Checkout Upsell Shopify Apps – Market Share Breakdown
(Updated September 2026) See which checkout upsell 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.
Checkout Upsell Shopify Apps — Full Market Share Table
All tracked checkout upsell 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 |  SMART Checkout Rules & Upsells | 56.85% | 0.31 | Declining |
| 2 |  Aftersell Post Purchase Upsell | 22.11% | 6.53 | Climbing |
| 3 |  Upsell & Cross Sell — Selleasy | 8.03% | 0.93 | Declining |
| 4 |  Kaching Post Purchase Upsell | 4.81% | 2.63 | Declining |
| 5 |  BOGOS: Free Gift Bundle Upsell | 4.22% | 0.82 | Declining |
| 6 |  Monk Free Gift BOGO & Upsell | 0.67% | 0.10 | Declining |
| 7 |  Wiz: Checkout Upsell | 0.64% | 0.35 | Climbing |
| 8 |  Upsell.com ‑ ReConvert Upsell | 0.63% | 0.09 | Climbing |
| 9 |  UpsellPlus Checkout Upsell | 0.61% | 1.80 | Declining |
| 10 |  One Click Upsell ‑ Zipify OCU | 0.49% | 0.06 | Declining |
Showing 1-10 out of 25
Key Insights:
- SMART Checkout Rules & Upsells holds 56.9% share of checkout upsell app installs — 34.7pp ahead of Aftersell Post Purchase Upsell (22.1%).
- Top 3 apps (SMART Checkout Rules & Upsells, Aftersell Post Purchase Upsell, Upsell & Cross Sell — Selleasy) account for 87.0% of all checkout upsell install share — a fragmented market.
- Aftersell Post Purchase Upsell is gaining share fastest this month (+6.53pp) — the largest single gainer among the top checkout upsell apps by share.
- Kaching Post Purchase Upsell is losing share fastest (-2.63pp) — could indicate a churning user base or a stronger challenger gaining ground.
Checkout Upsell Shopify Apps — Market Share Over Time
Monthly market share trajectory for the top 5 checkout upsell 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 |
|---|---|---|---|---|---|---|
| Upsell & Cross Sell — Selleasy | 1.0%0.42 | 9.3%8.34 | 9.0%0.33 | 8.0%1.01 | 10.2%2.27 | 55.5%45.31 |
| Aftersell Post Purchase Upsell | 19.3%3.86 | 36.8%17.5 | 15.6%21.21 | 21.9%6.31 | 20.9%0.99 | 17.6%3.36 |
| SMART Checkout Rules & Upsells | — | 5.9% | 57.2%51.29 | 57.2%0.01 | 51.3%5.89 | 15.7%35.56 |
| Kaching Post Purchase Upsell | 30.4%11.5 | 21.4%8.92 | 7.4%14.02 | 4.8%2.62 | 8.6%3.84 | 5.0%3.61 |
| UpsellPlus Checkout Upsell | 7.5%4.81 | 7.3%0.18 | 2.4%4.9 | 0.6%1.84 | 3.7%3.13 | 2.5%1.14 |
Key Insights:
- Upsell & Cross Sell — Selleasy's share expanded from 1.2% → 55.5% over the charted period.
- Of the top 5 tracked checkout upsell apps, 5 grew share and 0 lost share — leader is widening the gap.
Top Checkout Upsell Shopify Apps by Country
Per-country market share rankings for checkout upsell 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:
- SMART Checkout Rules & Upsells leads checkout upsell apps in all 4 tracked markets — United States, India, China, United Kingdom.
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Top 5 Apps in Checkout Upsell
- UpsellPlus Checkout Upsell — Leads checkout upsell apps with 2.5% install share, rated 5.0★ — gaining share this month.
- Upsell & Cross Sell — Selleasy — Holds 55.5% of checkout upsell app install share, rated 4.9★ — gaining share this month.
- Aftersell Post Purchase Upsell — Holds 17.6% of checkout upsell app install share, rated 4.8★ — gaining share this month.
- SMART Checkout Rules & Upsells — Holds 15.7% of checkout upsell app install share, rated 5.0★ — losing share this month.
- Kaching Post Purchase Upsell — Holds 5.0% of checkout upsell app install share, rated 5.0★ — losing share this month.
Checkout Upsell Shopify Apps — Frequently Asked Questions
1. Which checkout upsell app has the highest market share on Shopify?
SMART Checkout Rules & Upsells ranks #1 by share among checkout upsell apps at 56.9%, 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 checkout upsell Shopify apps?
For checkout upsell (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 checkout upsell apps are gaining market share on Shopify?
Aftersell Post Purchase Upsell is gaining checkout upsell app market share fastest this month, up +6.53pp versus 30 days ago. Switch the table sub-tab to "Market Share Changes" to see all gainers ordered by movement.
4. Which checkout upsell apps are losing market share on Shopify?
Kaching Post Purchase Upsell has lost the most market share this month among checkout upsell apps (-2.63pp). Sort the table by Change (Low to High) to see the full list of decliners.
5. Which countries drive the most checkout upsell Shopify app installs?
United States drives the largest share of checkout upsell app installs at 30.1%, followed by United Kingdom at 8.8% and Australia at 6.8%. Use the country picker on the third card to compare market leaders by country.
6. How many checkout upsell apps does ShopDigest track on Shopify?
ShopDigest tracks 96 checkout upsell 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 checkout upsell app differ from the #1 ranked app?
Rank reflects an app's current position in the Shopify App Store under checkout upsell (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 checkout upsell, SMART Checkout Rules & Upsells leads on share; see the rankings tab for who currently holds #1 position.
