--- title: "Back In Stock! Alert Engine vs XFlow Back in Stock Alerts: Shopify app comparison" description: "Compare Back In Stock! Alert Engine and XFlow Back in Stock Alerts on detected Shopify stores, App Store reviews, pricing, listed features and integrations." canonical_url: "https://shoplist.co/shopify-apps/compare/back-in-stock-alert-engine-vs-xflow-back-in-stock-automation" markdown_url: "https://shoplist.co/shopify-apps/compare/back-in-stock-alert-engine-vs-xflow-back-in-stock-automation.md" data_as_of: "Nov 11, 2026" --- # Back In Stock\! Alert Engine vs XFlow Back in Stock Alerts Shopify app comparison from Shoplist. Store counts as of Nov 11, 2026. ## At a glance - XFlow Back in Stock Alerts is detected on 6.8× as many Shopify stores as Back In Stock\! Alert Engine: 690 vs 102 as of Nov 11, 2026. - On the Shopify App Store: Back In Stock\! Alert Engine 4.7 from 27 reviews and XFlow Back in Stock Alerts 5.0 from 70 reviews. - Both list a free plan. Paid plans start at $4/month for Back In Stock\! Alert Engine and $9/month for XFlow Back in Stock Alerts. - Back In Stock\! Alert Engine lists 27 features XFlow Back in Stock Alerts’s listing doesn’t mention, including Abandoned cart, Analytics, Automations. ## Adoption | Measure | Back In Stock\! Alert Engine | XFlow Back in Stock Alerts | Ahead | | --- | --- | --- | --- | | Detected stores | 102 — as of Nov 11, 2026 | 690 — as of Nov 11, 2026 | XFlow Back in Stock Alerts | | Net store change, 28 days | \+4 — estimated | \+6 — estimated | | | Stores added, 28 days | 4 — new and returning | 16 — new and returning | XFlow Back in Stock Alerts | | Big-brand share | Not enough data | 14% — of stores of known size | | | Top store categories | Apparel & Accessories, Food, Beverages & Tobacco, Toys & Games | Apparel & Accessories, Health & Beauty, Home & Garden | | | Top store countries | United Kingdom, United States, Canada | United States, United Kingdom, India | | ## Reviews | Measure | Back In Stock\! Alert Engine | XFlow Back in Stock Alerts | Ahead | | --- | --- | --- | --- | | App Store rating | 4.7 ★ | 5.0 ★ | XFlow Back in Stock Alerts | | App Store reviews | 27 | 70 | XFlow Back in Stock Alerts | | New reviews, 28 days | Not enough data | Not enough data | | | Reviewers a year or more in | Not enough data | 0% | | ## Pricing | Measure | Back In Stock\! Alert Engine | XFlow Back in Stock Alerts | Ahead | | --- | --- | --- | --- | | Free plan | Yes | Yes | | | Lowest paid monthly plan | $4/month | $9/month | Back In Stock\! Alert Engine | | Longest free trial | 7 days | 7 days | | | Plans listed | 4 | 3 | | ## Listing | Measure | Back In Stock\! Alert Engine | XFlow Back in Stock Alerts | Ahead | | --- | --- | --- | --- | | Shopify category rank | \#23 — in Stock alerts | \#19 — in Stock alerts | XFlow Back in Stock Alerts | | Shopify App Charts | \#15 in Stock alerts | \#9 in Stock alerts | | | Built for Shopify | Yes | Yes | | | Launched | Dec 23, 2024 | Dec 1, 2025 | | | Languages | 1 — English | 3 — English, Italian, German | | | Developer | Script Engine | XFlow | | ## Listed features - 40 distinct features are listed across these App Store listings; 12 are listed by both. - Back In Stock\! Alert Engine lists 40 of them (100%). Listed only by Back In Stock\! Alert Engine: Abandoned cart, Analytics, Automations, Back-in-stock emails, Custom code, Custom fonts, Customer demand, Discounts, Editor tool, Email campaigns, Email capture list, Email domains, Follow-up emails, Import and export, Insights and tips, Inventory tracking, Localization, Low stock, Multi-language, Out of stock, Pop-ups, Price drop, Price drop emails, Reporting, Translation, Welcome emails, Win-back