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 effective in gathering information from customers. The app is described as user-friendly, with great customer support and additional customizations available. However, some users mention a desire for more capabilities regarding custom CSS and a few encountered difficulties with features like A/B testing.