Size Charts Shopify Apps – Market Share Breakdown
(Updated September 2026) See which size charts Shopify apps dominate installs and how their share has shifted over time. This keyword page shows the full market share table, monthly share trends for the leaders, and a country-level breakdown so you can compare global vs regional dominance.
Size Charts Shopify Apps — Full Market Share Table
All tracked size charts Shopify apps ranked by current install share, with change vs 30 days ago and Leader / Climbing / Declining / Stable status — filterable by country and date range.
| # | App | Market Share | Change | Status |
|---|---|---|---|---|
| 1 |  Kiwi Size Chart & Recommender | 78.41% | 7.87 | Declining |
| 2 |  MP Size Chart & Size Guide | 11.37% | 11.37 | Climbing |
| 3 |  Pify Size Charts & Size Guides | 2.58% | 0.85 | Declining |
| 4 |  Globo Product Options, Variant | 2.26% | 0.86 | Declining |
| 5 |  Smart Size Chart & Fit Finder | 1.75% | 1.16 | Declining |
| 6 |  Easify Custom Product Options | 1.68% | 0.15 | Declining |
| 7 |  Jotly Size Chart & Size Guide | 0.84% | 0.06 | Climbing |
| 8 |  OPTIS Product Options, Variant | 0.72% | 0.15 | Declining |
| 9 |  BF Size Chart & Size Guide | 0.19% | 0.01 | Climbing |
| 10 |  ScaleChart: Size Chart & Guide | 0.09% | 0.05 | Climbing |
Showing 1-10 out of 24
Key Insights:
- Kiwi Size Chart & Recommender holds 78.4% share of size charts app installs — 67.0pp ahead of MP Size Chart & Size Guide (11.4%).
- Top 3 apps (Kiwi Size Chart & Recommender, MP Size Chart & Size Guide, Pify Size Charts & Size Guides) account for 92.4% of all size charts install share — a fragmented market.
- MP Size Chart & Size Guide is gaining share fastest this month (+11.37pp) — the largest single gainer among the top size charts apps by share.
- Kiwi Size Chart & Recommender is losing share fastest (-7.87pp) — could indicate a churning user base or a stronger challenger gaining ground.
Size Charts Shopify Apps — Market Share Over Time
Monthly market share trajectory for the top 5 size charts Shopify apps over the past year — see who's gaining or losing install share month by month.
Charts Data
| App | Apr 2026 | May 2026 | Jun 2026 | Jul 2026 | Aug 2026 | Sep 2026 |
|---|---|---|---|---|---|---|
| Kiwi Size Chart & Recommender | — | 45.7% | 86.3%40.58 | 78.7%7.57 | 47.4%31.37 | 33.0%14.39 |
| MP Size Chart & Size Guide | — | 43.2% | 43.2% | 11.3%31.93 | 25.1%13.86 | 31.1%6.03 |
| Pify Size Charts & Size Guides | — | 2.1% | 3.4%1.29 | 2.4%1.02 | 9.8%7.42 | 11.6%1.79 |
| Smart Size Chart & Fit Finder | — | 1.3% | 2.9%1.61 | 1.8%1.16 | 3.5%1.72 | 8.1%4.66 |
| Globo Product Options, Variant | — | 3.1% | 3.1%0.03 | 2.3%0.84 | 4.9%2.62 | 5.0%0.13 |
Key Insights:
- Kiwi Size Chart & Recommender's share contracted from 45.7% → 33.0% over the charted period.
- Of the top 5 tracked size charts apps, 3 grew share and 2 lost share — challengers are eating into leader's share.
Top Size Charts Shopify Apps by Country
Per-country market share rankings for size charts Shopify apps across 5 markets — see which apps lead in each country and where regional leaders diverge from the global leader.
| # | 🌎 Worldwide |  United States |  India |  China |  United Kingdom |
|---|---|---|---|---|---|
| 1 | | | | | |
| 2 | | | | | |
| 3 | | | | | |
| 4 | | | | | |
| 5 | | | | | |
Key Insights:
- Kiwi Size Chart & Recommender leads size charts apps in all 4 tracked markets — United States, India, China, United Kingdom.
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Top 5 Apps in Size Charts
- Pify Size Charts & Size Guides — Leads size charts apps with 11.6% install share, rated 5.0★ — gaining share this month.
- MP Size Chart & Size Guide — Holds 31.2% of size charts app install share, rated 5.0★ — gaining share this month.
- Smart Size Chart & Fit Finder — Holds 8.1% of size charts app install share, rated 5.0★ — gaining share this month.
- Kiwi Size Chart & Recommender — Holds 33.0% of size charts app install share, rated 4.8★ — losing share this month.
- Jotly Size Chart & Size Guide — Holds 2.4% of size charts app install share, rated 5.0★ — gaining share this month.
Size Charts Shopify Apps — Frequently Asked Questions
1. Which size charts app has the highest market share on Shopify?
Kiwi Size Chart & Recommender ranks #1 by share among size charts apps at 78.4%, but the market is fragmented — multiple apps capture meaningful share. Compare the top 5 on features and pricing before deciding.
2. How is market share calculated for size charts Shopify apps?
For size charts (a keyword page), market share is rank-weighted — apps at position #1 carry roughly 40× the weight of apps at position #22, and apps beyond #22 are excluded. Each app's weighted score is divided by the total weighted score across the keyword to give the share %. This reflects Shopify search behaviour: most installs come from the top of the results.
3. Which size charts apps are gaining market share on Shopify?
MP Size Chart & Size Guide is gaining size charts app market share fastest this month, up +11.37pp versus 30 days ago. Switch the table sub-tab to "Market Share Changes" to see all gainers ordered by movement.
4. Which size charts apps are losing market share on Shopify?
Kiwi Size Chart & Recommender has lost the most market share this month among size charts apps (-7.87pp). Sort the table by Change (Low to High) to see the full list of decliners.
5. Which countries drive the most size charts Shopify app installs?
United States drives the largest share of size charts app installs at 23.6%, followed by Netherlands at 11.4% and India at 7.7%. Use the country picker on the third card to compare market leaders by country.
6. How many size charts apps does ShopDigest track on Shopify?
ShopDigest tracks 96 size charts apps on the Shopify App Store. Market share, rankings, and review data refresh weekly so you can track competitive shifts as they happen.
7. Why does the highest-share size charts app differ from the #1 ranked app?
Rank reflects an app's current position in the Shopify App Store under size charts (driven by Shopify's own algorithm), while market share on ShopDigest is estimated from review counts and other factors as a proxy for active installs. The two metrics move on independent dynamics, so the highest-share app and the #1-ranked app are not always the same — and a divergence between them is worth noting rather than assuming one will pull the other along. For size charts, Kiwi Size Chart & Recommender leads on share; see the rankings tab for who currently holds #1 position.
