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Kefi vs. Bundler: One-Click Bundle Builder or Full-Funnel Growth Engine?

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?

complete upsell + Bundle Funnel
Feature Coverage

Kefi supports a complete upsell + Bundle funnel

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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.

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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.

Key Functional Differences
Bundle Types

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.

Key Functional Differences
Upsell Capabilities

These features allow Kefi to increase revenue even after the customer clicks “Buy”—a major advantage for merchants focused on maximizing AOV.

upsell capabilities
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Slide Cart Upsells
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Free Shipping Goal Bar (inside slide cart)
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Countdown Timer (inside slide cart)
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Post-Purchase Upsell Offers
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Thank-You Page Upsell Offers
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Cart-Level Rules & Logic
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These features allow Kefi to increase revenue even after the customer clicks “Buy”—a major advantage for merchants focused on maximizing AOV.

Pricing, Scalability & Experience
The pricing difference is simple:
Kefi — Flat, Predictable & Designed for Full-Funnel Growth

Kefi enhances multiple stages of the customer journey with a "Success-Friendly" model.

  • $39.99/month Flat: All features included (AI, Slide Cart, Post-Purchase).
  • No "Success Tax": Your price stays the same even as your revenue grows.
  • Full-Funnel Impact: Increases AOV through product page personalization, in-cart incentives, and one-click post-purchase offers.
  • Ideal for: Brands scaling past $50k/mo who want predictable costs and maximum conversion touchpoints.
Revenue-Based Pricing

Bundler performs well for simple bundle creation but scales based on feature access.

  • "Pay-as-you-Grow" Model: Offers a Free Plan, with paid tiers at $6.99 and $9.99+.
  • Feature-Locked: Advanced tools like Analytics, Mix & Match, and Free Shipping are locked behind higher tiers.
  • Pre-Purchase Focus: Excellent for discount widgets but does not extend into post-purchase or full-funnel optimization.
  • Ideal for: Early-stage stores or brick-and-mortar shops needing POS support at a lower entry cost.
Kefi is Designed for Full-Funnel Revenue Growth
  • Product page personalization
  • In-cart upsells and incentives
  • One-click post-purchase offers
  • Thank-you page conversion boosts
  • AI bundles and recommendations
These combined touchpoints result in higher AOV and repeat conversions.
FBP Is Focused on
Pre-Purchase Bundling
FBP performs well for simple bundle creation but does not extend into full-funnel upsell optimization.
How Kefi Compares

Feature Comparison Table

BFS Certified
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Yes
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Yes
Primary Strength
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Gift-with-Purchase & BOGO
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Full-Funnel Upselling
BYOB Layouts
Standard Landing Page
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Sidebar & Footer Templates
Cheapest/Costliest Logic
No
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Yes
Mix & Match Sectional
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No (Shared list only)
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Yes (Step-by-step)
Product Page Builder
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Limited/Landing Page
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Native on Product Page
Integrated Slide Cart
No
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Yes
Post-Purchase Upsells
no
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yes
Thank-You Page Upsells
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No
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Yes
Unlimited Orders
Plan Dependent
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Yes ($39.99 Plan)
Slide Cart Upsells
No
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Yes
Countdown Timer (Cart)
No
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Yes
Cart-Level Rules
No
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Yes
Product Add-on Popups
No (Focuses on GWP)
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Yes (Interactive)
Thank-You Page Upsells
No
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Yes
Pricing Model
Revenue-based (cost rises with sales)
$39.99/mo flat (no cap)
High-Growth Store Friendly
No
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Yes
How Kefi Compares

Feature Comparison Table

BFS Certified
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Yes
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Yes
Primary Strength
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Discount Widgets & POS
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Full-Funnel Upselling
AI Recommendations
Manual Setup
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Data-Driven AI
Mix & Match
Yes (Higher Tiers)
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Yes
Slide Cart Upsells
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No
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Yes
Spending Milestones (Inside Cart)
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No
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Yes
Post-Purchase Upsells
No
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Yes
Buy N, Discount on Cheapest/Costliest (Offer Configuration)
no
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yes
Thank-You Page Upsells
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No
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Yes
Product Add-ons
Basic Only
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Page + Popup
Pricing Model
Tiered (Feature-locked)
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$39.99/mo flat (no cap)
Countdown Timer (Cart)
No
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Yes
Bundle Analytics
Analytics on higher-tier plans
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Built-in performance dashboards
Post-Purchase Upsells
No
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Yes
Thank-You Page Upsells
No
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Yes
Pricing Model
Revenue-based (cost rises with sales)
$39.99/mo flat (no cap)
High-Growth Store Friendly
No
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Yes
How Kefi Compares

Feature Comparison Table

BFS Certified
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Yes
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Yes
Mix & Match
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Yes (Regular Only)
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Yes (Regular + Sectional)
Build Your Own Box
No
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Yes
Product Page Bundle Builder
No
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Yes
BXGY / BOGO
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Yes
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Yes
Volume Discounts
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Yes
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Yes
Buy N, Discount on Cheapest/Costliest
No
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Yes
AI Bundles
Limited (FBT only)
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Yes (All types)
Frequently Bought Together
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Yes
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Yes
Product Add-ons
Basic Only
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Page + Popup
Slide Cart Upsells
No
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Yes
Countdown Timer (Cart)
No
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Yes
Cart-Level Rules
No
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Yes
Post-Purchase Upsells
No
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Yes
Thank-You Page Upsells
No
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Yes
Pricing Model
Revenue-based (cost rises with sales)
$39.99/mo flat (no cap)
High-Growth Store Friendly
No
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Yes

Why Scaling Merchants Choose Kefi

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.

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Unified Data

The AI knows what happened in the cart and uses it to suggest the right post-purchase offer.

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Site Speed

One script instead of three means a faster, higher-converting site.

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Predictability

No surprise bills or "Success Taxes" when your revenue scales.

Final Verdict
Choose Bundler if you have a physical store using Shopify POS or need specific dedicated landing pages. Choose Kefi if you want to automate your AOV growth using AI and capture extra revenue at every stage of the funnel—especially Post-Purchase.