Both are BFS-certified, but they play different roles in your tech stack. Are you looking for a dedicated tool for product page discounts, or a unified system that maximizes revenue at every touchpoint—from the first click to the Thank-You page?

Kefi is a full-funnel revenue engine. It doesn't just create the bundle; it uses AI to suggest it and follows the customer through the cart and post-purchase stages to ensure no money is left on the table.
Bundler is a specialist in flexible discounting mechanics. It excels at providing highly customizable widgets, landing pages for specific deals, and a robust integration for Shopify POS users.
Kefi provides a wide variety of bundle formats designed for both simple and advanced merchandising strategies, giving merchants the flexibility to create exactly the type of offer that drives conversions. In comparison, Bundler excels at manual discount rules but lacks some of the automated and funnel-wide options Kefi offers.
These features allow Kefi to increase revenue even after the customer clicks “Buy”—a major advantage for merchants focused on maximizing AOV.

These features allow Kefi to increase revenue even after the customer clicks “Buy”—a major advantage for merchants focused on maximizing AOV.
Kefi enhances multiple stages of the customer journey with a "Success-Friendly" model.
Bundler performs well for simple bundle creation but scales based on feature access.

Kefi isn't just a bundle builder—it’s a complete revenue engine. It allows merchants to replace multiple apps (Slide Cart, Post-Purchase, Bundles) with one unified tool.
The AI knows what happened in the cart and uses it to suggest the right post-purchase offer.
One script instead of three means a faster, higher-converting site.
No surprise bills or "Success Taxes" when your revenue scales.