Custom Domain Shopify Apps – Market Share Breakdown
(Updated October 2026) See which custom domain 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 Domain Shopify Apps — Full Market Share Table
All tracked custom domain 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 |  UpPromote Affiliate Marketing | 77.12% | 2.58 | Declining |
| 2 |  Affiliate Marketing ReferrLy | 14.18% | 1.06 | Climbing |
| 3 |  BixGrow Affiliate Marketing | 4.47% | 0.12 | Declining |
| 4 |  Affilitrak Affiliate Marketing | 3.04% | 2.30 | Climbing |
| 5 |  Shortly — Affiliate Marketing | 0.54% | 0.12 | Declining |
| 6 |  GOAFFPRO ‑ Affiliate Marketing | 0.29% | 0.47 | Declining |
| 7 |  Referral Program ‑ Shopjar | 0.18% | 0.11 | Climbing |
| 8 |  Simple Affiliate | 0.09% | 0.19 | Declining |
| 9 |  impact.com Affiliate Marketing | 0.02% | 0.00 | Declining |
| 10 |  Multi Vendor ‑ Puppet Vendors | 0.01% | 0.00 | Climbing |
Showing 1-10 out of 23
Key Insights:
- UpPromote Affiliate Marketing holds 77.1% share of custom domain app installs — 62.9pp ahead of Affiliate Marketing ReferrLy (14.2%).
- Top 3 apps (UpPromote Affiliate Marketing, Affiliate Marketing ReferrLy, BixGrow Affiliate Marketing) account for 95.8% of all custom domain install share — a competitive market.
- Affilitrak Affiliate Marketing is gaining share fastest this month (+2.30pp) — the largest single gainer among the top custom domain apps by share.
- UpPromote Affiliate Marketing is losing share fastest (-2.58pp) — could indicate a churning user base or a stronger challenger gaining ground.
Custom Domain Shopify Apps — Market Share Over Time
Monthly market share trajectory for the top 5 custom domain 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 |
|---|---|---|---|---|---|---|
| UpPromote Affiliate Marketing | 79.4% | 79.7%0.29 | 77.2%2.53 | 44.8%32.31 | 40.8%4.08 | 54.5%13.77 |
| Affiliate Marketing ReferrLy | 11.7% | 13.1%1.42 | 14.1%0.98 | 23.9%9.83 | 39.7%15.73 | 33.4%6.31 |
| BixGrow Affiliate Marketing | 5.0% | 4.6%0.4 | 4.5%0.09 | 24.0%19.53 | 13.2%10.82 | 7.2%5.97 |
| Affilitrak Affiliate Marketing | 2.5% | 0.7%1.77 | 3.0%2.31 | 5.2%2.14 | 4.1%1.06 | 2.5%1.58 |
| Referral Program ‑ Shopjar | 0.0% | 0.1%0.05 | 0.2%0.12 | 0.8%0.63 | 1.1%0.26 | 1.2%0.16 |
Key Insights:
- UpPromote Affiliate Marketing's share contracted from 79.4% → 54.5% over the charted period.
- Of the top 5 tracked custom domain apps, 4 grew share and 1 lost share — challengers are eating into leader's share.
Top Custom Domain Shopify Apps by Country
Per-country market share rankings for custom domain 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:
- UpPromote Affiliate Marketing leads custom domain apps in all 4 tracked markets — United States, India, China, United Kingdom.
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Top 5 Apps in Custom Domain
- Affiliate Marketing ReferrLy — Leads custom domain apps with 33.4% install share, rated 5.0★ — gaining share this month.
- UpPromote Affiliate Marketing — Holds 54.5% of custom domain app install share, rated 4.9★ — gaining share this month.
- BixGrow Affiliate Marketing — Holds 7.2% of custom domain app install share, rated 4.9★ — losing share this month.
- Referral Program ‑ Shopjar — Holds 1.2% of custom domain app install share, rated 4.9★ — gaining share this month.
- Affilitrak Affiliate Marketing — Holds 2.6% of custom domain app install share, rated 5.0★ — losing share this month.
Custom Domain Shopify Apps — Frequently Asked Questions
1. Which custom domain app has the highest market share on Shopify?
UpPromote Affiliate Marketing currently holds the highest market share for custom domain apps at 77.1%, but the category is competitive — Affiliate Marketing ReferrLy is close behind at 14.2%. The right choice depends on your specific store needs.
2. How is market share calculated for custom domain Shopify apps?
For custom domain (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 domain apps are gaining market share on Shopify?
Affilitrak Affiliate Marketing is gaining custom domain app market share fastest this month, up +2.30pp versus 30 days ago. Switch the table sub-tab to "Market Share Changes" to see all gainers ordered by movement.
4. Which custom domain apps are losing market share on Shopify?
UpPromote Affiliate Marketing has lost the most market share this month among custom domain apps (-2.58pp). Sort the table by Change (Low to High) to see the full list of decliners.
5. Which countries drive the most custom domain Shopify app installs?
United States drives the largest share of custom domain app installs at 43.7%, followed by United Kingdom at 8.8% and Germany at 7.9%. Use the country picker on the third card to compare market leaders by country.
6. How many custom domain apps does ShopDigest track on Shopify?
ShopDigest tracks 96 custom domain 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 domain app differ from the #1 ranked app?
Rank reflects an app's current position in the Shopify App Store under custom domain (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 domain, UpPromote Affiliate Marketing leads on share; see the rankings tab for who currently holds #1 position.
