On stores that aren't Shopify Plus, two product discounts can't both apply to the same item. Shopify applies whichever saves the customer more and does not report which one lost. A bundle can be split: one line keeps the bundle discount, another is taken by a sale, with no error anywhere. Bundle Watch names the overlapping discounts before you save a bundle, and scans past orders for the splits that already happened. Bundles are built as discounts, never bundle products.

• Compare a new bundle against every active discount before you save it.
• See the conflicting discounts by name, and what will happen at checkout.
• Scan the whole store for active discounts that overlap each other.
• Find past orders that contained a whole bundle but not its discount.
• Conflicts are reported even when the discount that loses is one of ours.