An ecommerce app development company is a business that specializes in creating online shopping applications for retailers and individual merchants. These apps allow customers to browse and purchase products from their mobile devices, and often include features such as product listings, customer accounts, shopping carts, and payment processing. Ecommerce app development companies may offer a range of services, such as custom app design and development, integration with existing websites and systems, and ongoing maintenance and support. Many ecommerce app development companies also offer web development and other related services.