BundleForge applies bundle discounts at checkout using Shopify Functions. Discounts work with every payment method, accelerated checkout, and Shopify POS. The app supports six bundle types: static, mix-and-match, tiered, BOGO, recurring, and virtual options. It recommends product pairings by analyzing order history, and lets you A/B test bundle offers to compare results. Bundle performance is tracked with a dedicated analytics dashboard.