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 | 80.44% | 1.85 | Declining |
| 2 |  Shopify Forms | 18.29% | 1.72 | Climbing |
| 3 |  Octane AI: Advanced Quiz Maker | 1.16% | 0.12 | Climbing |
| 4 |  Original Wheelio spin pop‑ups | 0.12% | 0.01 | Climbing |
Showing 1-4 out of 4
Key Insights:
- Klaviyo: Email Marketing & SMS holds 80.4% share of shop-sign-in app installs — 62.2pp ahead of Shopify Forms (18.3%).
- Top 3 apps (Klaviyo: Email Marketing & SMS, Shopify Forms, Octane AI: Advanced Quiz Maker) account for 99.9% of all shop-sign-in install share — a fragmented market.
- Shopify Forms is gaining share fastest this month (+1.72pp) — the largest single gainer among the top shop-sign-in apps by share.
- Klaviyo: Email Marketing & SMS is losing share fastest (-1.85pp) — 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 | Jun 2026 | Jul 2026 | Aug 2026 | Sep 2026 | Oct 2026 | Nov 2026 |
|---|---|---|---|---|---|---|
| Klaviyo: Email Marketing & SMS | 73.1%7.02 | 77.0%3.91 | 80.4%3.38 | 81.4%0.99 | 82.8%1.45 | 80.4%2.39 |
| Shopify Forms | 25.8%6.55 | 22.0%3.81 | 18.7%3.28 | 17.4%1.26 | 16.0%1.41 | 18.3%2.26 |
| Octane AI: Advanced Quiz Maker | 0.6%0.15 | 0.8%0.20 | 0.7%0.07 | 1.1%0.40 | 1.0%0.05 | 1.2%0.13 |
| Original Wheelio spin pop‑ups | 0.6%0.33 | 0.3%0.30 | 0.2%0.02 | 0.1%0.12 | 0.1%0.01 | 0.1%0.02 |
Key Insights:
- Klaviyo: Email Marketing & SMS's share expanded from 66.8% → 80.4% 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.
United States
India
China
United KingdomKey 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.
Top 4 Apps in Shop-Sign-In
- Shopify Forms — Leads shop-sign-in apps with 18.3% install share, rated 4.5★ — gaining share this month.
- Klaviyo: Email Marketing & SMS — Holds 80.4% of shop-sign-in app install share, rated 4.7★ — losing share this month.
- Octane AI: Advanced Quiz Maker — Holds 1.2% of shop-sign-in app install share, rated 4.7★ — gaining share this month.
- Original Wheelio spin pop‑ups — Holds 0.1% of shop-sign-in app install share, rated 4.7★.
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 ranks #1 by share among shop-sign-in apps at 80.4%, 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 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?
Shopify Forms is gaining shop-sign-in app market share fastest this month, up +1.72pp 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?
Klaviyo: Email Marketing & SMS has lost the most market share this month among shop-sign-in apps (-1.85pp). 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 42.9%, followed by Australia at 7.6% and United Kingdom at 7.5%. 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.
7. Why does the highest-share shop-sign-in app differ from the #1 ranked app?
Rank reflects an app's current position in the Shopify App Store under shop-sign-in (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 shop-sign-in, Klaviyo: Email Marketing & SMS leads on share; see the rankings tab for who currently holds #1 position.
