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  1. xpay

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  4. Smart Size Chart & Fit Finder

Smart Size Chart & Fit Finder

by SmartSize

5.0

(130 reviews)

95/100 · Well supportedBuilt for ShopifyFree plan available. Free trial available.
Best suited for merchants selling apparel or footwear who want to reduce returns through detailed size guidance.

Create AI-powered size charts, size guides and “Find my size” quizzes in minutes Build size charts, size guides and fit quizzes in minutes with SmartSize AI and our modular editor. Bulk import / export all your size charts. Upload an image or start from templates for men, women, lingerie, kids, and pets. Add multi-tabs, AI translations, unit conversion, and international sizing. Turn on “Find my size” a size recommender. Customers answer once and are remembered across products and future visits. Buttons appear in the right place automatically—or our team handles it for you. Build size charts, size guides and fit quizzes in minutes with SmartSize AI and our modular editor. Bulk import / export all your size charts. Upload an image or start from templates for men, women, lingerie, kids, and pets. Add multi-tabs, AI translations, unit conversion, and international sizing. Turn on “Find my size” a size recommender. Customers answer once and are remembered across products and future visits. Buttons appear in the right place automatically—or our team handles it for you. more Import/ export. AI size chart upload. Templates for adults, lingerie, kids, pets Find my size AI fit quiz with customer measurement memory across every product Multi-language size charts and size quiz in + 25 languages. AI translations Drag-and-drop modules, automatic or floating button placement on any theme International size mapping with dropdown and automatic cm/inch unit conversion

Copy from the Shopify App Store listing, unedited.
View on ShopifyCompare the plansSee the scorecard
Who it’s for
Product comparison
What it moves
Top line

average order value and catalog reach

What it costs
From $9/mo

free plan available · 4 tiers

How it’s supported
95/100

Well supported · from 131 reviews

What it does

Import/ export. AI size chart upload. Templates for adults, lingerie, kids, pets

Find my size AI fit quiz with customer measurement memory across every product

Multi-language size charts and size quiz in + 25 languages. AI translations

Drag-and-drop modules, automatic or floating button placement on any theme

International size mapping with dropdown and automatic cm/inch unit conversion

Plan fit
What each step up actually buys you

This developer's plans are separated by features, not by how big your store is — so there is no volume that picks a tier for you. Here is what each one adds over the one below it.

Free
Free
You start with

2 size charts

Pre-made templates men, women, kids, pet

Create from image with AI

Automatic unit conversion

International sizing

Mobile-optimized design

Starter
$9/month
Adds

Everything in Free

10 size charts

Multi-tabs on size charts

Fit scale (true-to-size bar)

Multi-language

AI translations

Growth
$12/month
Adds

Everything in Starter

Unlimited size charts

Pro 100
$19/month
Adds

Everything in Growth

AI fit quiz: Find my size

100 users/month - Unlimited fit quiz

Fit finder or men, women & kids

Fit finder for pets

AI and rule-based matching

Listed as “Free plan available. Free trial available.”. Plan contents change — confirm on the listing before you install.
Pricing
Free plan available. Free trial available.
Free

Free

Free
2 size charts
Pre-made templates men, women, kids, pet
Create from image with AI
Automatic unit conversion
International sizing
Mobile-optimized design
No watermark
Starter

$9/month

Lowest paid plan
Everything in Free
10 size charts
Multi-tabs on size charts
Fit scale (true-to-size bar)
Multi-language
AI translations
Advanced design & customization
Priority email and chat support
Growth

$12/month

Everything in Starter
Unlimited size charts
Pro 100

$19/month

Everything in Growth
AI fit quiz: Find my size
100 users/month - Unlimited fit quiz
Fit finder or men, women & kids
Fit finder for pets
AI and rule-based matching
Multi-language quiz flows
Plans as listed on the Shopify App Store. Always confirm current pricing before installing.

95

/ 100
Well supported
medium confidence

Scored on 131 merchant reviews we hold for Smart Size Chart & Fit Finder, across five checks. Every figure is computed from those reviews — expand any row to see the counts behind it.





Computed from the 131 reviews we hold, with 12-month windows measured to 2026-08. This scores the public review record — it is not a review of the software itself, and a low score often means we hold little evidence rather than poor evidence.
Review history
2022–2026 · 131 reviews read
Reviews per year
202217 reviews
202316 reviews
202430 reviews
202539 reviews
202629 reviews
What merchants say

5.0

130 reviews
5★95%
4★4%
3★0%
2★0%
1★1%
Developer replies
88%
of reviews get an answer
Reviewed at 12m+
6%
had used it a year when they wrote
From 131 reviews read. Typical reviewer had used the app for 1 months. Most merchants review in their first month, so this reflects when people write — not how long they stay.
Recent merchant reviews

The newest 8 of 130. Open one to read it in full, with the developer's reply where there is one.

