Preorder, Back in stock Duck

The reviews are overwhelmingly positive, with merchants consistently praising the app’s ease of use, fast setup, and reliable performance for preorder and back-in-stock workflows. A major strength highlighted throughout is the customer support: reviewers repeatedly mention quick responses, live help, proactive troubleshooting, and staff members who go out of their way to customize buttons, emails, layouts, and other details to match store branding. Many users also appreciate that the app offers useful features even on the free plan, feels well organized, and can help drive sales by making preorder and notification flows simple to manage. The main negative aspect is not about the app’s core functionality, but rather that a few reviewers were still in the testing or trial phase and had not yet fully used all features. Some also noted small issues or edge cases, such as variant-switching behavior or Shopify-related setup problems, though these were generally resolved quickly by support. Overall, the feedback suggests a strong, dependable app whose biggest differentiator is exceptional, hands-on customer service.