5 Best Shopify Size Chart Apps in 2026 (Tried & Tested)

Choosing the right Shopify size chart app is one of the fastest ways to cut fit-related returns and help apparel shoppers buy with confidence. In this guide, I compare the five best size chart apps on the Shopify App Store, with verified ratings, pricing, features, and real merchant feedback for each. I’m Allan Vu, E-commerce Specialist and Digital Marketing Executive at BOGOS, and I put these size guide apps through our standard testing process so you can pick the right one for your store.

TL;DR

• Best size chart app overall for most stores: MP Size Chart & Size Guide (5.0 stars, free to install, AI size recommender, Built for Shopify).
• Market leader and most established option: Kiwi Size Chart & Recommender (4.8 stars, 1,032 reviews, live since 2018).
• Best alternative for fit quizzes: Smart Size Chart & Fit Finder (4.9 stars, “Find my size” quiz, flat pricing with no order-volume fees).
• Best for hands-off setup: CSC: Size Chart & Size Guide (5.0 stars, free done-for-you chart building).
• Best budget pick: BF Size Chart & Size Guide (paid plans from $5.99/month, simple and reliable).
• A size chart app adds accurate size charts, size guides, and AI size recommendations to your product pages, which helps shoppers buy the right size and reduces fit-related returns.
• Every app below was checked against the BOGOS app evaluation process using live Shopify App Store data.

1. How I tested these apps and my top three picks

I researched every app using its Shopify App Store listing, its help documentation, its developer website, and its merchant reviews. I focused on six areas: feature depth, pricing and value, performance, customer support, review patterns, and developer track record. You can read the full method on the BOGOS app evaluation page.

I paid close attention to review patterns rather than single comments. When several merchants reported the same issue, I treated it as a real signal. I also checked recent review dates to spot any new problems with billing, bugs, or support.

Sizing gaps are common, which is why these apps matter. Baymard Institute testing found that 83% of apparel sites fail to provide sufficient sizing information, and that 90% of apparel sites get at least one sizing or fit best practice wrong. A good size chart app closes that gap. Based on these criteria, the three apps I recommend most are:

Best overall: MP Size Chart & Size Guide.

It holds a 5.0 rating across 821 reviews, carries the Built for Shopify badge, and is free to install. It combines customizable size charts, 30+ templates, CSV import, automatic unit conversion, and an AI size recommender in one app. This mix of price, rating, and features makes it the best value for most stores.

Best established alternative: Kiwi Size Chart & Recommender.

It launched in 2018 and holds the largest review base in the category, with 1,032 reviews at a 4.8 rating. It remains a deep, proven size guide app with an AI size recommender and flexible chart building, so it suits stores that want a widely used tool with a long track record.

Best for fit quizzes: Smart Size Chart & Fit Finder.

It is Built for Shopify, holds a 4.9 rating, and centers on a “Find my size” quiz that predicts a shopper’s size without a tape measure. It uses flat pricing with no order-volume charges, so it suits stores that want a guided size recommender over the largest chart library.

2. Essential features to look for in a size chart app

A strong size chart app does more than show a table. Look for the features below when you compare options.

• Chart types and templates: Your app should support the product types you sell, from shirts and dresses to shoes, rings, and pet gear. Pre-built templates speed up setup. Most top apps ship templates for men, women, kids, and pets.
• AI size recommendations and fit quizzes: An AI size recommender or fit quiz guides shoppers to the right size before checkout. This feature directly targets fit-related returns. Kiwi, MP, SmartSize, and CSC all offer some form of size recommendation.
• Unit conversion and international sizing: Automatic cm and inch conversion helps global shoppers read your charts. International size mapping matters if you sell across the US, UK, EU, and Asia. Look for automatic unit switching based on the shopper’s location.
• Customization and theme compatibility: The size guide should match your brand and load cleanly on your theme. Theme app blocks and no-code editors make placement easy on Shopify 2.0 themes. Custom colors, fonts, and button styles keep the chart on brand.
• Bulk import, auto-assignment, and analytics: CSV import and image upload save hours if you manage many charts. Auto-assignment rules apply the right chart to products by collection, vendor, or type. Built-in analytics show how often shoppers open your charts.

3. The best Shopify size chart apps reviewed

The table below compares all five apps at a glance. A full review of each app follows, covering who it suits, pricing, ratings, key features, pros and cons, and what merchants say.

Ratings, review counts, and prices are taken from each app’s Shopify App Store listing in July 2026 and may change over time.

#1 Kiwi Size Chart & Recommender

️🏆 Best for: Stores that want the most established size chart app with a large, proven user base.

• Pricing: Free plan available. Paid plans run $6.99–$24.49/month (higher tiers add order-volume charges).
• Reviews: 4.8★ (1,032 reviews)

Kiwi has been a category leader since 2018. It combines customizable size charts with an AI size recommender and supports many product types. The app is built by Staytuned and remains one of the most installed size guide apps on the Shopify App Store.

Key features:

• Customizable, responsive size charts with tables, images, videos, and tabs.
• AI-powered size recommendations to guide shoppers to the right fit.
• Import charts from images, product descriptions, or CSV.
• Product- and collection-based size guides that auto-apply to new products.
• Automatic unit switching based on the customer’s location.

Pros and cons

Merchant reviews

Merchants praise Kiwi for responsive size tables, cm and inch unit switching, and high configurability across product types. Support is a common highlight, with reviewers noting fast help during theme conflicts. The main recurring concern involves data portability and cost creep on higher-volume plans, so review the plan limits before you scale.

#2 MP Size Chart & Size Guide

️🏆 Best for: Stores that want the best overall balance of price, rating, and features.

