Size Guide Shopify Apps – Market Share Breakdown
(Updated September 2026) See which size guide 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 Guide Shopify Apps — Full Market Share Table
All tracked size guide 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 |  MP Size Chart & Size Guide | 76.80% | 76.80 | Climbing |
| 2 |  Kiwi Size Chart & Recommender | 9.27% | 25.99 | Declining |
| 3 |  Pify Size Charts & Size Guides | 6.09% | 27.89 | Declining |
| 4 |  Jotly Size Chart & Size Guide | 4.65% | 10.92 | Declining |
| 5 |  Smart Size Chart & Fit Finder | 1.55% | 7.51 | Declining |
| 6 |  BF Size Chart & Size Guide | 0.89% | 1.10 | Declining |
| 7 |  CSC: Size Chart & Size Guide | 0.44% | 2.20 | Declining |
| 8 |  VibeTry AI Try On & Size Guide | 0.18% | 0.96 | Declining |
| 9 |  Sized Size Charts & Size Guide | 0.04% | 0.11 | Declining |
| 10 |  ILM Size Chart & Size Guide | 0.02% | 0.02 | Climbing |
Showing 1-10 out of 25
Key Insights:
- MP Size Chart & Size Guide holds 76.8% share of size guide app installs — 67.5pp ahead of Kiwi Size Chart & Recommender (9.3%).
- Top 3 apps (MP Size Chart & Size Guide, Kiwi Size Chart & Recommender, Pify Size Charts & Size Guides) account for 92.2% of all size guide install share — a concentrated market.
- MP Size Chart & Size Guide is gaining share fastest this month (+76.80pp) — the largest single gainer among the top size guide apps by share.
- Pify Size Charts & Size Guides is losing share fastest (-27.89pp) — could indicate a churning user base or a stronger challenger gaining ground.
Size Guide Shopify Apps — Market Share Over Time
Monthly market share trajectory for the top 5 size guide 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 |
|---|---|---|---|---|---|---|
| MP Size Chart & Size Guide | 83.7%2.59 | 78.3%5.48 | 78.3% | 77.1%1.14 | 10.0%67.11 | 70.2%60.22 |
| Smart Size Chart & Fit Finder | 8.2%0.52 | 0.1%8.16 | 9.1%9 | 1.6%7.49 | 0.1%1.52 | 10.3%10.3 |
| Pify Size Charts & Size Guides | 3.7%1.15 | 6.1%2.44 | 34.0%27.88 | 5.8%28.22 | 3.4%2.38 | 8.1%4.75 |
| Kiwi Size Chart & Recommender | 1.2%0.14 | 11.3%10.07 | 35.3%23.96 | 9.4%25.83 | 84.7%75.25 | 6.1%78.58 |
| Jotly Size Chart & Size Guide | 1.8%3.19 | 3.0%1.18 | 15.6%12.61 | 4.5%11.13 | 1.3%3.15 | 3.9%2.58 |
Key Insights:
- MP Size Chart & Size Guide's share expanded from 63.9% → 70.2% over the charted period.
- Of the top 5 tracked size guide apps, 2 grew share and 3 lost share — leader is widening the gap.
Top Size Guide Shopify Apps by Country
Per-country market share rankings for size guide 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:
- MP Size Chart & Size Guide leads size guide apps in all 4 tracked markets — United States, India, China, United Kingdom.
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Top 5 Apps in Size Guide
- MP Size Chart & Size Guide — Leads size guide apps with 70.2% install share, rated 5.0★ — gaining share this month.
- Pify Size Charts & Size Guides — Holds 8.1% of size guide app install share, rated 5.0★ — losing share this month.
- Smart Size Chart & Fit Finder — Holds 10.4% of size guide app install share, rated 5.0★ — gaining share this month.
- Jotly Size Chart & Size Guide — Holds 3.9% of size guide app install share, rated 5.0★ — losing share this month.
- CSC: Size Chart & Size Guide — Holds 0.4% of size guide app install share, rated 5.0★ — gaining share this month.
Size Guide Shopify Apps — Frequently Asked Questions
1. Which size guide app has the highest market share on Shopify?
MP Size Chart & Size Guide dominates the size guide category on Shopify with 76.8% of installs — 67.5pp ahead of Kiwi Size Chart & Recommender. This is a clear leader by share, so most merchants default to it unless they have a niche-fit reason to pick differently.
2. How is market share calculated for size guide Shopify apps?
For size guide (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 guide apps are gaining market share on Shopify?
MP Size Chart & Size Guide is gaining size guide app market share fastest this month, up +76.80pp versus 30 days ago. Switch the table sub-tab to "Market Share Changes" to see all gainers ordered by movement.
4. Which size guide apps are losing market share on Shopify?
Pify Size Charts & Size Guides has lost the most market share this month among size guide apps (-27.89pp). Sort the table by Change (Low to High) to see the full list of decliners.
5. Which countries drive the most size guide Shopify app installs?
United States drives the largest share of size guide app installs at 25.3%, followed by Netherlands at 10.0% and United Kingdom at 7.9%. Use the country picker on the third card to compare market leaders by country.
6. How many size guide apps does ShopDigest track on Shopify?
ShopDigest tracks 96 size guide apps on the Shopify App Store. Market share, rankings, and review data refresh weekly so you can track competitive shifts as they happen.
