Custom Css Shopify Apps – Market Share Breakdown
(Updated October 2026) See which custom css 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.
Custom Css Shopify Apps — Full Market Share Table
All tracked custom css 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 |  Instafeed ‑ Instagram Feed | 37.23% | 12.05 | Climbing |
| 2 |  Easify Custom Product Options | 18.79% | 9.88 | Climbing |
| 3 |  Kaching Bundles App & Upsells | 14.29% | 13.39 | Climbing |
| 4 |  Consentmo GDPR Compliance | 11.12% | 10.06 | Climbing |
| 5 |  SMART Checkout Rules & Upsells | 4.60% | 3.36 | Climbing |
| 6 |  Upsell & Cross Sell — Selleasy | 4.33% | 4.11 | Climbing |
| 7 |  EW: EU Withdrawal Button &Form | 3.09% | 27.98 | Declining |
| 8 |  Globo Product Options, Variant | 2.53% | 1.90 | Climbing |
| 9 |  Powerful Contact Form Builder | 1.19% | 1.02 | Climbing |
| 10 |  BOGOS: Free Gift Bundle Upsell | 0.71% | 24.77 | Declining |
Showing 1-10 out of 25
Key Insights:
- Instafeed ‑ Instagram Feed holds 37.2% share of custom css app installs — 18.4pp ahead of Easify Custom Product Options (18.8%).
- Top 3 apps (Instafeed ‑ Instagram Feed, Easify Custom Product Options, Kaching Bundles App & Upsells) account for 70.3% of all custom css install share — a fragmented market.
- Kaching Bundles App & Upsells is gaining share fastest this month (+13.39pp) — the largest single gainer among the top custom css apps by share.
- EW: EU Withdrawal Button &Form is losing share fastest (-27.98pp) — could indicate a churning user base or a stronger challenger gaining ground.
Custom Css Shopify Apps — Market Share Over Time
Monthly market share trajectory for the top 5 custom css Shopify apps over the past year — see who's gaining or losing install share month by month.
Charts Data
| App | May 2026 | Jun 2026 | Jul 2026 | Aug 2026 | Sep 2026 | Oct 2026 |
|---|---|---|---|---|---|---|
| Kaching Bundles App & Upsells | 28.1% | 0.9%27.23 | 14.2%13.31 | 14.2% | 74.3%60.09 | 74.3%0.01 |
| Instafeed ‑ Instagram Feed | 27.2% | 25.1%2.16 | 37.2%12.12 | 39.9%2.72 | 10.3%29.59 | 10.3%0.01 |
| Easify Custom Product Options | 0.2% | 8.9%8.75 | 18.8%9.88 | 20.3%1.52 | 5.7%14.6 | 5.7%0.02 |
 Kaching CartDrawer Cart Upsell | — | — | — | 4.3% | 2.7%1.65 | 2.7%0.03 |
| Consentmo GDPR Compliance | 0.2% | 1.1%0.9 | 11.2%10.12 | 12.2%1.01 | 2.6%9.58 | 2.6%0.01 |
Key Insights:
- Kaching Bundles App & Upsells's share expanded from 28.1% → 74.3% over the charted period.
- Of the top 5 tracked custom css apps, 3 grew share and 2 lost share — leader is widening the gap.
Top Custom Css Shopify Apps by Country
Per-country market share rankings for custom css 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:
- Instafeed ‑ Instagram Feed leads custom css apps in all 4 tracked markets — United States, India, China, United Kingdom.
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Top 5 Apps in Custom Css
- Easy Custom CSS — Leads custom css apps with 0 install share, rated 4.0★.
- Kaching Bundles App & Upsells — Holds 74.3% of custom css app install share, rated 5.0★ — gaining share this month.
- Instafeed ‑ Instagram Feed — Holds 10.3% of custom css app install share, rated 4.9★ — losing share this month.
- Consentmo GDPR Compliance — Holds 2.6% of custom css app install share, rated 5.0★ — losing share this month.
- Easify Custom Product Options — Holds 5.7% of custom css app install share, rated 4.9★ — losing share this month.
Custom Css Shopify Apps — Frequently Asked Questions
1. Which custom css app has the highest market share on Shopify?
Instafeed ‑ Instagram Feed ranks #1 by share among custom css apps at 37.2%, 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 custom css Shopify apps?
For custom css (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 custom css apps are gaining market share on Shopify?
Kaching Bundles App & Upsells is gaining custom css app market share fastest this month, up +13.39pp versus 30 days ago. Switch the table sub-tab to "Market Share Changes" to see all gainers ordered by movement.
4. Which custom css apps are losing market share on Shopify?
EW: EU Withdrawal Button &Form has lost the most market share this month among custom css apps (-27.98pp). Sort the table by Change (Low to High) to see the full list of decliners.
5. Which countries drive the most custom css Shopify app installs?
United States drives the largest share of custom css app installs at 31.0%, followed by United Kingdom at 7.5% and Australia at 7.1%. Use the country picker on the third card to compare market leaders by country.
6. How many custom css apps does ShopDigest track on Shopify?
ShopDigest tracks 96 custom css 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 custom css app differ from the #1 ranked app?
Rank reflects an app's current position in the Shopify App Store under custom css (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 custom css, Instafeed ‑ Instagram Feed leads on share; see the rankings tab for who currently holds #1 position.
