Custom Alerts Shopify Apps – Analytics & Insights
(Updated September 2026) Track the top custom alerts 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 Custom Alerts Shopify Apps Ranked Today
Top 10 custom alerts Shopify apps ranked by current App Store position, with market share and review counts. Updated weekly.
| App | Rank | Market Share | Reviews |
|---|---|---|---|
 Back In Stock,Notify Me: Kbite | 1 | 41.92% 2.13 | 4,133 140 |
 Notify Me! Back in Stock Alert | 2 1 | 24.65% 9.96 | 3,771 123 |
 Preorder, Back In Stock ‑ STOQ | 3 1 | 17.83% 7.82 | 3,696 105 |
 Preorder, Back In Stock REZ | 4 2 | 11.07% 20.21 | 1,529 82 |
 PreOrder Globo | Back in Stock | 5 | 2.52% 0.14 | 1,924 41 |
 Essent Preorder Back in Stock | 6 | 1.41% 0.04 | 1,265 40 |
 Preorder, Back in stock Duck | 7 2 | 0.30% 0.19 | 514 23 |
 Stockie Inventory Management | 8 1 | 0.13% 0.03 | 152 22 |
 Easyteam POS Time Clock In | 9 1 | 0.05% 0.02 | 320 9 |
 Early Bird: Preorder & Restock | 10 1 | 0.01% 0.00 | 75 4 |
Key Insights:
- Back In Stock,Notify Me: Kbite commands 41.9% market share, 17.3pp ahead of Notify Me! Back in Stock Alert — a concentrated custom alerts category.
- In the last 30 days, 4 apps climbed and 3 dropped in ranking among the top 10 tracked custom alerts apps.
- Back In Stock,Notify Me: Kbite added the most new reviews this month (+140) — strong adoption momentum.
Live Ranking and Market Share Trends for Custom Alerts Shopify Apps
Monthly ranking and market share trends for the top 5 custom alerts 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 |
|---|---|---|---|---|---|---|
| Back In Stock,Notify Me: Kbite | — | #2 | #11 | #1 | #1 | #1 |
| Notify Me! Back in Stock Alert | — | #4 | #31 | #3 | #21 | #2 |
| Preorder, Back In Stock ‑ STOQ | — | #1 | #43 | #4 | #4 | #31 |
| Preorder, Back In Stock REZ | — | #3 | #21 | #2 | #31 | #41 |
| PreOrder Globo | Back in Stock | — | #6 | #51 | #5 | #5 | #5 |
Key Insights:
- Back In Stock,Notify Me: Kbite's ranking improved from #2 to #1 over the charted period.
- 3 of 5 top custom alerts apps improved their position; 2 declined — a mixed picture.
- Back In Stock,Notify Me: Kbite's market share is 41.9% — gaining +20.7pp since the start of the chart.
Custom Alerts Shopify Apps — Market Share by Country
Top 5 countries driving installs for custom alerts Shopify apps, with current market share and 30-day change versus the previous month.
| Country | Market Share | Change |
|---|---|---|
 United States | 36.1% | 2.34 |
 United Kingdom | 10.8% | 0.24 |
 Australia | 7.9% | 0.94 |
 Canada | 5.9% | 0.14 |
 Germany | 4.1% | 0.29 |
Key Insights:
- United States accounts for 36.1% of custom alerts app installs — the single largest market.
- Top 3 markets (United States, United Kingdom, Australia) collectively cover 54.8% of all tracked custom alerts installs — highly concentrated demand.
Fastest to 1,000 Reviews — Custom Alerts Shopify Apps
Race-style view of how the top 5 custom alerts 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 |
| 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 |
| PreOrder Globo | Back in Stock | 76 | 1,851 |
Key Insights:
- Preorder, Back In Stock REZ reached 1,000 reviews fastest — in 13 months since launch.
- Back In Stock,Notify Me: Kbite crossed 1,000 reviews in 35 months — 22 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 76, a 63-month spread.