SmartSize is a user-friendly and intuitive app that's easy to use. The customer service is top-notch—Leslie and Elena always go above and beyond to answer questions, explain everything clearly, and resolve any issues quickly. Their support has been outstanding, making the overall experience seamless and enjoyable. I highly recommend SmartSize!

The App is simple to use, but powerful. We have only just implemented it, but I can see customers are already engaging with it and we are confident it will dramatically reduce returns - an important issue for a DTC online women's jeans brand! Customer support is genuinely excellent - I raised a query at 11am, received a response within a minute and was on a detailed discussion call an hour later. My query solved! Best size app I have found after months of research.

Developer repliedThank you very much. It makes us truly happy to connect with merchant like you: so engaged in their business and truly wanting the best for customer. Its been a pleasure and we look forward to our future collaboration! -- The SmartSize Team Show more

So far using the Size Chart, and it is amazing - clean and customizable. In process of setting up the size quiz, but so far looking very good compared to other similar apps we have tested.

Developer repliedThank you very much! We are always very eager to receive feedback and constantly improve the experience! Its always a challenge to provide plenty of features while keeping the experience as simple as possible. Thank you again for your kind words. -- The SmartSize team Show more

I have been using Smart Size Chart and Fit Finder for our website and I am delighted using their product. Their customer support team and solution oriented approach to work really impressed me as a founder. They catered to our requirements and provided us with solutions.

Developer repliedThank you so much for this kind review. It means so much to the team to hear these words. Knowing that our effort is compensated and recognized is the best present a merchant can give us. Thank you from the bottom of our hearts! Best -- The SmartSize team Show more

This app has been soooo helpful for my store. I use the 'prediction' quiz which means customers don't need a tape measure to help them find their size. And the customisation is great. It's more important for me that customers go by waist measurement rather than hip and the app allows you to prioritise a specific measurement (in my case the waist) when it recommends their size. Love it!

Developer repliedThank you so much for your kind review! We’re really happy to hear that SmartSize has been helpful for your store, especially the prediction quiz and the ability to prioritize the measurements that matter most for your products. We’ve worked hard to keep the experience simple while still offering flexible customization, so it’s great to know this is bringing value to you and your customers. Thanks again for your support! Kind regards, - Your SmartSize team Show more

Great app so far. Easy to set up. Has drastically reduced customer questions about sizing and I believe has increased our conversation rate

Developer repliedThanks so much for sharing this! We’re really happy to hear SmartSize has been easy to set up and is already making an impact for your store. We really appreciate you taking the time to leave a review, and we’re here anytime if you need support or have ideas to make it even better! Show more

This app has reduced my 'wrong size' returns by as much as 80% Love it!

Developer repliedThank you so much for your review and sharing your experience. We are delighted to hear that you are already seeing a positive impact! Happy sizing :) -- Your SmartSize Team Show more

Smart Size has a very excellent customer care and the girl name is Leslie in the customer care team, she put in tremendous effort to resolve all the problem.

Developer repliedThank you very much for your kind review and appreciation for the work of the team ad Leslie! We are delighted to collaborate with your team and beautiful store. Kind regards -- The SmartSize Team Show more

Smart Size Chart & Fit Finder FAQ

Answered from this app's own listing and its full review record.

Best suited for merchants selling apparel or footwear who want to reduce returns through detailed size guidance.

There is a free plan, paid plans start at $9/month, and run to $19/month across 4 published tiers. Prices are as listed on the Shopify App Store and can change — confirm before installing.

Smart Size Chart & Fit Finder's plans are separated by features rather than by store size — none of the tiers is capped on a volume you could state up front. Compare what each step adds over the one below it rather than trying to size yourself into a tier.

On our scorecard Smart Size Chart & Fit Finder rates 95 out of 100 — well supported — read from 131 merchant reviews. The developer has published replies to 115 of 131 reviews. The score reflects what the review record shows, nothing more.

130 merchants have reviewed Smart Size Chart & Fit Finder, averaging 5.0 out of 5. We hold the review history from 2022 to 2026, which is what the year-by-year chart on this page is built from.

Quick facts
At a glance
Merchant rating

5.0 / 5 · 130 reviews


Rating, last 12 months

4.88 from 43 reviews


New reviews, last 12 months

43 (was 44)


Developer replies

115 of 131 reviews


Typical reviewer had used it

1 months


Pricing

Free plan available. Free trial available.


On the App Store since

January 28, 2022


Review history held

2022 – 2026

Integrates with
Shopify Admin
Color Swatch King: Variants
Gempages
Sidekick

Categories
Product comparisonProduct variants
Will AI shoppers find this store?

Apps like this one convert the traffic you already have. Getting recommended by ChatGPT and Perplexity is a separate problem.

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