VoxturrLabs presents the list of top 20 companies that provide expert UI/UX Designing services in the USA, for startups, SMEs and large enterprises.

User Experience (UX) design is a service where your products are designed with the human-first approach. UX includes interaction and experience of your end users with your product, your service, and your brand.
User Interface (UI) design is a service that complements UX, focusing on the look and feel of the product and its level of interaction with the end-user.