--- title: "REZ Preorder, Back In Stock vs Swym Back in Stock Alerts: Shopify app comparison" description: "Compare REZ Preorder, Back In Stock and Swym Back in Stock Alerts on detected Shopify stores, App Store reviews, pricing, listed features and integrations." canonical_url: "https://shoplist.co/shopify-apps/compare/rez-back-in-stock-notify-me-vs-swym-back-in-stock-alerts" markdown_url: "https://shoplist.co/shopify-apps/compare/rez-back-in-stock-notify-me-vs-swym-back-in-stock-alerts.md" data_as_of: "Nov 8, 2026" --- # REZ Preorder, Back In Stock vs Swym Back in Stock Alerts Shopify app comparison from Shoplist. Store counts as of Nov 8, 2026. ## At a glance - Swym Back in Stock Alerts is detected on 5× as many Shopify stores as REZ Preorder, Back In Stock: 16,681 vs 3,359 as of Nov 8, 2026. - On the Shopify App Store: REZ Preorder, Back In Stock 5.0 from 1,639 reviews and Swym Back in Stock Alerts 4.5 from 445 reviews. - Only REZ Preorder, Back In Stock lists a free plan. Paid plans start at $4.99/month for REZ Preorder, Back In Stock and $19.99/month for Swym Back in Stock Alerts. - REZ Preorder, Back In Stock lists 11 features Swym Back in Stock Alerts’s listing doesn’t mention, including Analytics, Consent collection, Custom alerts. ## Adoption | Measure | REZ Preorder, Back In Stock | Swym Back in Stock Alerts | Ahead | | --- | --- | --- | --- | | Detected stores | 3,359 — as of Nov 8, 2026 | 16,681 — as of Nov 8, 2026 | Swym Back in Stock Alerts | | Net store change, 28 days | −6 — estimated | −444 — estimated | | | Stores added, 28 days | 31 — new and returning | 133 — new and returning | Swym Back in Stock Alerts | | Big-brand share | 9% — of stores of known size | 20% — of stores of known size | | | Top store categories | Apparel & Accessories, Health & Beauty, Home & Garden | Apparel & Accessories, Home & Garden, Health & Beauty | | | Top store countries | United States, United Kingdom, Australia | United States, United Kingdom, Australia | | ## Reviews | Measure | REZ Preorder, Back In Stock | Swym Back in Stock Alerts | Ahead | | --- | --- | --- | --- | | App Store rating | 5.0 ★ | 4.5 ★ | REZ Preorder, Back In Stock | | App Store reviews | 1,639 | 445 | REZ Preorder, Back In Stock | | New reviews, 28 days | Not enough data | 2 | | | Reviewers a year or more in | 0% | Not enough data | | ## Pricing | Measure | REZ Preorder, Back In Stock | Swym Back in Stock Alerts | Ahead | | --- | --- | --- | --- | | Free plan | Yes | Not listed | | | Lowest paid monthly plan | $4.99/month | $19.99/month | REZ Preorder, Back In Stock | | Longest free trial | 7 days | 30 days | | | Plans listed | 4 | 3 | | ## Listing | Measure | REZ Preorder, Back In Stock | Swym Back in Stock Alerts | Ahead | | --- | --- | --- | --- | | Shopify category rank | \#6 — in Pre-orders | \#82 — in Stock alerts | | | Shopify App Charts | \#5 in Pre-orders | \#38 on the Shoplist 100 | | | Built for Shopify | Yes | No | | | Launched | May 26, 2025 | Oct 13, 2016 | | | Languages | 1 — English | 1 — English | | | Developer | REZ Commerce | Swym Corporation | | ## Listed features - 33 distinct features are listed across these App Store listings; 13 are listed by both. - REZ Preorder, Back In Stock lists 24 of them (73%). Listed only by REZ Preorder, Back In Stock: Analytics, Consent collection, Custom alerts, Email, Inventory reports, Inventory tracking, Notification templates, Out of stock, Promotions, Sales forecasting, Stock counter. - Swym Back in Stock Alerts lists 22 of them (67%). Listed only by Swym Back in Stock Alerts: Cross-sell emails, Email capture list, Manual alerts, Product recommendations, Segmentation, SMS, SMS capture list, Tagging, Triggers and