Shopify App Comparison 2026

BST Frequently Bought Together

5.070 reviews
VS

Advanced Bundle Builder | PBC

4.617 reviews

Which Shopify upsell app increases AOV more? Compare pricing, features, ratings & real merchant reviews for BST and Advanced Bundle Builder | PBC to find the best fit for your store.

Maximize revenue with AI-powered frequently bought together cross-sell bundles. Amazon-style design, mobile-first, with advanced analytics.

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Key Features

  • AI-powered product recommendations based on consumer purchase behavior
  • Amazon-style "frequently bought together" widget design
  • Mobile-first, fully customizable widget compatible with most themes
  • Bundle discount options with percentage or fixed amount configurations
  • In-depth analytics dashboard tracking clicks, conversions, and revenue

Verdict on BST

BST is the best option if your primary cross-sell strategy is Amazon-style "frequently bought together" recommendations. The AI-powered suggestions are genuinely smart, and the mobile-first design ensures bundles look great on every device. The free plan is limited to 1 manual bundle, but the Core plan unlocks AI recommendations at a fair price. If you want focused cross-sell rather than a full bundle builder, BST delivers.

Built for Shopify

Increase AOV with custom gift boxes, mix-and-match bundles, and volume discounts.

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Key Features

  • Customize design and layout to match your brand aesthetic
  • Display bundles on dedicated pages or embed on product/collection pages
  • Single and multiple SKU support with automatic inventory tracking
  • Mix-and-match, custom bundles, and gift boxes in one platform
  • Fixed, flat, and tiered discounts with conditional logic

Verdict on Advanced

Advanced Bundle Builder by Polar Bear Commerce offers solid bundle building with Built for Shopify certification at a competitive $9.99/month. The personal account manager is a nice touch for setup assistance. At 4.6 stars with 17 reviews, it is still growing but the conditional logic and multi-layout support make it a capable option.

Frequently Asked Questions

How does the AI recommendation work?

BST analyzes your store's purchase history to identify products frequently bought together. The AI then automatically suggests these pairings on product pages, improving over time as more purchase data is collected.

Can I place bundles sitewide?

Sitewide placement is available on the Pro plan. The Free and Core plans support placement on specific product pages and collection pages.

Does it work on mobile?

Yes, BST is built mobile-first. The widget automatically adapts to screen size and is designed to look great on phones, tablets, and desktops.

Can I embed bundles on product pages?

Yes, you can display bundles on dedicated pages or embed them directly on product and collection pages for maximum visibility.

Does it track inventory automatically?

Yes, Advanced Bundle Builder supports both single and multiple SKU modes with automatic inventory tracking to prevent overselling.