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Merchant Foundry
Shopify

Product Add-ons + Bundler

Add-ons and fixed bundles built on Shopify's native bundle primitives.

A Shopify app for product add-ons and fixed bundles that uses Shopify's first-party bundle API instead of duplicate SKUs and discount hacks. Native checkout, native reporting, clean inventory.

What it does

Add-ons + Bundler in detail

  • Native bundles, not hacks

    Bundles are real Shopify products created through the Admin API's bundle primitives. Checkout, reporting, and inventory behave the way Shopify intends.

  • Add-ons on the product page

    Offer gift wrap, warranties, accessories, or engraving alongside the main product, with pricing that flows into the cart correctly.

  • Inventory your way

    Choose per bundle whether availability derives from component stock or the bundle carries its own SKU for pre-packed kits.

  • Variant-synced components

    Surface a component's size or colour options on the bundle product and map the shopper's choice to the right component variant.

  • Meets merchants where they work

    Admin UI extensions on native product pages let you create a bundle from a product or see which bundles include it.

  • Performance visibility

    See which bundles and add-ons sell, without stitching reports together.

How it works

From install to live

  1. Pick the component products and set quantities.

  2. Choose pinned or variant-synced options for each component.

  3. Set pricing and the inventory mode.

  4. Publish. The bundle is a normal product in your theme.

Most bundle apps route around Shopify. This one builds on it. Bundles are first-class products with native checkout, native reporting, and inventory semantics that hold up when you look at the numbers.

Who it’s for

Built for

  • Brands that sell kits, sets, or starter packs.
  • Merchants who have been burned by bundle apps that break inventory.

FAQ

Add-ons + Bundler FAQ

Does it need a custom theme?

No. Bundles render through Shopify's native product templates, so any Online Store 2.0 theme works without changes.

What about mix-and-match or volume discounts?

The first release focuses on fixed bundles and add-ons. Mix-and-match and volume pricing are candidates for later phases.

Get early access to Add-ons + Bundler

Join the waitlist for priority onboarding, direct input on the roadmap, and founding pricing when it launches.

No spam. 1 to 2 product emails per month.