Best Shopify Size Chart Apps in 2026 (Full Comparison + AI Tools)

This is a full comparison of the 10 best size chart apps in the Shopify App Store in 2026 — ranked on features, pricing, and reviews, with a separate look at which apps use AI to make building and translating charts easier.

Around 1 in 4 online apparel orders comes back, and the most common reason is the same every year: it did not fit. A good size chart app is the cheapest way to fix that, because it answers “what size should I buy?” before the shopper checks out. This guide compares every serious size chart app on the Shopify App Store so you can pick the right one for your store.

We are SmartSize, and we make one of the apps in this list. So we did two things to keep this fair. First, we ranked every app — including ours — on the same public data, and we show our exact method below. Second, we added an AI tools section. AI is changing how merchants build size charts in 2026, and the time it saves is the part most store owners ask us about.

How we ranked these size chart apps

We ranked the apps with a single composite score built from three public signals:

• 45% — Bayesian-adjusted Shopify rating. This pulls very small review counts toward the middle, so a 5.0 from 30 reviews does not beat a 4.8 from 1,000 reviews by default.
• 35% — review volume (log-scaled). More reviews mean more proof. We log-scaled it so the jump from 30 to 90 reviews matters, but the jump from 900 to 1,000 does not dominate.
• 20% — review recency. Recent reviews show the app is still supported and still works on current Shopify themes. Apps with fresh 2026 reviews score higher than apps coasting on old ones.

We used only public Shopify App Store data: listing pages, public pricing, and public review pages. We did not use agency blogs, affiliate lists, or review aggregators. Data was checked on June 6, 2026. Public review counts can move day to day, so treat each number as a snapshot.

Disclosure: SmartSize publishes this article. Our ranking runs on public review data, and by that measure we place 3rd — behind two older apps with far longer review histories. We kept ourselves in that real position. We also believe the product now leads the category after a full 2026 rebuild, and we make that case openly below so you can weigh it yourself.

The 10 best Shopify size chart apps in 2026

Here is the full ranking. Every number below was taken from the app’s public Shopify listing on June 6, 2026.

In the table, ✓ means yes and — means no or not publicly listed.

Built for Shopify is Shopify’s highest app-quality badge — it means the app meets Shopify’s top standards for speed, design, and admin integration. Eight of the ten carry it; the two without it are Kiwi and GA.

In the AI chart tools column, “—” means the listing does not publicly describe an AI tool for building or translating charts. Some of these apps offer AI size recommenders — a separate feature that suggests a size to the shopper — but this guide stays focused on the charts themselves, so we do not score recommenders here.

Note on Kiwi: Kiwi has a free plan and paid tiers up to $24.49/month. Its live pricing widget shifted during data collection, so we do not name its cheapest unlimited-chart tier with full confidence. Confirm the chart limit on its listing before you buy.

Why SmartSize leads on product — even at number 3

Our ranking runs on public review data, and that data rewards age. MP and Kiwi built their review counts over many years. SmartSize did not. We rebuilt the entire app from the ground up in early 2026, merging our size chart and sizing tools into one new product.

That rebuild is why the numbers look the way they do. SmartSize already holds a 4.9 rating, but its 128 reviews reflect months on the new app, not years. The rating shows where the product is. The review volume just has not caught up yet.

On the product itself, SmartSize is now the strongest size chart app in the store. Two things drive that:

• An editor that feels like Shopify’s own. SmartSize’s chart editor mirrors the Shopify theme editor — a structure panel on the left, a live canvas in the middle, and a settings panel on the right. If you have edited a Shopify theme, you already know how to use it. There is no new interface to learn.
• AI that removes the manual work. Upload a photo of a size chart and AI builds the table. Translate it into every market with one action. No other app in this list does both.

You do not have to take our word for it. The ranking above is honest, and the incumbents earned their review history. But if you choose on the product you will use every day — not the review count it has banked — SmartSize is built to be the one.

Which size chart apps use AI to make charts easier?

This is the part of the market changing fastest in 2026. Most size chart apps still build charts the manual way — pick a template, type in the numbers, and translate each language by hand. A smaller group now uses AI to remove that work.

For size charts, two AI tools save the most time:

• AI image-to-table import. You upload a photo or screenshot of an existing size chart, and AI reads the rows and columns and turns it into an editable table. You skip the retyping.
• AI translation. AI translates the finished chart into every language your store sells in, so each shopper reads the sizing in their own language. You do not write each version yourself.

Of the 10 apps in this list, only three describe real AI chart tools:

SmartSize is the only app here that does both AI import and AI translation. It is built to cut the manual work out of size charts from start to finish:

• AI table upload. Upload an image of an existing size chart, and SmartSize’s AI extracts the rows and columns into an editable table. A chat panel lets you refine it in plain words — “merge these two rows,” “switch to inches,” “add an XXL” — and a Revert button returns to the original at any time.
• AI translations. Translate any chart into every published store language with one action. When you change the original chart, SmartSize flags the translations that are now out of date so you can re-sync only those. Manual edits you make are protected from being overwritten.

