ItemFits: Products & Spaces vs Smart Size AI Fit Recommender
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 9, 2026.
The short answer
- Smart Size AI Fit Recommender is detected on 20× as many Shopify stores as ItemFits: 20 vs 1 as of Nov 9, 2026.
- Both list a free plan. Paid plans start at $99/month for ItemFits and $29/month for Smart Size AI Fit Recommender.
- Smart Size AI Fit Recommender lists 8 features ItemFits’s listing doesn’t mention, including Custom CSS, Custom icons, Custom text.
Head to head
- United States
- United States
- Canada
- Australia
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free 2-day trial
- · 2-day trial of PRO tier features
- · Default branding + email support
Starter
- · 1,000 explanations + 500 checks/mo
- · Door, room, hall, stair + elevator
- · Full analytics + conversation replay
- · Per-variant sizes (Queen vs King)
- · Product suggestions + store chat
- · Up to 1,000 products / 5,000 variants
Growth
- · 2,000 explanations + 750 fit checks/mo
- · Everything in Starter
- · Export fit-check data (CSV)
- · Pick fit alternatives by product
- · Staff Fit Finder: up to 50 matches per s
- · Up to 5,000 products / 10K variants
Pro
- · 4,000 explanations+ 1,500 fit checks/mo
- · Everything in Growth
- · Priority support
- · Staff Fit Finder with unlimited matches
- · Up to 10 fitting options in cart
- · Up to 10,000 products / 30,000 variants
Free
- · Max support response time: 24 hours
- · Recommendation to 50 unique users/month
Lite
- · 250 unique users/month
- · Max support response time: 12 hours
- · Support via chat, email or call
- · USD 0.12 per additional visitor
Starter
- · 0.10 per additional visitor
- · 500 unique users/month
- · Max support response time: 12 hours
- · Support via chat, email or call
Growth
- · 1 000 unique users/month
- · Max support response time: 12 hours
- · Support via chat, email or call
- · USD 0.09 per additional visitor
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureGive shoppers a “Will It Fit?” check directly on your product pages, cart or via a site-wide explanation engine. ItemFits uses product dimensions from your catalog and lets customers check doors, hallways, vehicles, stairs, elevators, rooms, and other tight spaces before buying.
SmartSize AI Fit & Size Recommender helps shoppers find their perfect size in seconds. With just a few questions, our AI model finds the best fit for every product, even across different brands and all Shopify stores using SmartSize. Returning customers see instant size suggestions. It’s the perfect complement to your size charts, creating a confident shopping experience.
- Adds fit checks to every product page for doors, stairs, rooms, and vehicles
- Checks multi-item carts against one shopper-defined space before checkout
- Suggests fitting alternatives when a product won’t fit a shopper’s space
- Answers natural-language fit questions through sitewide shopper chat
- Sleek and mobile responsive quiz to capture key sizing info in just a few clicks
- Fully customizable button and accent color to match your brand’s style.
- One-time quiz gives store-wide size recommendations for a seamless experience.
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 |  ItemFits |  Smart Size AI Fit Recommender |
|---|---|---|
| Detected stores | 1 | 20(ahead) |
| 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 | Baby & Toddler | Apparel & Accessories, Animals & Pet Supplies |
| Top store countries | United States | United States, Canada, Australia |
Reviews
| Measure | ItemFits | Smart Size AI Fit Recommender |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 6 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | ItemFits | Smart Size AI Fit Recommender |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $99/month | $29/month(ahead) |
| Longest free trial | Not listed | 14 days |
| Plans listed | 4 | 4 |
Listing
| Measure | ItemFits | Smart Size AI Fit Recommender |
|---|---|---|
| Shopify category rank | #117 | Not enough data |
| Shopify App Charts | Not on this week’s charts | #25 in Product comparison |
| Built for Shopify | No | No |
| Launched | May 7, 2026 | May 27, 2025 |
| Languages | 1 | 1 |
| Developer | ItemFits | SmartSize |
FAQ
ItemFits and Smart Size AI Fit Recommender: common questions
- Which is more popular, ItemFits or Smart Size AI Fit Recommender?
- Smart Size AI Fit Recommender is detected on 20× as many Shopify stores as ItemFits: 20 vs 1 as of Nov 9, 2026.
- Is ItemFits or Smart Size AI Fit Recommender cheaper?
- Both list a free plan. Paid plans start at $99/month for ItemFits and $29/month for Smart Size AI Fit 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?
- ItemFits lists 4 the others don’t mention, such as Analytics, Product page, Recommendations, Variants. Smart Size AI Fit Recommender lists 8 the others don’t mention, such as Custom CSS, Custom icons, Custom text, Floating chart. 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 Nov 9, 2026; 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 Nov 9, 2026. 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.