Kiwi Sizing vs MP Size Chart & Size Guide: Full Comparison for Shopify Stores

Sizing uncertainty is one of the most expensive friction points in e-commerce — especially in fashion, apparel, and footwear. When shoppers aren’t sure which size fits, they hesitate, bracket-buy two sizes, or abandon the cart. That uncertainty drives the single largest cause of apparel returns: Coresight Research and Alvanon estimate that around 70% of online apparel returns are size and fit related.

A good size chart app fixes that at the source. Two of the most popular choices on Shopify are Kiwi Size Chart & Recommender (commonly called Kiwi Sizing) and MP Size Chart & Size Guide by Shopplaza. Both now offer AI size recommendations, and both have free plans — but they differ on setup, structure, and one of Shopify’s key trust signals: only MP carries the Built for Shopify badge.

This guide compares the two on the things that change the decision: ease of use, templates, AI recommendations, the standalone Sizing Page, performance, pricing, and ratings. All figures below were verified live on the Shopify App Store in June 2026.

Comparison Table: Kiwi Sizing vs MP Size Chart & Size Guide

Here is the side-by-side, with live App Store data (June 2026):

The short version: Kiwi is the more configurable tool with a larger, more mature review base. MP Size Chart is the faster, cleaner tool with a higher rating, the Built for Shopify badge, and a few CRO-focused features Kiwi doesn’t have — chiefly the standalone Sizing Page. The rest of this guide explains where each difference actually matters.

Overview of Both Apps

What is Kiwi Sizing?

Kiwi Size Chart & Recommender is one of the most established size chart apps on Shopify, known for flexibility and deep customization. Its strengths:

• AI-powered size recommender with recommender analytics
• Highly customizable charts — multi-tab layouts, images, videos, custom HTML
• Chart import from CSV, images, and existing webpages (HTML extraction)
• Auto unit conversion based on shopper location

Kiwi suits merchants who want full control over chart structure and fit logic, and who are comfortable with a longer setup. With 1,033 reviews at 4.8★, it has the larger and more battle-tested install base of the two.

What is MP Size Chart & Size Guide?

MP Size Chart & Size Guide (by Shopplaza) is built around simplicity, performance, and conversion. The goal is charts that are fast to build, easy to read, and cleanly integrated into the buying journey. Highlights:

• 30+ ready-to-use templates (apparel, footwear, pet accessories, and more)
• No-code visual editor
• AI size recommendations
• A dedicated, store-wide Sizing Page
• Auto unit conversion (cm ↔ inches) and size conversion (US ↔ UK ↔ EU ↔ AU)
• Lightweight scripts for faster loading
• Flexible assignment rules (product, collection, tag, vendor, global)
• Size chart reminders to lift visibility
• 20+ languages with in-app translation

At 5.0★ across 832 reviews — the highest rating in the category — and a Built for Shopify badge, MP is aimed at fast-moving teams that want an intuitive, scalable, performance-focused app. You can read the full feature breakdown on the MP Size Chart page.

Deep Feature Comparison

Below is a more detailed breakdown based on your feature matrix.

Ease of use

Kiwi Sizing is powerful but takes longer to configure. The trade-off for its flexibility is more options to learn, which is fine for merchants who want granular control but slower for a small team that just needs charts live.

MP Size Chart & Size Guide sets up in minutes with a drag-and-drop editor and ready templates. It’s the more beginner-friendly of the two — most stores get a chart live without touching code.

Who wins:

• MP Size Chart & Size Guide for simplicity and speed
• Kiwi Sizing for deep customization

Templates & design flexibility

Kiwi Sizing offers 11 templates plus heavy customization — multi-tab designs, multiple tables per chart, images, videos, and CSS styling. It’s the better fit when you need complex, brand-specific layouts and have someone comfortable in HTML/CSS.

MP Size Chart & Size Guide ships 30+ templates with drag-and-drop editing, two-column and multi-tab chart options, and support for text, images, and video — all no-code, with a consistent modern UI. The larger template library means most stores start from something close to finished rather than a blank chart.

Who wins:

• Kiwi for bespoke, code-level layouts
• MP Size Chart for the breadth of ready templates and fast, consistent execution.

AI size recommendations

Both apps now lead with AI — this is a category-wide shift, and the old “Kiwi has AI, MP doesn’t” framing is out of date.

Kiwi has the more advanced recommender: it includes recommender analytics and can add the suggested size straight to cart. If you want to measure and tune the recommender itself, Kiwi gives you more to work with.

