Monster Cart Upsell

Monster Cart Upsell is one of the most-used upsell and cross-sell apps on Shopify: it adds product suggestions, free gift bars, progress toward a minimum threshold and post-purchase offers directly in the cart, without modifying the store's theme.

Monster Cart Upsell is a Shopify app designed to increase average order value (AOV) through suggestions and incentives shown in the cart and during checkout. The main feature is the cart drawer: instead of Shopify's standard cart, Monster Cart replaces or enhances it with a slide-out rich in persuasive elements. In the drawer you can show related or complementary products suggested automatically or configured manually (upsells and cross-sells), a progress bar toward free shipping or a gift, a gift with the threshold to reach, countdowns, custom messages and trust badges. Post-purchase upsell offers show additional proposals after the customer has completed the purchase, leveraging the high-availability moment. All features are customizable in design to match the store's theme. The app tracks AOV and conversion impact with built-in analytics.

For Shopify stores wanting to increase average order value with cart-integrated upsells and cross-sells, free shipping bars and post-purchase offers without technical changes to the theme.

Monster Cart Upsell has a free plan that lets you use all features up to $200 per month in extra sales generated by upsells. Paid plans start at $4.99 per month and increase based on the monthly volume of upsells generated. The volume-based pricing model is favorable for growing stores: you pay in proportion to results. A 14-day free trial on paid plans is available.