Both of these tools unlock on the $9 Starter plan, so you do not need the top tier to get them.

CSC is the next strongest here: its AI builds a first chart from your product data, which is a real time-saver for large catalogs. Kiwi lets you import charts from images and auto-translate into up to 22 languages on its higher tiers. The other seven apps in this list build and translate charts manually.

If the slow part of size charts for you is typing them in and translating them, AI chart tools are the feature to weigh most — and that is where SmartSize is built to lead.

Every Shopify size chart app, reviewed

Below is a full review of each app, in ranked order. Each entry covers what it does, its pricing, its AI chart tools, who it suits best, and one honest watch-out from its public reviews.

1. MP Size Chart & Size Guide

Best overall on current public evidence. Developer: Shopplaza. Rating: 5.0 from 839 reviews. Pricing: Free to install; Growth $6.95/month; Pro $12.95/month; Advanced $24.95/month. Unlimited charts: $12.95/month on Pro.

MP combines a near-perfect rating with the second-largest review base in the field, and its public reviews look very current — repeated February–May 2026 feedback on the first page. The chart feature set is broad: 30+ templates, CSV import for bulk uploads, multi-language support, and analytics. Merchant feedback is unusually consistent about fast, helpful support; one review calls the team “off the charts helpful.”

AI chart tools: Not listed. MP markets AI for size recommendations, not for building or translating charts. Its charts are built from templates and CSV imports.

Best for: Stores that want the safest, most-proven all-rounder for size charts.

Watch-out: Pricing has some complexity — unlimited charts start on a paid tier, and the heavier features sit higher up the plan ladder.

View MP Size Chart on the Shopify App Store

2. Kiwi Size Chart & Recommender

The most review-proven app in the category. Developer: Staytuned. Rating: 4.8 from 1,039 reviews. Pricing: Free; Premium $6.99/month; Plus $12.49/month; Ultimate $24.49/month. Unlimited charts: available on higher tiers (see note above).

No other app here matches Kiwi’s review volume. With over 1,000 reviews and active March–May 2026 feedback, it is the category’s trust reference point. It lets you import charts from images, product descriptions, or CSV, and it can auto-translate charts into up to 22 languages on the Ultimate tier. One merchant calls its support “second to none.”

AI chart tools: Some. Auto-translate (up to 22 languages) and image-based import are available on higher tiers, though the listing does not confirm the translation is AI-driven.

Best for: Stores that weight install confidence and review history above everything else.

Watch-out: Kiwi’s public reviews carry sharper caveats than MP’s, including a visible complaint that the app would not export the data created in it. If data portability matters to you, confirm it before you commit.

View Kiwi Size Chart on the Shopify App Store

3. SmartSize — Smart Size Chart & Fit Finder

The most focused modern chart builder, and the strongest AI chart tools in this list. Developer: SmartSize. Rating: 4.9 from 128 reviews. Pricing: Free (2 charts); Starter $9/month (10 charts); Growth $12/month (unlimited charts). Unlimited charts: $12/month on Growth.

SmartSize was rebuilt from the ground up in early 2026, which is why its review count sits below the two incumbents while its rating stays high. The new app ships pre-made templates by audience — men, women, girls, boys, pets — with multiple tabs, callouts (“Runs small, size up”), fit scales, unit conversion (cm/in, kg/lb), and international size mapping. The chart editor mirrors Shopify’s own theme editor — a structure panel, a live canvas, and a settings panel — so it feels familiar from the first click, with nothing new to learn. Recent reviews praise how fast it is to set up and how flexible the charts are. Its edge is the AI built into the chart workflow.

AI chart tools: The strongest here, and they unlock from the $9 Starter plan:

• AI table upload — upload an image of an existing size chart, and AI turns it into an editable table. Refine it in plain words in a chat panel (“switch to inches,” “add an XXL”).
• AI translations — translate any chart into every published store language with one action, and re-sync only the parts that change when you edit the original.

Best for: Most apparel stores — especially anyone who wants the fastest setup, an editor they already know from Shopify, and AI that builds and translates charts for them.

Watch-out: Review depth (128) is smaller than MP’s or Kiwi’s. That is a function of the 2026 rebuild, not the product — the rating is higher than most of the field, and the recent reviews are active.

View SmartSize on the Shopify App Store

4. TablePress Size Chart & Guide

Best value if you need tables, not just size charts. Developer: Identixweb. Rating: 4.9 from 98 reviews. Pricing: Free (1 table); Basic $4.99/month; Advance $7.99/month; Unlimited Tables $9.99/month. Unlimited charts: $9.99/month (as unlimited tables).

