Pop Up Discount by MITS

The reviews for this Shopify App are overwhelmingly positive, with users praising its ease of use, customization options, and professional appearance. Many users appreciate the ability to customize almost every aspect of the pop-up window and find it very neat and professional. The app is described as great, nice, and easy to use, with some users highlighting the excellent customer support. However, there are a few minor issues mentioned, such as the desire for more capabilities regarding custom CSS and an annoying review prompt in the theme editor. Overall, the app is highly recommended by users for its functionality and user-friendly experience.