Flex BundlesDocs
Documentation

Getting Started

Flex Bundles adds bundles to the cart natively, so they flow through checkout and fulfillment as broken-out line items with accurate pricing and inventory. This page gets you from install to a live bundle.

Install

  1. Install Flex Bundles from the Shopify App Store.
  2. Grant the requested permissions.
  3. Open the app. You land on the dashboard, which shows a four-step setup guide.

The guide's checkboxes are manual: tick each step off as you complete it, and the guide hides itself once all four are checked. You can also dismiss it at any time and bring it back with the Show setup guide button on the dashboard.

The four setup steps

1. Create a fixed bundle

This is the fastest path to something live, and it needs no theme changes. A fixed bundle attaches a set of components to a parent variant, so adding the parent to the cart automatically includes the components.

From the dashboard, choose Create bundle, then Fixed Bundle. Pick the parent product and variant, add the component variants and their quantities, and save. The bundle is active on your store right away (the parent product itself must be published or unlisted in Shopify). To see it work, add the parent variant to your cart.

2. Create a flex bundle

Flex bundles are customer-built: build-your-own, mix-and-match, and similar. Configuration lives on the product. Pricing is Parent Price or Component Sum, and the mode is decided by the payload your storefront sends: include a price on every component to sum them, or omit prices to use the parent variant's price.

Flex bundles are added to the cart from your storefront with a _components payload, so this step involves theme work. See Cart API Integration for the contract, and Bundle Types for how the pricing modes behave.

3. Add bundles to your store

Open the theme editor and place your bundle experience where you want it. For fixed bundles there is nothing to add beyond the parent product itself. For flex bundles this is where your builder UI goes.

4. Get your first bundle order

Once bundle orders start landing, the dashboard shows an AOV comparison: the AOV impact (the difference, with a percentage badge), your average order value with bundles, and without. When bundles are lifting AOV, it also estimates the additional revenue they have generated. The block only appears once you have bundle order data.

Where to go next

Need a hand?

If you would rather see it working before you build, book a demo with the founder from the link at the bottom of the setup guide in the app.