K

Shopify product comparison app by Kaktus·Help customers easily find their true size with detailed size charts and reduce return rate.

Snapshot

5.00(10 reviews)#35of 188 inProduct comparison

Ongoing.AI tracks K daily — category rank, keyword positions in App Store search, install footprint, listing changes, and reviewer sentiment — back to when we first observed the listing.

CategoriesProduct comparisonProduct variants

Rating

5.00

10 reviews

Pricing

From $4/mo

freemium

Built for Shopify

No

Years live

1

launched Oct 2, 2024

Last updated

Jun 30, 2026

Shopify listing

Category rank over time

Where K sits day-by-day in Product comparison.

Position across the Product comparison page, snapshot daily. Lower is better — the Y axis is inverted so the strongest ranks sit at the top of the chart. Open the full Product comparison leaderboard →

#51#57#63#69#75May 28May 31Jun 4Jun 7Jun 11K · #64Unbridaled Diamonds · #63RecoMelon · #65
Best position observed: #52. K slipped 10 positions over the window. Greyed lines: the apps sitting immediately around it on the latest snapshot.

Catalog position

Where K sits in the App Store.

Rank and percentile inside the Product comparison category — the competitive shape of the niche around this app.

Rank in Product comparison

#35

of 188 active apps

Review count percentile

82th

vs category siblings

Rating percentile

73th

vs category siblings

Years on App Store

1

since 2024

Listing change cadence

What K has changed lately.

Every pricing tweak, tagline refresh, and Shopify-side listing ping. Captured from Ongoing.AI’s per-scrape diff log — the cadence and the content of changes, in one strip.

Listing changes · last 21 days+13shopify_lastmod: 2026-06-08 → 2026-06-10shopify_lastmod: 2026-06-10 → 2026-06-16shopify_lastmod: 2026-06-16 → 2026-06-19shopify_lastmod: 2026-06-19 → 2026-06-25shopify_lastmod: 2026-06-25 → 2026-06-26shopify_lastmod: 2026-06-26 → 2026-06-30Jun 11, 26Jun 21, 26Jul 2, 26

Shopify Lastmod · Jul 1

2026-06-26 → 2026-06-30

Shopify Lastmod · Jun 27

2026-06-25 → 2026-06-26

Shopify Lastmod · Jun 26

2026-06-19 → 2026-06-25

PricingIdentity & listingCadence

Reviews

What merchants are saying

5.00(10 reviews)
  • 100%positive15
  • 0%neutral0
  • 0%negative0

Top themes

    What merchants praise

    “easy to install. will test it with some products. not very sure how to edit size specs for each product yet.”
    SMY APPAREL INC · 5★

    Plans

    K pricing tiers.

    Free

    Free to install

    • AI Size Chart & Guides Generating
    • Unlimited Size Charts & Guides
    • Embed Anywhere or Float on Site
    • Custom Fonts, Colors & Layouts
    • Drag-and-Drop Customizer
    • Specific Triggers and Rules
    • Mobile-Optimized Design
    • No Coding Needed & Knowledgeable Support

    Growth

    $4.99/month

    • AI Size Chart & Guides Generating
    • Unlimited Size Charts & Guides
    • Embed Anywhere or Float on Site
    • Custom Fonts, Colors & Layouts
    • Drag-and-Drop Customizer
    • Specific Triggers and Rules
    • Mobile-Optimized Design
    • No Coding Needed & Knowledgeable Support

    Unlimited

    $9.99/month

    • AI Size Chart & Guides Generating
    • Unlimited Size Charts & Guides
    • Embed Anywhere or Float on Site
    • Custom Fonts, Colors & Layouts
    • Drag-and-Drop Customizer
    • Specific Triggers and Rules
    • Mobile-Optimized Design
    • No Coding Needed & Knowledgeable Support

    Capabilities

    What Size Charts & Size Guide can do.

    The 17 capabilities Size Charts & Size Guide lists across each of its 2 categories, in Shopify’s own taxonomy. Pulled directly from the App Store listing.

