Dr Free Gift, BOGO Buy X Get Y

The Shopify App has received overwhelmingly positive reviews from users. Customers praise the app for its ease of use, prompt and helpful customer support, and a wide range of great features. The support team is highlighted for being responsive and efficient in resolving issues. Users appreciate the app's ability to increase sales through offering free gifts and incentives. However, there are a few concerns mentioned, such as the need for more advanced features, issues with duplicate products being created, and the lack of certain settings like limiting free gifts per customer. Overall, the app is highly recommended for its effectiveness in boosting sales and providing a positive customer experience.