Propel Upsell Popup Cross Sell

The reviews are overwhelmingly positive, with most merchants praising the app for being easy to install, straightforward to use, and effective at increasing upsells, add-ons, and cart value. Many users say it helps drive sales, improves profits, and works well for related products, free gifts, warranties, and other promotional offers. A major highlight is the support team: reviewers repeatedly describe the support as fast, friendly, responsive, and willing to help with theme integration, customizations, and troubleshooting. Several users also appreciate that the app has a useful free plan or is completely free, making it attractive for small businesses and merchants looking for good value. The negative feedback is much less common, but it is important. A few reviewers report serious bugs or loopholes that could let customers exploit discounts, remove original items while keeping discounted upsells, or otherwise misuse the offer logic. Some users also mention issues with theme compatibility, leftover code after uninstalling, or confusion about feature availability on the free plan. Overall, the sentiment is strongly favorable, but the main concerns center on reliability, edge-case pricing logic, and transparency around plan limitations.