Carro vs. YMQ Product Options Variant Option

Carro connects participating Shopify stores together to enable cross-store selling or the ability for like-minded partners to directly sell each other products without the need for inventory, managing returns, or minimum order quantities.

YMQ Product Options Variant Option help add an unlimited number of product options to your items so you're not restricted by Shopify's limit of 3 options and 100 variants.