TablePress is a no-code table builder that handles size charts, comparison tables, specification tables, and pricing tables in one tool. The rating is strong and the reviews stay active in 2026 — one says support helped “even though it was Sunday.” We treat its Unlimited Tables tier as the practical equivalent of unlimited size charts, since the product explicitly builds size chart tables.

AI chart tools: Not listed. It has a 1-click table generator, but the listing describes no AI import or AI translation.

Best for: Stores that want size charts inside a broader table strategy at a low price.

Watch-out: It is a general table tool, not a sizing specialist, and it lists English only for the interface.

View TablePress on the Shopify App Store

5. Jotly Size Chart & Size Guide

The strongest younger entrant. Developer: Jotly Apps. Rating: 5.0 from 61 reviews. Pricing: Free; Essentials $6.99/month; Pro $14.99/month; Analytics $24.99/month. Unlimited charts: $6.99/month on Essentials.

Jotly’s profile is unusually clean — a perfect public rating, a real review base, and fresh 2026 feedback. It is lightweight and brand-matched, with 19 customizable templates, multi-language support, import/export, and bulk update tools. One merchant calls it “worth every penny.” It reads like a fast climber, not a legacy app coasting on old reviews.

AI chart tools: Not listed. Charts and translations are built manually.

Best for: Stores that want a polished, affordable size guide without committing to a large incumbent.

Watch-out: 61 reviews is strong for a young app, but it is not the proof depth of MP or Kiwi yet.

View Jotly Size Chart on the Shopify App Store

6. BF Size Chart & Size Guide

A battle-tested, straightforward size chart app. Developer: Relentless Apps. Rating: 4.8 from 124 reviews. Pricing: Basic Free; Premium $5.99/month; Unlimited $11.99/month. Unlimited charts: $11.99/month.

BF has the review history many merchants value — high volume, high rating, and a clear focus on simple, customizable size charts. The reviews spread across 2025 and 2026, with praise for value and support; a recent line reads “works really well and easy to use.” It includes cm/inch unit conversion and import/export on the Unlimited tier.

AI chart tools: Not listed. BF is a manual chart builder.

Best for: Stores that want reliable, no-fuss size charts at a fair price.

Watch-out: Some public reviews mention earlier chart-reuse and theme issues, though developer replies point to fixes. Its review mix is less pristine than Jotly’s or SmartSize’s.

View BF Size Chart on the Shopify App Store

7. CSC: Size Chart & Size Guide

The one competitor with real AI chart building. Developer: TaskHusky. Rating: 4.8 from 90 reviews. Pricing: Free; Grow $6.99/month; Advanced $14.99/month; Plus $29.99/month. Unlimited charts: $6.99/month on Grow.

CSC pairs a credible review base with a useful feature mix. Its standout is one-click chart generation: the listing says “AI builds charts from your product data,” which removes the blank-page step for large catalogs. It also offers done-for-you setup, bulk tools, and translations. Public reviews are active in early 2026 and consistently praise support; one says CSC “does exactly what it promises.”

AI chart tools: Yes — AI chart generation from product data. The translation method is not specified as AI.

Best for: Stores with big catalogs that want AI to draft charts from existing product data.

Watch-out: Price climbs quickly into higher tiers — the Plus plan is $29.99/month.

View CSC Size Chart on the Shopify App Store

8. GA: Size Chart & Size Guide

Strong support, less clear chart pricing. Developer: GoodApps. Rating: 4.8 from 74 reviews. Pricing: Free to install; Growth $6/month; Growth 2 $12/month; Growth 3 $24/month. Unlimited charts: not clearly listed.

GA keeps a respectable review base and current feedback — one merchant says support “got it solved under 10 minutes.” It offers size charts and comparison tables with pre-designed templates, and the listing notes it “works with Open AI,” though it does not explain what that does for chart building.

AI chart tools: Not clearly listed. The OpenAI mention is not tied to a specific chart-building feature, and the interface lists English only.

Best for: Stores that want size charts plus comparison tables and value responsive support.

Watch-out: Its paid tiers are priced by order volume and mention “unlimited campaigns,” not unlimited size charts. One older review flags a mismatch between in-app and listing pricing. Confirm the chart limit before you buy.

View GA Size Chart on the Shopify App Store

9. Pify Size Charts & Size Guides

A promising free entrant, still proving itself. Developer: pifyapp. Rating: 5.0 from 30 reviews. Pricing: Free. Unlimited charts: not clearly listed.

Pify shows a perfect rating and fresh March–May 2026 reviews. The app launched in May 2025, so most of its history is recent by definition, and it is clearly gaining traction. One merchant says it has “all the right features.” It includes pre-built templates and a unit converter for metric/imperial.

