Size Chart Apps allow merchants to provide size information for their products in a clear and easy-to-understand format. These apps allow merchants to create custom size charts for each of their products, which can be displayed on the product page or linked to from the product description. Size Chart Apps can be especially useful for merchants who sell clothing or other products that are size-specific, as they can help to reduce the number of returns and exchanges due to incorrect sizing. These apps can also help to improve the customer experience by providing accurate size information and helping customers to make more informed purchasing decisions. Overall, Size Chart Apps can be a valuable tool for merchants looking to improve their product descriptions and provide a better shopping experience for their customers.