Bundles & Kitting Inventory Manager is a Shopify app that lets your brand sell bundles, kits and multipacks without ever overselling the parts inside them. When a customer buys a "Starter Kit" or a "3-pack," the underlying components share inventory with the products you sell individually — and most off-the-shelf approaches break that relationship. This app keeps it intact.

Every bundle is defined as a bill of materials (BOM): a parent product mapped to its component variants and quantities, stored in Shopify metafields. When an order is created, an orders/create webhook fires and the app deducts each component's stock at the correct location using the Admin GraphQL API (inventoryAdjustQuantities). Sell a kit, and the shared components drop everywhere they appear — single listings, other bundles, multipacks — so your available-to-sell numbers stay honest across multi-location inventory.

This is a build-to-order product. ECOSIRE designs the BOM model around your catalog, builds the app on Shopify's current API version, installs it on your store via OAuth with least-privilege scopes, and configures bundle pricing, component mapping and low-stock thresholds with you. It is not an instant App Store download — you get something fitted to how your kits actually work, plus a real engineer who installed it.

You receive bundle-specific pricing and discounts, component low-stock alerts, multi-location bundle availability (a kit is only sellable where every component is in stock), and an admin view of which BOMs are at risk. Refunds and cancellations restock components correctly. Built honestly, installed properly, supported after launch.