FluxCart

FluxCart adds upsell popups to your store without editing any theme code. When a customer adds a product to their cart, views their cart, or clicks checkout, a targeted offer appears with a discounted product they can add in one click. You control which products trigger each popup, what discount to apply, and how the popup looks. A built-in dashboard tracks impressions, conversions, and revenue generated so you can see what is working and adjust campaigns at any time