FitGenius: AI Size Recommender vs Size Buddy
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 Size Buddy.
The short answer
- Both list a free plan. Paid plans start at $9.99/month for FitGenius and $12.99/month for Size Buddy.
Head to head
- Germany
- Liechtenstein
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
- · 2 Size Charts
Pro
- · 5 Size Charts
Premium
- · Unlimited Size Charts
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.
Size Buddy adds a Find my size button to your product pages. Shoppers answer a few quick questions, like height and weight or bust and hips, and get a size from your own size chart, with a clear explanation of how it fits. Start from a template for tops, bottoms, dresses, bikini tops or one pieces, adjust each size with sliders, and test any shopper before you save.
- 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
- Automatic size recommendations by category and fit style
- Fully editable size ranges to match your brand’s sizing chart
- Simple setup with instant integration into product pages
- Customizable fit options: slim, regular, or loose styles
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 |  Size Buddy |
|---|---|---|
| Detected stores | Not published | 4 |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Apparel & Accessories |
| Top store countries | Not published | Germany, Liechtenstein |
Reviews
| Measure | FitGenius | Size Buddy |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | FitGenius | Size Buddy |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $9.99/month(ahead) | $12.99/month |
| Longest free trial | Not listed | Not listed |
| Plans listed | 4 | 3 |
Listing
| Measure | FitGenius | Size Buddy |
|---|---|---|
| Shopify category rank | #195 | #131 |
| Shopify App Charts | Not on this week’s charts | #9 in Product display - Other |
| Built for Shopify | No | No |
| Launched | Apr 8, 2026 | Oct 17, 2025 |
| Languages | 1 | 1 |
| Developer | Fitgenius | Appify Labs |
FAQ
FitGenius and Size Buddy: common questions
- Is FitGenius or Size Buddy cheaper?
- Both list a free plan. Paid plans start at $9.99/month for FitGenius and $12.99/month for Size Buddy. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- 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 Size Buddy; 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 Size Buddy. 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.