• Pricing: Free to install. Paid plans run $6.95–$24.95/month.
• Reviews: 5.0★ (821 reviews)

MP Size Chart & Size Guide, formerly Avada Size Chart, is built by Shoppaza. It carries the Built for Shopify badge and is free to install. The app pairs customizable size charts with an AI size recommender and a dedicated size guide page.

Key features:

• AI-powered size recommendations to reduce returns.
• 30+ industry templates with images, videos, tabs, and tables.
• CSV import for unlimited size charts.
• Automatic unit conversion and support for 20+ languages.
• One auto-synced size guide page that lists all charts.

Pros and cons

Merchant reviews

Merchants consistently praise the support team for fast, hands-on help, including custom chart styling and theme setup. The bulk upload feature is a frequent positive, since it saves time for large catalogs. Reviews report smooth setup and reliable display across themes, with very few complaints.

#3 Smart Size Chart & Fit Finder

️🏆️ Best for: Stores that want a guided “Find my size” quiz and predictable pricing.

• Pricing: Free plan available. Paid plans run $9–$19/month (fit quiz on the $19 plan).
• Reviews: 4.9★ (132 reviews)

SmartSize focuses on turning sizing into a guided experience. Its fit finder asks shoppers a few questions and predicts their size, then remembers the answer across products. The app is Built for Shopify and is developed in Nuremberg, Germany.

Key features:

• “Find my size” AI fit quiz with customer measurement memory.
• Templates for adults, lingerie, kids, and pets.
• Multi-language charts and quizzes in 25+ languages with AI translation.
• Drag-and-drop chart builder with automatic or floating button placement.
• International size mapping with automatic cm and inch conversion.

Pros and cons

Merchant reviews

Merchants report fewer sizing questions and higher confidence after adding SmartSize. The prediction quiz is a common favorite, along with easy setup and clean design. Support earns repeated praise for custom solutions and quick replies.

#4 CSC: Size Chart & Size Guide

️🏆 Best for: Merchants who want the app team to build their first charts for them.

• Pricing: Free plan available. Paid plans run $6.99–$29.99/month.
• Reviews: 5.0★ (87 reviews)

CSC, by TaskHusky, focuses on ease of setup and support. It offers AI size charts, fit recommendations, and one-click chart generation from your product data. The app is Built for Shopify and includes a free done-for-you setup service.

Key features:

• Done-for-you setup that builds your first size charts for free.
• AI size recommendations and one-click chart generation.
• 18 templates for shirts, pants, dresses, shoes, and rings.
• Auto-assign rules by collection, vendor, or product type.
• Automatic unit conversion and translations.

Pros and cons

Merchant reviews

Merchants highlight how easy the app makes chart creation and management, and they credit it with reducing size-related returns. The clean, on-brand design earns praise on both desktop and mobile. Support, often named as Zachary and the team, is a recurring highlight for fast fixes and setup help.

#5 BF Size Chart & Size Guide

️🏆 Best for: Budget-focused stores that want a simple, reliable size chart app.

• Pricing: Free plan available. Paid plans run $5.99–$11.99/month.
• Reviews: 4.7★ (127 reviews)

BF Size Chart & Size Guide, formerly Best Fit, is built by Relentless Apps and has been live since 2018. It focuses on clean, simple size charts rather than AI features. The app is Built for Shopify and suits stores that want sizing tables without extra tools.

Key features:

• Simple, customizable size charts with text and image boxes.
• Smart charts based on collections and product tags.
• cm and inch measurement conversion on the top plan.
• Multiple size charts per product.
• Mobile-friendly display with no watermark on any plan.

Pros and cons

Merchant reviews

Merchants recommend BF for its simplicity, value, and easy integration into product pages. Support earns repeated praise for quick, helpful replies. The main recurring complaint comes from stores with large chart libraries, who want a way to search or sort their charts.

4. How to choose the right size chart app for your store

Match the app to your store size and needs. The right size guide app depends on your budget, your catalog, and whether you want AI features.

Choose MP Size Chart & Size Guide if you want the best overall value and a high-rated, free-to-install app. Choose Kiwi if you prefer the most established option with the largest user base. Choose SmartSize if a guided fit quiz is your priority.

Pick CSC if you want the app team to set up your charts for you. Pick BF if you want the lowest paid price and a simple, no-frills size chart. If you sell across many regions, prioritize automatic unit conversion and international sizing in whichever app you choose.

Conclusion

The best Shopify size chart app for most stores is MP Size Chart & Size Guide, thanks to its 5.0 rating, free-to-install pricing, and AI size recommender. Kiwi remains the most established choice with the largest user base, and SmartSize is the strongest option if you want a “Find my size” fit quiz. CSC is ideal for hands-off setup, and BF is the best budget pick.

All five apps offer a free plan or free install, so you can test one on your store before you commit. Start with the pick that matches your budget and product range, then measure the change in sizing questions and returns.

FAQs

Do I need a size chart app, or can I use Shopify’s built-in options?

Shopify does not include a dedicated size chart tool, so most merchants add sizing details manually in product descriptions or theme edits. A size chart app is faster to manage, applies charts across many products at once, and adds features like unit conversion and AI size recommendations that manual methods cannot.

Do size chart apps slow down my store?

Well-built apps have a small performance impact, and the four Built for Shopify apps in this guide meet Shopify’s performance standards. To keep your store fast, use one size chart app rather than several, and remove any app you stop using.

Can a size chart app really reduce returns?

A size chart app cannot guarantee fewer returns, but it targets the main cause of fit-related returns: shoppers who are unsure of their size. Clear charts, unit conversion, and AI size recommendations help customers choose correctly the first time, which can lower return rates over time.