    Product comparison

    Comparison tools

    5
    • Comparison page
    • Comparison table
    • Pop-ups
    • Size charts
    • Variants

    Display options

    7
    • Table layout
    • Custom CSS
    • Color and font
    • Custom text
    • Templates
    • Product page
    • Mobile responsive

    Product variants

    Customization

    5
    • Fonts
    • Dimensions
    • Custom text
    • Custom CSS
    • Size charts

    FAQ

    Size Charts & Size Guide — frequently asked questions.

    What is Size Charts & Size Guide on Shopify?
    Size Charts & Size Guide, officially listed on the Shopify App Store as K: Size Charts & Size Guide, is a Shopify app in the Product comparison category. Size Guides & Size Chart app help your customers to say goodbye to sizing frustrations. Create custom size charts with ease using size selector and AI generator. Designed for shop owners, our app lets you build accurate, true-to-size charts, size finders, size recommendation and fit guides to enhance your customers' shopping experience. Perfect for clothes size chart, shoes size or accessories. Increase your confidence, increase your profits and make sure that size matters! It averages 5.00 out of 5 across 10 merchant reviews on the Shopify App Store.
    How much does Size Charts & Size Guide cost?
    Size Charts & Size Guide offers a free plan and 2 paid plans starting at $4/month and going up to $9.99/month. The free plan includes AI Size Chart & Guides Generating, Unlimited Size Charts & Guides, Embed Anywhere or Float on Site, and Custom Fonts, Colors & Layouts. The paid plans unlock advanced features beyond what's available on the free tier.
    Is Size Charts & Size Guide free?
    Yes — Size Charts & Size Guide offers a free plan alongside paid options. The free plan includes AI Size Chart & Guides Generating, Unlimited Size Charts & Guides, and Embed Anywhere or Float on Site. Paid plans start at $4/month for advanced features.
    When was Size Charts & Size Guide launched?
    Size Charts & Size Guide launched on October 2, 2024 — over 1 year on the Shopify App Store. In that time it has gathered 10 merchant reviews.
    Is Size Charts & Size Guide Built for Shopify?
    Size Charts & Size Guide does not currently carry Shopify's Built for Shopify badge. The badge is awarded to apps that meet Shopify's published standards for performance, ease of use, and merchant value — many high-quality apps operate without it.
    What are the best Size Charts & Size Guide alternatives?
    Merchants commonly compare Size Charts & Size Guide with Globo Product Options, Variant, Easify Custom Product Options, Color Swatch King, and Infinite Product Options. Each alternative covers a similar use case but differs on pricing model, integration depth, and the specific themes merchants praise in reviews — see the alternatives section above for a side-by-side.

    Alternatives

    Apps merchants pick instead.

    Globo Options

    Globo Product Options, Variant

    4.90★4,588

    Known for: missing-feature

    Easify

    Easify Custom Product Options

    4.90★2,775

    Known for: performance

    StarApps

    Color Swatch King: Variants

    4.90★2,677

    Known for: billing-issues

    ShopPad Inc.

    Infinite Product Options

    4.70★2,438

    Known for: performance

    Browse more inAll Product comparison apps All Product variants apps

    Methodology

    Where the numbers come from.

    Ratings, review counts, pricing tiers, “Built for Shopify”, launch date, and category memberships come from the live Shopify App Store listing — refreshed daily by Ongoing.AI’s crawler. The review-count trajectory is the diff between today’s snapshot and snapshots from 7 and 28 days ago. Topic counts and sentiment come from the review corpus, topic-tagged with Claude. Install footprint is observed via Ongoing.AI’s tech-detection pass against actively-tracked Shopify storefronts. Catalog position is computed at snapshot time against every active app sharing the primary category. Snapshot generated .

    Find every brand running K.

    Ongoing.AI tracks every Shopify brand’s app stack daily. Pull the full install list, filter by vertical or geography, and catch the moment merchants install — or churn off.

    Request access Get alerts on K

    Prefer the source? View K on the Shopify App Store ↗