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Top Custom Alerts Shopify Apps Ranked by Position
Back In Stock,Notify Me: Kbite dominates custom alerts with 41.9% market share — a clear category leader Shopify merchants gravitate to first, 17.3pp ahead of Notify Me! Back in Stock Alert (24.7%). Preorder, Back In Stock ‑ STOQ sits at #3 with 17.8% share, rounding out the top tier. Together, the top 3 apps absorb 84.4% of all custom alerts installs — a highly concentrated landscape with limited room for new entrants. Preorder, Back in stock Duck is the standout mover this month, climbing 2 positions — a momentum signal worth tracking.
Back In Stock,Notify Me: Kbite's 41.9% share looks dominant, but Preorder, Back In Stock REZ slipped 2 positions this month and the rest of the top 5 has reshuffled. Custom Alerts apps are settled at the top and contested below — for merchants whose needs aren't a perfect Back In Stock,Notify Me: Kbite fit, the #2–#5 apps often surface better niche options.
Live Ranking and Market Share Trends Across Custom Alerts Shopify Apps
Back In Stock,Notify Me: Kbite climbed from #2 (May 2026) to #1 (Sep 2026) — a 1-position gain among custom alerts apps over the charted window. Across the top 5 plotted custom alerts apps, 3 improved their ranking while 2 declined — the category is moving upward overall. Back In Stock,Notify Me: Kbite's share expanded +20.7pp from 21.2% (May 2026) to 41.9% (Sep 2026) — a sustained widening of the gap against other custom alerts apps over this window.
5 of 5 plotted custom alerts 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 Custom Alerts — 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 custom alerts apps tracked here. Back In Stock,Notify Me: Kbite in 35 months, Preorder, Back In Stock ‑ STOQ in 38 months, Notify Me! Back in Stock Alert in 46 months, and PreOrder Globo | Back in Stock took 76 months to cross the same milestone, a 63-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 1,458 (Preorder, Back In Stock REZ) to 3,934 (Back In Stock,Notify Me: Kbite) — a 2.7× difference, showing how far ahead the leader has continued to build past the milestone.
The 63-month gap between Preorder, Back In Stock REZ's and PreOrder Globo | Back in Stock's time-to-1,000 highlights how unevenly product-market fit landed across this custom alerts 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 Custom Alerts
- Back In Stock,Notify Me: Kbite — Category leader for custom alerts with 41.9% market share and 5.0★.
- Notify Me! Back in Stock Alert — Climbed 1 position this month to rank #2 — 24.7% share, 4.9★.
- Preorder, Back In Stock ‑ STOQ — Climbed 1 position this month to rank #3 — 17.8% share, 5.0★.
- Preorder, Back In Stock REZ — Currently ranked #4 with 11.1% market share and 5.0★.
- PreOrder Globo | Back in Stock — Ranks #5 for custom alerts with 2.5% market share and 4.9★.
Custom Alerts Shopify Apps — Frequently Asked Questions
1. What is the best custom alerts app on Shopify?
Back In Stock,Notify Me: Kbite is the leading custom alerts app on Shopify, holding 41.9% of category market share with 4,133 reviews — a clear default for most merchants.
2. Which custom alerts app has the highest market share on Shopify?
Back In Stock,Notify Me: Kbite holds the highest market share among custom alerts apps at 41.9% (+2.13pp 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 custom alerts apps are tracked on Shopify?
ShopDigest tracks 96 custom alerts apps on the Shopify App Store. Rankings, market share, geography, and review data refresh weekly.
4. Which custom alerts app is growing the fastest on Shopify?
Preorder, Back in stock Duck has shown the strongest ranking momentum, climbing 2 positions over the past 30 days. Use the Rankings tab to see full month-over-month trajectories.
5. Where are custom alerts apps most popular on Shopify?
United States has the highest concentration of custom alerts app installs at 36.1%, followed by United Kingdom at 10.8%. The Geography tab shows the full country-by-country breakdown.
6. How is market share calculated for custom alerts 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 custom alerts 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 custom alerts Shopify apps. See the Review Champions chart above for the full race.
