Dr Free Gift, BOGO Buy X Get Y

The reviews for this Shopify app are overwhelmingly positive, with users praising the top-notch customer service, fast and detailed responses, and easy setup process. The app is commended for its great features, prompt support, and effectiveness in increasing sales. Users appreciate the affordability, user-friendly interface, and the ability to customize gifts. However, there are a few mentions of expectations for more advanced features and some minor issues with the app's functionality, such as creating duplicate products for free gifts and the need for improvements in gifting settings for returning customers. Overall, the app is highly recommended for its performance, support, and impact on sales growth.