FitGenius: AI Size Recommender vs WeeFizz Size 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, Oct 23, 2026 for WeeFizz Size Recommender.
The short answer
- Only FitGenius lists a free plan. Paid plans start at $9.99/month for FitGenius and $59/month for WeeFizz Size Recommender.
Head to head
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
Solo
- · 500 recommandations / mois
- · Marque blanche et personnalisations
- · Statistiques d'usage
Studio
- · 2000 recommandations / mois
- · Marque blanche et personnalisations
- · RDV de 30 min
- · Statistiques d'usage
Agency
- · Marque blanche et personnalisations
- · RDV de 30 min
- · Recommandations illimitées
- · Statistiques d'usage
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.
WeeFizz aide vos clients à trouver leur taille idéale en quelques secondes, sur la fiche produit. À partir de quelques informations (taille, poids, âge, morphologie) ou d'une photo, WeeFizz calcule leurs mensurations et recommande la bonne taille selon votre grille. Résultat : plus de confiance à l'achat, plus de conversion et moins de retours dus aux erreurs de taille.
- 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
- La bonne taille recommandée à chaque client, sur la fiche produit
- Moins de retours et d'échanges liés aux erreurs de taille
- Plus de confiance à l'achat et un meilleur taux de conversion
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 |  WeeFizz Size Recommender |
|---|---|---|
| Detected stores | Not published | Not published |
| 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 | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | FitGenius | WeeFizz Size Recommender |
|---|---|---|
| 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 | WeeFizz Size Recommender |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $9.99/month(ahead) | $59/month |
| Longest free trial | Not listed | 14 days |
| Plans listed | 4 | 3 |
Listing
| Measure | FitGenius | WeeFizz Size Recommender |
|---|---|---|
| Shopify category rank | #198 | #438 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Apr 8, 2026 | Sep 23, 2026 |
| Languages | 1 | 1 |
| Developer | Fitgenius | WeeFizz |
FAQ
FitGenius and WeeFizz Size Recommender: common questions
- Is FitGenius or WeeFizz Size Recommender cheaper?
- Only FitGenius lists a free plan. Paid plans start at $9.99/month for FitGenius and $59/month for WeeFizz Size 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.
- 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, Oct 23, 2026 for WeeFizz Size 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, Oct 23, 2026 for WeeFizz Size 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.