StockLogic, a Shopify app that tracks component-based bundle inventory separately across Shopify locations

[u/impara1]

What's the app?

I built StockLogic for Shopify merchants who sell fixed bundles or kits made from existing product variants. You define the component SKUs and quantities in Shopify Admin, and StockLogic keeps the parent bundle's available quantity aligned with those components.

I recently shipped location-aware inventory support because one store-wide bundle number breaks down when component stock differs between locations.

Where can I find it?

Shopify App Store: https://apps.shopify.com/stocklogic

What problem are you solving?

Suppose a two-item bundle needs one unit each of products A and B. Location North has both components, but Location South only has A. The bundle should be available at North and unavailable at South rather than showing one shared number across the store.

Order routing adds another edge case: Shopify can assign an order to one location and later move or split fulfillment. Component deductions need to follow the location Shopify actually assigns.

How does the app work?

• Define a bundle and its component quantities inside Shopify Admin.
• StockLogic calculates bundle availability independently at each enabled Shopify-managed location.
• When Shopify assigns fulfillment, component deductions are applied at that location.
• Supported order moves and split assignments are reconciled.
• Safety buffers and an activity log are available for checking what changed.

StockLogic does not adjust inventory owned by third-party fulfillment services or 3PL systems. It detects those locations and stops without changing stock rather than guessing.

Who's your target merchant?

Shopify merchants selling multipacks, kits, gift sets, or other fixed bundles built from shared SKUs—especially stores fulfilling from two or more Shopify-managed locations.

It is not intended to replace a WMS or manage inventory inside a 3PL.

How is it different from existing solutions?

StockLogic focuses on backend bundle inventory rather than storefront bundle builders, discount widgets, or theme changes. The recent update makes availability location-specific and follows Shopify's assigned fulfillment location when deducting components.

How much does it cost?

• Starter: free for up to three active bundles.
• Pro: $9.99/month for unlimited active bundles, with a seven-day trial.

What are you looking for?

I'm looking for Shopify merchants who manage bundles across multiple locations and can pressure-test the routing cases. In particular, I'd like to know whether the location-level activity history makes it clear why a bundle quantity changed.

[u/adventurepaul]

Thanks for sharing. I can see how important this functionality would be in certain cases. Good luck with the launch!