Birthday Shopify Apps – Market Share Breakdown
(Updated September 2026) See which birthday 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.
Birthday Shopify Apps — Full Market Share Table
All tracked birthday 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 |  Klaviyo: Email Marketing & SMS | 81.01% | 15.72 | Climbing |
| 2 |  Brevo PushOwl: Email,Push,SMS | 7.76% | 5.70 | Declining |
| 3 |  Mailchimp Email SMS Marketing | 5.14% | 8.82 | Declining |
| 4 |  TxtCart AI: SMS Marketing | 3.06% | 0.36 | Climbing |
| 5 |  Birthday Upsell Discount | 1.22% | 1.10 | Declining |
| 6 |  Casa Loyalty Points & Rewards | 1.08% | 0.04 | Climbing |
| 7 |  Happy Birthday Email by UW | 0.37% | 0.23 | Declining |
| 8 |  AgeX ‑ Age Verification Popup | 0.09% | 0.02 | Climbing |
| 9 |  Happy Birthday Marketing | 0.07% | 0.14 | Declining |
| 10 |  Grid & Pixel Email‑SMS‑Popups | 0.06% | 0.04 | Declining |
Showing 1-10 out of 23
Key Insights:
- Klaviyo: Email Marketing & SMS holds 81.0% share of birthday app installs — 73.3pp ahead of Brevo PushOwl: Email,Push,SMS (7.8%).
- Top 3 apps (Klaviyo: Email Marketing & SMS, Brevo PushOwl: Email,Push,SMS, Mailchimp Email SMS Marketing) account for 93.9% of all birthday install share — a fragmented market.
- Klaviyo: Email Marketing & SMS is gaining share fastest this month (+15.72pp) — the largest single gainer among the top birthday apps by share.
- Mailchimp Email SMS Marketing is losing share fastest (-8.82pp) — could indicate a churning user base or a stronger challenger gaining ground.
Birthday Shopify Apps — Market Share Over Time
Monthly market share trajectory for the top 5 birthday 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 |
|---|---|---|---|---|---|---|
| Klaviyo: Email Marketing & SMS | 40.0%3.62 | 56.7%16.68 | 65.3%8.63 | 80.9%15.6 | 74.7%6.26 | 78.3%3.59 |
| Brevo PushOwl: Email,Push,SMS | 11.4%3.65 | 16.5%5.1 | 13.4%3.08 | 7.8%5.61 | 4.0%3.86 | 6.5%2.58 |
 Omnisend Email Marketing & SMS | — | — | — | — | 10.5% | 4.0%6.49 |
 Essent Loyalty Program Rewards | — | — | — | — | 2.6% | 3.9%1.28 |
| Mailchimp Email SMS Marketing | 38.4%4.03 | 15.7%22.7 | 13.9%1.73 | 5.2%8.77 | 2.8%2.34 | 2.6%0.16 |
Key Insights:
- Klaviyo: Email Marketing & SMS's share contracted from 82.3% → 78.3% over the charted period.
- Of the top 5 tracked birthday apps, 1 grew share and 4 lost share — challengers are eating into leader's share.
Top Birthday Shopify Apps by Country
Per-country market share rankings for birthday 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:
- Klaviyo: Email Marketing & SMS leads birthday apps in 3 of 4 tracked markets (United States, China, United Kingdom).
- Klaviyo: Email Marketing & SMS leads worldwide, but India bucks the trend — Birthday Upsell Discount leads there.
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Top 5 Apps in Birthday
- Birthday Upsell Discount — Leads birthday apps with 1.0% install share, rated 4.9★ — losing share this month.
- Happy Birthday Email by UW — Holds 0.6% of birthday app install share, rated 5.0★ — gaining share this month.
- Happy Birthday Marketing — Holds 0.2% of birthday app install share, rated 4.6★ — gaining share this month.
- Klaviyo: Email Marketing & SMS — Holds 78.3% of birthday app install share, rated 4.7★ — losing share this month.
- Birthday Email Marketing — Holds 0 of birthday app install share, rated 5.0★.
Birthday Shopify Apps — Frequently Asked Questions
1. Which birthday app has the highest market share on Shopify?
Klaviyo: Email Marketing & SMS ranks #1 by share among birthday apps at 81.0%, 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 birthday Shopify apps?
For birthday (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 birthday apps are gaining market share on Shopify?
Klaviyo: Email Marketing & SMS is gaining birthday app market share fastest this month, up +15.72pp versus 30 days ago. Switch the table sub-tab to "Market Share Changes" to see all gainers ordered by movement.
4. Which birthday apps are losing market share on Shopify?
Mailchimp Email SMS Marketing has lost the most market share this month among birthday apps (-8.82pp). Sort the table by Change (Low to High) to see the full list of decliners.
5. Which countries drive the most birthday Shopify app installs?
United States drives the largest share of birthday app installs at 41.5%, followed by United Kingdom at 8.2% and Australia at 6.6%. Use the country picker on the third card to compare market leaders by country.
6. How many birthday apps does ShopDigest track on Shopify?
ShopDigest tracks 96 birthday 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 birthday app differ from the #1 ranked app?
Rank reflects an app's current position in the Shopify App Store under birthday (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 birthday, Klaviyo: Email Marketing & SMS leads on share; see the rankings tab for who currently holds #1 position.