rules. ### Coverage by App Store category | Category | REZ Preorder, Back In Stock | Swym Back in Stock Alerts | | --- | --- | --- | | Email marketing | 7/14 | 11/14 | | Email marketing › Campaign types | 4/6 | 5/6 | | Email marketing › Managing campaigns | 3/8 | 6/8 | | Stock alerts | 17/19 | 11/19 | | Stock alerts › Analytics and reporting | 5/5 | 2/5 | | Stock alerts › Customization | 6/6 | 4/6 | | Stock alerts › Notifications | 6/8 | 5/8 | 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. - REZ Preorder, Back In Stock lists no integrations. - Only Swym Back in Stock Alerts lists: Shopify POS, Shopify Flow, Klaviyo - Omnisend, Sailthru - Listrak, Bluecore - Bloomreach, dotDigital - Optimizely, Mailchimp - Ometria, Twillio - Postscript. ## Pricing plans ### REZ Preorder, Back In Stock | Plan | Price | Free trial | Additional charges | | --- | --- | --- | --- | | Free | Free | Not listed | None listed | | Basic | $4.99/month | 7-day free trial | $0.25 per preorder above limit • $1 per 100 emails above limit | | Growth | $14.99/month | 7-day free trial | $0.15 per preorder above limit • $1 per 100 emails above limit | | Scale | $28.99/month | 7-day free trial | $0.10 per preorder above limit • $1 per 100 emails above limit | ### Swym Back in Stock Alerts | Plan | Price | Free trial | Additional charges | | --- | --- | --- | --- | | Starter | $19.99/month | 30-day free trial | None listed | | Pro | $59.99/month | 30-day free trial | None listed | | Premium | $99.99/month | 30-day free trial | None listed | ## Frequently asked questions ### Which is more popular, REZ Preorder, Back In Stock or Swym Back in Stock Alerts? Swym Back in Stock Alerts is detected on 5× as many Shopify stores as REZ Preorder, Back In Stock: 16,681 vs 3,359 as of Nov 8, 2026. ### Is REZ Preorder, Back In Stock or Swym Back in Stock Alerts cheaper? Only REZ Preorder, Back In Stock lists a free plan. Paid plans start at $4.99/month for REZ Preorder, Back In Stock and $19.99/month for Swym 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, REZ Preorder, Back In Stock or Swym Back in Stock Alerts? On the Shopify App Store: REZ Preorder, Back In Stock 5.0 from 1,639 reviews and Swym Back in Stock Alerts 4.5 from 445 reviews. ### What features does each app list that the other doesn’t? REZ Preorder, Back In Stock lists 11 the others don’t mention, such as Analytics, Consent collection, Custom alerts, Email. Swym Back in Stock Alerts lists 9 the others don’t mention, such as Cross-sell emails, Email capture list, Manual alerts, Product recommendations. A feature missing from a listing may still be supported; this compares what each App Store listing says. ### Are stores switching between REZ Preorder, Back In Stock and Swym Back in Stock Alerts? 12 stores dropped one and added the other in the last 180 days. Which stores, and in which direction, is in Shoplist. ### 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 8, 2026; estimated figures are labeled. ## Links - [REZ Preorder, Back In Stock vs Swym Back in Stock Alerts on Shoplist](https://shoplist.co/shopify-apps/compare/rez-back-in-stock-notify-me-vs-swym-back-in-stock-alerts) - [REZ Preorder, Back In Stock on Shoplist](https://shoplist.co/shopify-apps/rez-back-in-stock-notify-me) ([Markdown](https://shoplist.co/shopify-apps/rez-back-in-stock-notify-me.md)) - [Swym Back in Stock Alerts on Shoplist](https://shoplist.co/shopify-apps/swym-back-in-stock-alerts) ([Markdown](https://shoplist.co/shopify-apps/swym-back-in-stock-alerts.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 REZ Preorder, Back In Stock and Swym Back in Stock Alerts are as of Nov 8, 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).