Early Bird: Preorder & Restock and REZ Back In Stock Notify Me are both Shopify apps designed to help merchants capture sales on out-of-stock or pre-launch products. Both apps offer preorder and back-in-stock notification capabilities, allowing merchants to gauge demand, secure early revenue, and reduce lost sales. They share core functionality like accepting partial payments and sending automated back-in-stock alerts. Early Bird emphasizes campaign management and caters to merchants launching new products or running seasonal promotions. REZ appears to prioritize ease of use and fast integration, focusing on adding 'Preorder' and 'Notify Me' widgets to product pages. While both offer similar functionalities, Early Bird leans toward businesses with complex preorder needs involving split shipments, deferred payments, and detailed performance tracking by product variant. It's better suited for merchants handling made-to-order items or products with long lead times. REZ seems targeted at merchants looking for a simpler, more straightforward solution for implementing preorders and back-in-stock notifications. The apps both claim to track performance and forecast inventory, although Early Bird explicitly highlights real-time tracking by product & variant, suggesting more granular analytics. Both apps can be used for seasonal drops.
38 reviews
44 reviews
Run preorder campaigns with partial pay, take backorders & send back-in-stock alerts to secure sales
Sell preorder & backorders with full/part payments. Notify me when out of stock, back in stock alert
| Rating | 4.9/5 | 5/5 |
Rating Early Bird: Preorder & Restock4.9/5 REZ Back In Stock Notify Me5/5 | ||
| Reviews | 38 | 44 |
Reviews Early Bird: Preorder & Restock38 REZ Back In Stock Notify Me44 | ||
| Focus | Campaign-based Preorders & Backorders | Simple Preorder & Back in Stock Widget |
Focus Early Bird: Preorder & RestockCampaign-based Preorders & Backorders REZ Back In Stock Notify MeSimple Preorder & Back in Stock Widget | ||
| Analytics Granularity | Detailed (by product & variant) | General (track demand, forecast inventory) |
Analytics Granularity Early Bird: Preorder & RestockDetailed (by product & variant) REZ Back In Stock Notify MeGeneral (track demand, forecast inventory) | ||
| Target Merchant | Complex Preorder Needs (Launches, Seasonal, Made-to-Order) | Simple Preorder Needs (Out-of-Stock Solutions) |
Target Merchant Early Bird: Preorder & RestockComplex Preorder Needs (Launches, Seasonal, Made-to-Order) REZ Back In Stock Notify MeSimple Preorder Needs (Out-of-Stock Solutions) | ||
| Shipment Options | Mixed cart support: split ship or hold | Not specified |
Shipment Options Early Bird: Preorder & RestockMixed cart support: split ship or hold REZ Back In Stock Notify MeNot specified | ||
| Customization | Email notifications for shipment delays/arrivals | Customize preorder button & restock notification |
Customization Early Bird: Preorder & RestockEmail notifications for shipment delays/arrivals REZ Back In Stock Notify MeCustomize preorder button & restock notification | ||
| Payment Options | Split/partial payments or $0 deposits | Full/part payments |
Payment Options Early Bird: Preorder & RestockSplit/partial payments or $0 deposits REZ Back In Stock Notify MeFull/part payments | ||
| Ease of use | Not Specified | Easy online support |
Ease of use Early Bird: Preorder & RestockNot Specified REZ Back In Stock Notify MeEasy online support | ||
For merchants requiring advanced features like split shipment options, real-time tracking by product variant, and automated email notifications for shipment updates, Early Bird: Preorder & Restock appears to be the better choice. Its campaign-based approach suits businesses running frequent product launches or dealing with complex preorder scenarios. For merchants seeking a quick and easy way to add basic preorder and back-in-stock functionality to their store, REZ Back In Stock Notify Me offers a more streamlined solution with a focus on widget-based implementation.
While REZ has a slightly higher rating and more reviews, this small difference may not be statistically significant. Ultimately, the best app depends on the specific complexity and scale of the merchant's preorder and backorder needs.
Early Bird provides real-time performance tracking by product and variant, whereas REZ offers general analytics to track demand and forecast inventory.
REZ seems easier to set up for basic back-in-stock alerts due to its widget-based approach.
Yes, Early Bird explicitly states it supports auto-collection of deferred payments.
Early Bird, with its campaign-based preorder manager, is better suited for managing complex preorder campaigns.
Both apps have excellent ratings (4.9/5 and 5/5). REZ has a slightly higher number of reviews, but the difference is not large enough to definitively conclude a significant difference in customer satisfaction.
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