Knobby is a lifestyle app designed for shopping for underwear, offering a wide variety of fun and comfortable designs for men, women, and kids. Users can explore hundreds of styles, from bold boxers to sustainable briefs, making it easy to build a personalized underwear collection. The app features secure payment options for quick checkouts and allows users to grab matching socks and gifts, enhancing the shopping experience.

The app provides exclusive perks such as early access to new collections, app-only sales, and surprise discounts. Users can also benefit from push notifications about new drops. Additionally, the subscription service offers a monthly surprise design with a satisfaction guarantee. Overall, Knobby combines convenience with a playful approach to underwear shopping.