Shop-Sign-In Shopify Apps – Market Share Breakdown
(Updated September 2026) See which shop-sign-in Shopify apps dominate installs and how their share has shifted over time. This collection 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.
Shop-Sign-In Shopify Apps — Full Market Share Table
All tracked shop-sign-in 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 | 77.52% | 4.15 | Climbing |
| 2 |  Shopify Forms | 21.61% | 3.93 | Declining |
| 3 |  Octane AI: Advanced Quiz Maker | 0.62% | 0.08 | Climbing |
| 4 |  Original Wheelio spin pop‑ups | 0.25% | 0.30 | Declining |
Showing 1-4 out of 4
Key Insights:
- Klaviyo: Email Marketing & SMS holds 77.5% share of shop-sign-in app installs — 55.9pp ahead of Shopify Forms (21.6%).
- Top 3 apps (Klaviyo: Email Marketing & SMS, Shopify Forms, Octane AI: Advanced Quiz Maker) account for 99.8% of all shop-sign-in install share — a concentrated market.
- Klaviyo: Email Marketing & SMS is gaining share fastest this month (+4.15pp) — the largest single gainer among the top shop-sign-in apps by share.
- Shopify Forms is losing share fastest (-3.93pp) — could indicate a churning user base or a stronger challenger gaining ground.
Shop-Sign-In Shopify Apps — Market Share Over Time
Monthly market share trajectory for the top 5 shop-sign-in 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 | 43.7%3.78 | 66.5%22.82 | 73.5%7.05 | 77.3%3.81 | 80.7%3.38 | 82.1%1.4 |
| Shopify Forms | 53.4%3.46 | 31.9%21.42 | 25.4%6.58 | 21.7%3.71 | 18.4%3.29 | 16.8%1.59 |
| Octane AI: Advanced Quiz Maker | 1.1%0.01 | 0.7%0.39 | 0.5%0.15 | 0.7%0.2 | 0.7%0.06 | 1.0%0.31 |
| Original Wheelio spin pop‑ups | 1.9%0.3 | 0.9%1.03 | 0.5%0.32 | 0.3%0.29 | 0.2%0.02 | 0.1%0.12 |
Key Insights:
- Klaviyo: Email Marketing & SMS's share expanded from 76.0% → 82.1% over the charted period.
- Of the top 4 tracked shop-sign-in apps, 1 grew share and 3 lost share — leader is widening the gap.
Top Shop-Sign-In Shopify Apps by Country
Per-country market share rankings for shop-sign-in 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 shop-sign-in apps in 3 of 4 tracked markets (United States, China, United Kingdom).
- Klaviyo: Email Marketing & SMS leads worldwide, but India bucks the trend — Shopify Forms leads there.
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Top 4 Apps in Shop-Sign-In
- Klaviyo: Email Marketing & SMS — Leads shop-sign-in apps with 82.1% install share, rated 4.7★ — gaining share this month.
- Shopify Forms — Holds 16.8% of shop-sign-in app install share, rated 4.5★ — losing share this month.
- Octane AI: Advanced Quiz Maker — Holds 1.0% of shop-sign-in app install share, rated 4.9★ — gaining share this month.
- Original Wheelio spin pop‑ups — Holds 0.1% of shop-sign-in app install share, rated 4.7★ — losing share this month.
Shop-Sign-In Shopify Apps — Frequently Asked Questions
1. Which shop-sign-in app has the highest market share on Shopify?
Klaviyo: Email Marketing & SMS dominates the shop-sign-in category on Shopify with 77.5% of installs — 55.9pp ahead of Shopify Forms. 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 shop-sign-in Shopify apps?
For shop-sign-in apps, market share is estimated from each app's recent review velocity (reviews collected in the past 6 months) divided by the total reviews collected by all apps in the collection over the same window. Reviews are a proxy for installs since Shopify doesn't publish install counts.
3. Which shop-sign-in apps are gaining market share on Shopify?
Klaviyo: Email Marketing & SMS is gaining shop-sign-in app market share fastest this month, up +4.15pp versus 30 days ago. Switch the table sub-tab to "Market Share Changes" to see all gainers ordered by movement.
4. Which shop-sign-in apps are losing market share on Shopify?
Shopify Forms has lost the most market share this month among shop-sign-in apps (-3.93pp). Sort the table by Change (Low to High) to see the full list of decliners.
5. Which countries drive the most shop-sign-in Shopify app installs?
United States drives the largest share of shop-sign-in app installs at 42.1%, followed by United Kingdom at 7.8% and Australia at 6.8%. Use the country picker on the third card to compare market leaders by country.
6. How many shop-sign-in apps does ShopDigest track on Shopify?
ShopDigest tracks 4 shop-sign-in apps on the Shopify App Store. Market share, rankings, and review data refresh weekly so you can track competitive shifts as they happen.
