Back In Stock Shopify Apps – Analytics & Insights
(Updated September 2026) Track the top back in stock Shopify apps with live rankings, market share, geography, and review data — updated weekly from the Shopify App Store. This keyword page shows where each app stands today and how its position has shifted over time.
Top Back In Stock Shopify Apps Ranked Today
Top 10 back in stock Shopify apps ranked by current App Store position, with market share and review counts. Updated weekly.
| App | Rank | Market Share | Reviews |
|---|---|---|---|
 Notify Me! Back in Stock Alert | 1 | 44.76% 1.48 | 3,808 121 |
 Back In Stock,Notify Me: Kbite | 2 | 23.14% 0.12 | 4,172 131 |
 Preorder, Back In Stock ‑ STOQ | 3 1 | 17.12% 6.84 | 3,741 113 |
 Preorder, Back In Stock REZ | 4 1 | 10.65% 9.59 | 1,543 57 |
 Essent Preorder Back in Stock | 5 1 | 2.70% 1.28 | 1,278 40 |
 Amp Back in Stock & Preorder + | 6 1 | 0.50% 0.12 | 948 19 |
 PreOrder Globo | Back in Stock | 7 1 | 0.81% 0.30 | 1,936 36 |
 Notify Me, Back in Stock: CW | 8 3 | 0.12% 0.55 | 621 6 |
 Back In Stock | Restock Alerts | 9 3 | 0.00% | 0 0 |
 XFlow Back in Stock Alert | 10 1 | 0.04% 0.02 | 65 7 |
Key Insights:
- Notify Me! Back in Stock Alert commands 44.8% market share, 21.6pp ahead of Back In Stock,Notify Me: Kbite — a concentrated back in stock category.
- In the last 30 days, 5 apps climbed and 3 dropped in ranking among the top 10 tracked back in stock apps.
- Back In Stock,Notify Me: Kbite added the most new reviews this month (+131) — strong adoption momentum.
Live Ranking and Market Share Trends for Back In Stock Shopify Apps
Monthly ranking and market share trends for the top 5 back in stock Shopify apps over the past year — see how each app's App Store position and market share have shifted month by month.
Charts Data
| App | Apr 2026 | May 2026 | Jun 2026 | Jul 2026 | Aug 2026 | Sep 2026 |
|---|---|---|---|---|---|---|
| Notify Me! Back in Stock Alert | #3 | #21 | #11 | #21 | #2 | #11 |
| Back In Stock,Notify Me: Kbite | #2 | #11 | #21 | #11 | #1 | #21 |
| Preorder, Back In Stock ‑ STOQ | #1 | #32 | #41 | #4 | #4 | #31 |
| Preorder, Back In Stock REZ | #41 | #4 | #31 | #3 | #3 | #41 |
| Essent Preorder Back in Stock | #51 | #61 | #71 | #61 | #6 | #51 |
Key Insights:
- Notify Me! Back in Stock Alert's ranking improved from #2 to #1 over the charted period.
- 4 of 5 top back in stock apps improved their position; 1 declined — a mixed picture.
- Notify Me! Back in Stock Alert's market share is 44.8% — gaining +22.5pp since the start of the chart.
Back In Stock Shopify Apps — Market Share by Country
Top 5 countries driving installs for back in stock Shopify apps, with current market share and 30-day change versus the previous month.
| Country | Market Share | Change |
|---|---|---|
 United States | 37.2% | 0.68 |
 United Kingdom | 10.2% | 0.19 |
 Australia | 8.4% | 0.66 |
 Canada | 5.4% | 0.27 |
 Germany | 3.9% | 0.22 |
Key Insights:
- United States accounts for 37.2% of back in stock app installs — the single largest market.
- Top 3 markets (United States, United Kingdom, Australia) collectively cover 55.8% of all tracked back in stock installs — highly concentrated demand.
Fastest to 1,000 Reviews — Back In Stock Shopify Apps
Race-style view of how the top 5 back in stock Shopify apps reached 1,000 reviews — months since launch on the X-axis, cumulative review count on the Y-axis.
Charts Data
| App | Months to Reach 1,000 Reviews | Current Review Count |
|---|---|---|
| Preorder, Back In Stock REZ | 13 | 1,458 |
| Essent Preorder Back in Stock | 17 | 1,219 |
| Back In Stock,Notify Me: Kbite | 35 | 3,934 |
| Preorder, Back In Stock ‑ STOQ | 38 | 3,554 |
| Notify Me! Back in Stock Alert | 46 | 3,619 |
Key Insights:
- Preorder, Back In Stock REZ reached 1,000 reviews fastest — in 13 months since launch.
- Essent Preorder Back in Stock crossed 1,000 reviews in 17 months — 4 months behind Preorder, Back In Stock REZ.
- All 5 apps in this set have crossed 1,000 reviews — months-to-1k ranges from 13 to 46, a 33-month spread.