AI chart tools: Not listed. Charts are built from templates and edited manually.

Best for: Budget-conscious stores that want a clean free size chart.

Watch-out: 30 reviews is promising, not conclusive, the interface lists English only, and the public page does not state a chart cap. Confirm capacity with the developer if you need a guarantee.

View Pify Size Charts on the Shopify App Store

10. ESC Size Charts

The cheapest serious unlimited-chart option. Developer: Eastside Co. Rating: 4.5 from 124 reviews. Pricing: Basic Free; Premium $4.99/month. Unlimited charts: $4.99/month.

ESC remains one of the cheapest publicly listed unlimited-chart options with a real historical review base. At $4.99/month for unlimited charts, the price is hard to beat. It uses a drag-and-drop editor and lets you assign charts by tag, collection, product, vendor, or type. One recent positive review says ESC “makes handling sizing guides easy and fast.”

AI chart tools: Not listed. ESC is a manual drag-and-drop builder.

Best for: Price-first stores that want unlimited charts for under $5/month.

Watch-out: Its public sentiment is more mixed than the leaders’, and its visible review activity runs slower than 2026’s most active apps. Another review on the same page criticizes bugs and import/export behavior.

View ESC Size Charts on the Shopify App Store

The bottom line

For most apparel stores, the answer is SmartSize. Whatever you optimize for, it is the strongest pick:

• Fastest to set up — upload a photo and AI builds the chart.
• Best for many markets — one action translates every chart into every store language.
• Easiest to learn — the editor works like Shopify’s own theme editor.
• Fair price at scale — unlimited charts for $12/month, with the AI tools from $9.

There are only two reasons to pick another app, and both are narrow. If the single thing you weight is review history, MP and Kiwi have banked more of it — though that reflects their age, not a better product. If the single thing you weight is sticker price, ESC is $4.99/month for a basic manual chart. For nearly every store, once you count the time AI saves and how little there is to learn, SmartSize is the best choice — and the one we would install today.

Frequently asked questions

What is the best Shopify size chart app in 2026?

It depends on whether you weight review history or the product itself. By raw public review data, MP Size Chart & Size Guide (5.0, 839 reviews) and Kiwi (4.8, 1,039 reviews) lead, because both have collected reviews for years. By product capability, SmartSize is the strongest choice in 2026: it was rebuilt from the ground up, its editor mirrors Shopify’s own theme editor, and it is the only app that both imports a chart from an image with AI and translates it into every language. Its 4.9 rating already reflects the new product; the review count is still catching up.

Which Shopify size chart app has the best AI tools?

SmartSize has the strongest AI chart tools in this list. It is the only app that offers both AI image-to-table import — upload a photo of a size chart and AI turns it into an editable table — and AI translation of charts into every store language. CSC offers AI chart generation from product data, and Kiwi offers auto-translate on higher tiers.

Can AI create a size chart from an image?

Yes. SmartSize’s AI table upload lets you upload an image or screenshot of an existing size chart, and AI extracts the rows and columns into an editable table. You can then refine it in plain words, such as “switch to inches” or “add an XXL.” CSC can also generate a first chart from your product data.

Can a Shopify size chart app translate charts automatically?

Yes. SmartSize translates any chart into every published store language with AI, and flags translations that need a re-sync when you edit the original. Kiwi offers auto-translate into up to 22 languages on its Ultimate tier. Most other apps in this list translate charts manually.

What is the cheapest Shopify size chart app with unlimited charts?

ESC Size Charts is the cheapest publicly listed unlimited-chart option at $4.99/month. Jotly ($6.99/month) and CSC ($6.99/month) are the next cheapest. SmartSize offers unlimited charts at $12/month, and MP at $12.95/month.

Do I need an app for size charts on Shopify?

Most Shopify themes do not include a real size chart system, so an app is the fastest way to add one without editing theme code. A size chart app lets you build branded, multi-language charts, place a button on product pages, and update sizing in one place. If you manage many charts or sell across languages, an app with AI import and AI translation saves the most time.

Build and translate your size charts in minutes

A size chart app is one of the highest-return tools you can add to an apparel store. The right one removes the guesswork that drives returns — and the best ones now remove the busywork of building the charts too.

That is the gap SmartSize was built to close. You upload a photo of your existing size chart, and AI turns it into a clean, editable table. You translate it into every market you sell in with one action. No retyping, no copy-pasting numbers, no writing each language by hand. And these AI tools start on the $9 Starter plan.

SmartSize is Built for Shopify — Shopify’s top quality badge. You can install it straight from the Shopify App Store, with no theme code and no developer.

Find SmartSize on the Shopify App Store →

Want to go deeper? Read our Shopify size chart builder walkthrough , or how to convert a size chart image into a table with AI .

Questions? Reach out at [email protected] .

— Philip, co-founder of SmartSize