Withfriends (YC W19) is an innovative app designed to simplify the process of offering subscription boxes, eliminating the usual concerns about workload management. Utilizing advanced AI, it allows businesses to effortlessly design subscription plans by curating a variety of products based on customized rules and customer preferences. The app seamlessly integrates with existing fulfillment workflows, managing orders and subscription sales while enabling subscribers to adjust their preferences as needed. Through Withfriends, companies can build a reliable stream of recurring revenue without the usual hassle. Additionally, businesses can approve AI-curated selections with just one click or make use of powerful manual curation tools. Subscribers are empowered to fully customize their box contents, and this flexibility contributes to a 14-month average subscriber lifetime. The app also facilitates inventory management by helping move slow-moving stock and testing new products, while offering the option for customers to gift subscriptions to friends and family.