Best free Upsell and bundles Shopify apps in 2026 [Updated]

The Best Free Shopify upsell and bundle apps help merchants maximize sales through smart product combinations, volume discounts, and strategic cross-selling. From AI-powered marketing tools to back-in-stock alerts, these apps enable store owners to create compelling bundle offers, implement BOGO deals, showcase frequently bought together items, and set up quantity breaks - all without upfront costs. Whether you need product labels to create urgency, sales popups for social proof, or gift wrap options for additional revenue, these free solutions deliver essential features to increase average order value and improve conversion rates.