emails. - XFlow Back in Stock Alerts lists 12 of them (30%). ### Coverage by App Store category | Category | Back In Stock\! Alert Engine | XFlow Back in Stock Alerts | | --- | --- | --- | | Email marketing | 21/21 | 0/21 | | Email marketing › Campaign types | 9/9 | 0/9 | | Email marketing › Managing campaigns | 12/12 | 0/12 | | Stock alerts | 19/19 | 12/19 | | Stock alerts › Analytics and reporting | 4/4 | 2/4 | | Stock alerts › Customization | 5/5 | 4/5 | | Stock alerts › Notifications | 10/10 | 6/10 | A feature missing from a listing may still be supported; this compares what each App Store listing says. ## Integrations - No platform appears in every listing. - Only Back In Stock\! Alert Engine lists: notify me, out of stock, klaviyo, omnisend, pagefly. - XFlow Back in Stock Alerts lists no integrations. ## Pricing plans ### Back In Stock\! Alert Engine | Plan | Price | Free trial | Additional charges | | --- | --- | --- | --- | | Free Plan | Free | Not listed | None listed | | Basic Plan | $4/month | 7-day free trial | None listed | | Advanced Plan | $8/month | 7-day free trial | None listed | | Premium Plan | $12/month | 7-day free trial | None listed | ### XFlow Back in Stock Alerts | Plan | Price | Free trial | Additional charges | | --- | --- | --- | --- | | Free | Free | Not listed | None listed | | Starter | $9/month | 7-day free trial | Included $1,000 monthly attributed revenue; then \+$7 per additional $1,000 | | Growth | $19/month | 7-day free trial | Included $3,000 monthly attributed revenue; then \+$5 per additional $1,000 | ## Frequently asked questions ### Which is more popular, Back In Stock\! Alert Engine or XFlow Back in Stock Alerts? XFlow Back in Stock Alerts is detected on 6.8× as many Shopify stores as Back In Stock\! Alert Engine: 690 vs 102 as of Nov 11, 2026. ### Is Back In Stock\! Alert Engine or XFlow Back in Stock Alerts cheaper? Both list a free plan. Paid plans start at $4/month for Back In Stock\! Alert Engine and $9/month for XFlow Back in Stock Alerts. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits. ### Which has better reviews, Back In Stock\! Alert Engine or XFlow Back in Stock Alerts? On the Shopify App Store: Back In Stock\! Alert Engine 4.7 from 27 reviews and XFlow Back in Stock Alerts 5.0 from 70 reviews. ### What features does each app list that the other doesn’t? Back In Stock\! Alert Engine lists 27 the others don’t mention, such as Abandoned cart, Analytics, Automations, Back-in-stock emails. A feature missing from a listing may still be supported; this compares what each App Store listing says. ### Where does this comparison’s data come from? Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 11, 2026; estimated figures are labeled. ## Links - [Back In Stock\! Alert Engine vs XFlow Back in Stock Alerts on Shoplist](https://shoplist.co/shopify-apps/compare/back-in-stock-alert-engine-vs-xflow-back-in-stock-automation) - [Back In Stock\! Alert Engine on Shoplist](https://shoplist.co/shopify-apps/back-in-stock-alert-engine) ([Markdown](https://shoplist.co/shopify-apps/back-in-stock-alert-engine.md)) - [XFlow Back in Stock Alerts on Shoplist](https://shoplist.co/shopify-apps/xflow-back-in-stock-automation) ([Markdown](https://shoplist.co/shopify-apps/xflow-back-in-stock-automation.md)) ## Methodology Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts for Back In Stock\! Alert Engine and XFlow Back in Stock Alerts are as of Nov 11, 2026. “Not detectable from storefronts” means an app leaves no storefront trace, so Shoplist can’t count its stores. A row names who is ahead only when every app has a measured, unestimated figure. See [data methodology](https://shoplist.co/data-methodology.md).