to 3 Size Charts
- · Responsive, Dynamic Size Charts
Premium
- · Advanced Layout & Design Options
- · Auto-translate charts in: EN, ES
- · Everything on FREE, PLUS:
- · Google Analytics Integration
- · No Kiwi Watermark
- · Publish Up to 10 Size Charts
Plus (Popular)
- · Auto-translate: EN, ES, NL, FR, DE, IT
- · Create Up to 10 Custom Size Recommenders
- · Everything on Premium, PLUS:
- · Publish Up to 20 Size Charts
- · Size Recommender Performance Analytics
Ultimate
- · Auto-translate into 22 languages
- · Everything on Plus, PLUS:
- · Unlimited Size Charts
- · Unlimited Size Recommenders
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureSizing 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.
When customers aren't sure about sizing, they hesitate, or return their order, which gets costly during the holidays. Kiwi helps you remove that uncertainty with customizable size charts, size guides and AI-powered fit recommendations that guide shoppers to the right choice. More confident purchases and fewer returns. Add size charts and smart recommendations to any product, from apparel to more.
- Instant size recommendations via a measurement-based engine or AI analysis
- Create size charts from templates, CSV import, or manual entry
- Analytics dashboard showing recommendation volume, size distribution, and trends
- Import size charts from images, webpage, or CSV. Or, simply build your own
- Size recommender for clothes or for products where you can't predict body size
- Add multiple size tables, images, videos, tabs, and more to your size charts
- Create a product or collection-based size guides that auto-apply to new products
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  FitGenius |  Kiwi Size Chart & Recommender |
|---|---|---|
| Detected stores | Not published | 7,751 |
| Net store change, 28 days | 0 | −212 |
| Stores added, 28 days | Not enough data | 19 |
| Big-brand share | Not enough data | 21% |
| Top store categories | Not published | Apparel & Accessories, Sporting Goods, Home & Garden |
| Top store countries | Not published | United States, United Kingdom, India |
Reviews
| Measure | FitGenius | Kiwi Size Chart & Recommender |
|---|---|---|
| App Store rating | Not published | 4.7 ★ |
| App Store reviews | Not published | 1,244 |
| New reviews, 28 days | Not enough data | 4 |
| Reviewers a year or more in | Not enough data | 14% |
Pricing
| Measure | FitGenius | Kiwi Size Chart & Recommender |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $9.99/month | $7.99/month(ahead) |
| Longest free trial | Not listed | 14 days |
| Plans listed | 4 | 4 |
Listing
| Measure | FitGenius | Kiwi Size Chart & Recommender |
|---|---|---|
| Shopify category rank | #195 | #11(ahead) |
| Shopify App Charts | Not on this week’s charts | #87 on the Shoplist 100 |
| Built for Shopify | No | No |
| Launched | Apr 8, 2026 | Mar 5, 2018 |
| Languages | 1 | 1 |
| Developer | Fitgenius | Staytuned |
FAQ
FitGenius and Kiwi Size Chart & Recommender: common questions
- Is FitGenius or Kiwi Size Chart & Recommender cheaper?
- Both list a free plan. Paid plans start at $9.99/month for FitGenius and $7.99/month for Kiwi Size Chart & Recommender. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- Kiwi Size Chart & Recommender lists 37 the others don’t mention, such as AI recommendations, Analytics, Collection page, Color and font. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026 for FitGenius, Nov 8, 2026 for Kiwi Size Chart & Recommender; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026 for FitGenius, Nov 8, 2026 for Kiwi Size Chart & Recommender. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.