MP Size Chart & Size Guide provides AI size recommendations focused on a fast, frictionless shopper experience — a few inputs return a clear size suggestion, which covers common apparel sizing well without extra configuration.

Who wins:

• Kiwi for advanced stores
• MP Size Chart for a simpler, quicker recommender experience.

Import/Export & Data Management

Kiwi Sizing is the stronger data tool here. Alongside CSV import/export, it can extract charts from product descriptions and existing webpages (HTML extraction) and bulk-create charts from that data — useful if you’re migrating a lot of existing sizing content.

MP Size Chart & Size Guide keeps data management simple: CSV import/export, auto-generated charts from size variants, and chart migration between stores. If you’re switching apps, MP’s team will migrate your existing charts for free, which removes most of the pain of moving over.

Who wins:

• Kiwi Sizing for HTML/webpage extraction
• MP Size Chart & Size Guide for a simpler workflow and free migration support.

Sizing Page (Global Size Guide Page)

This is the clearest functional difference between the two apps.

Kiwi Sizing ties every chart to a product — either a product-page popup or an embedded chart. There’s no standalone, store-wide size guide, which means sizing content stays fragmented across product pages, can’t be linked from your main menu or footer, and is hard to use for SEO or pre-purchase education.

MP Size Chart & Size Guide is the only one of the two that offers a true Sizing Page — a dedicated page (e.g. /pages/size-guide) that aggregates all your sizing in one place.

View sizing page on storefront:

Why that matters:

• One central size guide accessible across the whole store
• Linkable from menus, footers, product pages, and landing pages
• Consistent sizing rules across collections and product types
• An SEO-friendly page that can rank for size-related searches
• Moves sizing earlier in the journey — proactive education, not just a reactive popup

For fashion brands, multi-collection stores, and paid-traffic funnels, this turns sizing from a support feature into a conversion asset.

Who wins:

• MP Size Chart & Size Guide — the only solution offering a true global Sizing Page
• Kiwi Sizing — does not support this capability

Performance & load speed

Kiwi Sizing’s scripts are more powerful but heavier, and the weight scales with how much you configure.

MP Size Chart & Size Guide uses lightweight scripts with faster modal loading — better for Core Web Vitals, mobile, and SEO. MP also carries the Built for Shopify badge, which certifies it against Shopify’s performance bar; Kiwi is powerful but the heavier of the two.

Who wins:

• MP Size Chart & Size Guide (faster, cleaner, Shopify-friendly)

Chart display, placement & visibility

Both apps offer:

• Add size chart per product
• Conditions (collection, tag, vendor, type)
• Placement customization
• Choose size chart width
• Link between products and size chart
• Table styles

Kiwi Sizing

MP Size Chart

Unique differences:

• Kiwi Sizing: Add logo on chart modal, size chart permalink.
• MP Size Chart & Size Guide: Size chart reminders, display for selected countries.

MP Size Chart: Size reminder

MP Size Chart’s additions lean toward conversion behavior — nudging shoppers to actually open the chart, and tailoring what shows by market — rather than adding raw configuration.

Size and unit conversion

Kiwi Sizing auto-converts units, lets you style the conversion, and supports auto international conversion charts.

MP Size Chart & Size Guide auto-converts both units (cm ↔ inches) and size labels (US ↔ UK ↔ EU ↔ AU) with minimal setup.

Who wins:

• Kiwi for more conversion controls
• MP Size Chart & Size Guide for instant, hassle-free setup.

Pricing & ratings

Pricing is close to identical at every tier. The clearest gap is the rating: MP Size Chart holds a 5.0★ — the highest in the category — while Kiwi sits at 4.8★ with a larger, longer-running review base. More reviews signal maturity; a higher rating signals current satisfaction. Both are worth weighing.

Who wins: MP Size Chart on rating and (marginally) price; Kiwi on review volume and track record.

Built for Shopify badge

This is a genuine point of difference. MP Size Chart & Size Guide carries the Built for Shopify badge; Kiwi Sizing does not. Of the major size chart apps on the store, most have earned the badge — Kiwi is one of the few that haven’t.

The badge is Shopify’s highest app-quality certification, awarded for meeting their standards on:

• Performance and load speed
• Reliability and security
• UX and design quality
• Online Store 2.0 compatibility
• Support quality

It doesn’t make Kiwi a bad app — it’s popular and well-reviewed — but it does mean MP has passed Shopify’s certification bar and Kiwi hasn’t. For merchants who weight long-term stability and Shopify’s own trust signal, that’s a real advantage for MP.

