Partner with top UI/UX design companies in the USA to create research-backed, conversion-focused digital experiences that drive engagement, retention, and revenue. Select from our directory of companies reviewed by 12 industry experts based on over 4,000 verified client reviews.
List of the best UI/UX Design Companies in the USA
2 Companies-Rankings updated: September 05, 2026
Every US UI/UX agency featured on DesignRush is evaluated for UX strategy, design quality, and verified client feedback. Some featured placements may be paid.
Your business faces unique challenges. Let's work together to create a custom mobile app or web solution to meet those challenges head-on...
Top Services:
Mobile App Development
Software Development
Staff Augmentation
IoT
AI Development
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Location
Nashua, New Hampshire
Number of Employees
250 - 499
Average Hourly Rate
$35/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
8 Projects Listed
Zco Corporation Services
Mobile App Development
Software Development
Staff Augmentation
IoT
AI Development
UI/UX Design
Web Development
Software Testing
VR/AR
Wearables
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Volkswagen
Harvard University
BBC America
Verizon
Liberty Mutual
Microsoft
Samsung
Eversource
APR Energy
Dartmouth College
Data sourced from the agency's DesignRush profile
Zco Corporation Reviews & Testimonials
Mark Gratiot Director of R&D at Streamline Automation
5.0★
Cross-Platform Review from Mark Gratiot
In addition to building out a native remote inspection app for iPads, Zco concurrently ported the software to a Xamarin platform for Windows users. Zco has released nine major iterations of the iPad app, each available in the App Store, as well as the initial version of the cross-platform Xamarin build. Their nimble team boasts a wide breadth of skills to match any given situation. Having clear documentation upfront has reduced onboarding time.
Katie Matter Project Manager at Southwestern Advantage
5.0★
Mobile App Development Review from Katie Matter
Zco Corporation provided full-stack mobile app development to an educational resource retail organization. They worked in Unity to build a cross-platform resource for users to advance through various curricula. The app has successfully been moved into preproduction and the second phase of development, completely satisfying project stakeholders with the quality of both its designs and functionality. The Zco Corporation team is highly creative and collaborative throughout their work.
J. Michael Webb CEO at CheckMySpot
5.0★
Startup Review from J. Michael Webb
J. Michael Webb from CheckMySpot chose Zco Corporation for app development due to its expertise. Zco adeptly developed a hybrid mobile teledermatology platform and an admin website, demonstrating excellent communication, responsiveness, and innovation. Despite the project's evolving and innovative nature, Zco seamlessly integrated Webb's intent and met all challenges, leaving him with no suggestions for improvement. (Verified via email/call)
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
At Appstract, we specialize in crafting solutions that deliver unforgettable user experiences by leveraging innovation and adhering to best practices in mobile and web application development and design. Our mission is to ensure that every interaction with our products leaves a lasting impression, driving...
Top Services:
Software Development
Mobile App Development
Product Design
UI/UX Design
Staff Augmentation
Show more
Location
Coconut Creek, Florida
Number of Employees
Under 49
Average Hourly Rate
$30/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
4 Projects Listed
Appstract LLC Services
Software Development
Mobile App Development
Product Design
UI/UX Design
Staff Augmentation
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
In addition to these common services, many UI/UX design companies in the USA offer graphic design, motion design and animation, accessibility and compliance support, UX audit, and consultancy services.
What is the difference between user interface and user experience design?
A user interface design (UI design) focuses on what users see and interact with. It includes layout, typography, color, iconography, interactive components, and design systems.
On the other hand, user experience design (UX design) prioritizes how the product works for users, including user research, journey mapping, personas, problems, definition, information architecture, user flows, and usability testing and iteration.
When should you consider hiring a specialized UI/UX design company versus a full-service agency?
Consider hiring a specialized UI/UX design company in the USA if you are focusing on product usability, user flows, or interface design, such as redesigning a website user experience. These companies have deeper expertise in research methods, prototyping tools, and usability testing.
Choose a full-service agency when you need UI/UX design bundled with branding or development. Full-service companies offer convenience and continuity across disciplines, but their UX work may be handled by generalists rather than dedicated specialists.
How long do UI/UX design projects normally take?
Project timelines tend to scale with the complexity and scope of the engagement:
Smaller UX design efforts (like audits, interface refreshes, or lightweight UX engagements) are usually completed within 2 weeks to 3 months.
Standard UI/UX design projects for websites or mobile apps typically span 3 to 5 months.
Larger and more complex projects can take over 6 months.
What are the best UI/UX design companies in the USA?
The best UI/UX design companies in the USA that have helped businesses turn engagement into brand loyalty and revenue include: