Mix and Match Bundle Builder

This app offers exactly what we needed to list our bundles and also allow our clients to vary the quantities of each individual item. We only had one issue with the way it displayed on mobile devices but their support team was quick to adjust it for us. Their customer support is the best I've seen from any Shopify app. Same day replies and very clear communication. Highly recommended if you're looking for a "product bundle" app for your store.