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Top Back In Stock Shopify Apps Ranked by Position
Notify Me! Back in Stock Alert dominates back in stock with 44.8% market share — a clear category leader Shopify merchants gravitate to first, 21.6pp ahead of Back In Stock,Notify Me: Kbite (23.1%). Preorder, Back In Stock ‑ STOQ sits at #3 with 17.1% share, rounding out the top tier. Together, the top 3 apps absorb 85.0% of all back in stock installs — a highly concentrated landscape with limited room for new entrants. Back In Stock | Restock Alerts is the standout mover this month, climbing 3 positions — a momentum signal worth tracking.
Notify Me! Back in Stock Alert's 44.8% share looks dominant, but Notify Me, Back in Stock: CW slipped 3 positions this month and the rest of the top 5 has reshuffled. Back In Stock apps are settled at the top and contested below — for merchants whose needs aren't a perfect Notify Me! Back in Stock Alert fit, the #2–#5 apps often surface better niche options.
Live Ranking and Market Share Trends Across Back In Stock Shopify Apps
Notify Me! Back in Stock Alert climbed from #2 (Sep 2025) to #1 (Sep 2026) — a 1-position gain among back in stock apps over the charted window. Across the top 5 plotted back in stock apps, 4 improved their ranking while 1 declined — the category is moving upward overall. Notify Me! Back in Stock Alert's share expanded +22.5pp from 22.2% (Sep 2025) to 44.8% (Sep 2026) — a sustained widening of the gap against other back in stock apps over this window.
5 of 5 plotted back in stock apps moved positions in this window — recent trajectory beats current rank as a signal when a category is reshuffling this actively.
Review Growth Velocity in Back In Stock — Which Apps Grew Fastest
Preorder, Back In Stock REZ reached 1,000 reviews in 13 months since launch — the fastest ramp among the top 5 back in stock apps tracked here. Essent Preorder Back in Stock in 17 months, Back In Stock,Notify Me: Kbite in 35 months, Preorder, Back In Stock ‑ STOQ in 38 months, and Notify Me! Back in Stock Alert took 46 months to cross the same milestone, a 33-month spread between the fastest and slowest in the set.
All 5 apps in this set have crossed 1,000 reviews, with current cumulative counts now ranging from 1,219 (Essent Preorder Back in Stock) to 3,934 (Back In Stock,Notify Me: Kbite) — a 3.2× difference, showing how far ahead the leader has continued to build past the milestone.
The 33-month gap between Preorder, Back In Stock REZ's and Notify Me! Back in Stock Alert's time-to-1,000 highlights how unevenly product-market fit landed across this back in stock set — the leader found its merchant audience early, while late-rampers took multiple years to reach the same review depth. For merchants comparing these apps today, slower-ramping apps may have closed the functionality gap but still operate on smaller review bases.
Top 5 Apps in Back In Stock
- Notify Me! Back in Stock Alert — Category leader for back in stock with 44.8% market share and 4.9★.
- Back In Stock,Notify Me: Kbite — Ranks #2 for back in stock with 23.1% market share and 5.0★.
- Preorder, Back In Stock ‑ STOQ — Climbed 1 position this month to rank #3 — 17.1% share, 5.0★.
- Preorder, Back In Stock REZ — Currently ranked #4 with 10.6% market share and 5.0★.
- Essent Preorder Back in Stock — Climbed 1 position this month to rank #5 — 2.7% share, 5.0★.
Back In Stock Shopify Apps — Frequently Asked Questions
1. What is the best back in stock app on Shopify?
Notify Me! Back in Stock Alert is the leading back in stock app on Shopify, holding 44.8% of category market share with 3,808 reviews — a clear default for most merchants.
2. Which back in stock app has the highest market share on Shopify?
Notify Me! Back in Stock Alert holds the highest market share among back in stock apps at 44.8% (+1.48pp vs 30 days ago). Market share here is estimated from each app's recent review velocity, with rank-weighted adjustment because positions in keyword search drive most installs.
3. How many back in stock apps are tracked on Shopify?
ShopDigest tracks 96 back in stock apps on the Shopify App Store. Rankings, market share, geography, and review data refresh weekly.
4. Which back in stock app is growing the fastest on Shopify?
Back In Stock | Restock Alerts has shown the strongest ranking momentum, climbing 3 positions over the past 30 days. Use the Rankings tab to see full month-over-month trajectories.
5. Where are back in stock apps most popular on Shopify?
United States has the highest concentration of back in stock app installs at 37.2%, followed by United Kingdom at 10.2%. The Geography tab shows the full country-by-country breakdown.
6. How is market share calculated for back in stock on Shopify keyword pages?
For keyword pages, 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. This reflects the reality that Shopify keyword search traffic concentrates heavily at the top of results.
7. Which back in stock app reached 1,000 reviews fastest on Shopify?
Preorder, Back In Stock REZ hit 1,000 reviews in 13 months since launch — the fastest review ramp among tracked back in stock Shopify apps. See the Review Champions chart above for the full race.
