The app Booster Kit - Upsell & Cross Sell is an incredibly user-friendly and intuitive Shopify upsell app. Set up cross-sell and up-sell offers: advise upgrading or suggest related products to boost AOV when a customer adds them to their cart or checks out in the cart.
By cross-selling other products or offering specialized services on the thank-you page following checkout, you can increase your revenue from the same clients.
One Click Upsell and Cross Sell notifications are easy to set up and configure, and they look fantastic on all devices.