Who wins:

• MP Size Chart & Size Guide — it’s Built for Shopify certified; Kiwi is not.

Which App Should You Choose?

A practical, honest split:

Choose Kiwi Sizing if you:

• Need maximum customization and custom HTML/CSS layouts
• Want webpage / HTML chart extraction for migrating existing content
• Need multi-tab or complex multi-table charts
• Want deeper recommender analytics and granular fit logic
• Value the larger, more established review base

Choose MP Size Chart & Size Guide if you:

• Want a fast, no-code app that’s live in minutes
• Want 30+ ready templates and a consistent modern UI
• Need a store-wide Sizing Page for SEO and pre-purchase education
• Want size chart reminders and country-specific display rules
• Care about lightweight performance and mobile speed
• Want a Built for Shopify certified app
• Want the highest rating in the category at a competitive price

Most apparel and fashion stores land on MP because it’s faster to operate and easier for a team to maintain. Stores with complex, highly custom sizing needs — or a developer on hand — often prefer Kiwi’s depth.

If you want to weigh other options too, see the best Shopify size chart apps, or the full MP Size Chart comparison hub.

Final verdict

Both apps solve the same core problem — fewer size-driven returns, more buyer confidence — and both are strong, AI-equipped tools. The decision is about fit, not quality:

• Kiwi Sizing wins on depth: custom HTML layouts, webpage extraction, multi-tab charts, recommender analytics, and the larger review base. It’s the choice when you want full control and have the time (or the developer) to use it.
• MP Size Chart & Size Guide wins on simplicity, speed, and conversion structure: 30+ templates, a true store-wide Sizing Page, lightweight performance, country-specific display, the Built for Shopify badge, the highest rating in the category (5.0★), and free migration.

For the majority of apparel and fashion stores — especially those prioritizing fast setup, ease of operation, and SEO-ready sizing — MP Size Chart & Size Guide is the more efficient, scalable choice. For stores that need maximum configurability, Kiwi remains the more powerful tool.

FAQs

1. Is Kiwi Sizing better than MP Size Chart & Size Guide?

Neither is universally “better” — they optimize for different things. Kiwi Sizing offers deeper customization (custom HTML, multi-tab charts, webpage extraction) and has more reviews (4.8★, 1,033). MP Size Chart & Size Guide is easier and faster to use, ships 30+ templates and a store-wide Sizing Page, and holds the higher rating (5.0★, 832 reviews). Most apparel stores pick MP Size Chart for speed and ease; stores needing heavy customization pick Kiwi.

2. Do both apps have AI size recommendations?

Yes. Both Kiwi Sizing and MP Size Chart & Size Guide now offer AI-powered size recommendations. Kiwi’s recommender adds analytics and add-to-cart of the suggested size; MP’s focuses on a fast, low-friction shopper experience.

3. Are both apps Built for Shopify?

No. MP Size Chart & Size Guide carries the Built for Shopify badge — Shopify’s highest app-quality certification for performance, reliability, UX, and security. Kiwi Sizing does not. It’s a genuine point of difference in MP’s favor for merchants who weight Shopify’s own trust signal.

4. Which app loads faster: Kiwi Sizing or MP Size Chart?

MP Size Chart & Size Guide uses lighter-weight scripts and faster modal loading, which is better for Core Web Vitals and mobile. Kiwi is more powerful but heavier, and its weight scales with how much you configure.

5. Which sizing app is easier to set up?

MP Size Chart & Size Guide is easier to set up, thanks to 30+ ready templates and a no-code drag-and-drop editor — most stores are live in minutes. Kiwi is more configurable but takes longer to learn.

6. Does Kiwi Sizing have a standalone size guide page?

No. Kiwi ties charts to individual products (popups or embeds) and does not offer a standalone, store-wide Sizing Page. MP Size Chart & Size Guide is the only one of the two with a dedicated Sizing Page you can link from menus and footers.

7. Do both apps support CSV import?

Yes, both support CSV import/export. Kiwi offers unlimited CSV imports; MP also auto-generates charts from size variants and migrates existing charts for free if you’re switching apps.

8. Which app is better for large SKU catalogs?

MP Size Chart & Size Guide is generally better for large catalogs because of its template library and flexible assignment rules (product, collection, tag, vendor, global), which apply charts at scale without per-product work. Kiwi works too but takes longer to configure across many SKUs.