In today’s digital world, a seamless user experience can define the success of a mobile app. UI/UX design is not just about aesthetics – it shapes how users interact with your app and ultimately drives engagement, retention, and conversions. The USA is home to many top-tier design agencies that specialize in creating intuitive, visually striking mobile app interfaces. This guide highlights the leading companies delivering outstanding mobile app UI/UX design services across the country.
1. A-listware
At A-listware, we specialize in providing software development and consulting services across a wide range of industries. Our team offers full-cycle digital solutions, including mobile app UI/UX design services for businesses in the USA. We focus on delivering responsive and user-centered design that aligns with the goals of mobile applications.
Our team works as an extension of client organizations, integrating seamlessly to support long-term or project-based collaboration. We match companies with highly skilled software developers, UI/UX designers, and IT specialists, ensuring the right combination of technical skills and team dynamics.
Mobile UI/UX design is one of our key service areas. We approach it by prioritizing user flow, accessibility, and mobile-first design principles. We also handle all stages of digital product development, including consulting, implementation, infrastructure management, and continuous support.
We serve a range of companies from startups to enterprises, delivering scalable solutions while maintaining consistent communication and quality standards. Our service model includes team augmentation, dedicated teams, and on-demand specialists to meet various client needs.
Key Highlights:
- Based in the USA and the UK, serving a global client base
- Provide UI/UX design as part of mobile app development services
- Team augmentation and full development outsourcing options
- 24/7 access to technical support and management
- Experience working with clients across fintech, healthcare, retail, and more
Services:
- Mobile App UI/UX Design
- Software Development
- Application Services
- Testing & QA
- IT Consulting
- Dedicated Development Teams
- Data Analytics
- Infrastructure Services
- Help Desk Services
- Cybersecurity Services
Contact Information:
- Website: a-listware.com
- Address: North Bergen, NJ 07047, USA
- Phone: +1 (888) 337 93 73
- Email: info@a-listware.com
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
2. Toptal
Toptal provides access to a network of freelance professionals including developers, designers, and consultants, serving companies worldwide. Their offering includes UI/UX design services for mobile applications, with a focus on scalable and flexible engagements. Operating in the USA, Toptal matches clients with vetted talent for both short-term and ongoing digital projects.
They support mobile app UI/UX design by connecting organizations with experienced designers who specialize in mobile-first interfaces, visual design, and user research. The company operates as a talent marketplace, allowing clients to assemble remote teams with various skill sets. Their service model supports hiring for both project-based and full-time roles.
Key Highlights:
- Operates as a global freelance talent network
- Offers mobile UI/UX design as part of digital product services
- Provides flexible staffing and remote team options
- Supports engagements for both startups and enterprises
- Active in the USA with a wide reach across industries
Services:
- Mobile App UI/UX Design
- Software Development
- Product Management
- Project Management
- Design and Branding
- Marketing Services
- Business and Financial Consulting
- Quality Assurance & Testing
Contact:
- Website: www.toptal.com
- Phone: +1.888.867.7001
- E-mail: support@toptal.com
- LinkedIn: www.linkedin.com/company/toptal
- Twitter: x.com/toptal
- Facebook: www.facebook.com/toptal
- Instagram: www.instagram.com/toptal
3. IDEO
IDEO is a design and consulting firm with a long history of working across sectors on innovation and experience-based projects. They offer mobile app UI/UX design services in the USA as part of broader product and service design work. Their teams often collaborate with companies to prototype and deliver human-centered digital experiences.
Their approach to mobile UI/UX focuses on translating strategic goals into clear, usable, and responsive interfaces. In addition to digital design, IDEO supports organizations with strategy and creative capability building. They work across industries such as healthcare, retail, education, and sustainability, helping teams make informed design decisions.
Key Highlights:
- Long-established design and innovation company
- Offers UI/UX services for mobile applications
- Focus on user-centered and research-informed design
- Works across public and private sectors
- Based in the USA and operates globally
Services:
- Mobile App UI/UX Design
- Product and Service Design
- Digital Strategy
- Design Thinking Facilitation
- Experience Prototyping
- Organizational Change Support
- Research and Insights
- Visual and Brand Design
Contact:
- Website: www.ideo.com
- LinkedIn: www.linkedin.com/company/ideo
- Twitter: x.com/ideo
- Facebook: www.facebook.com/IDEOprofile
- Instagram: www.instagram.com/ideo
4. Frog
Frog is a global design and innovation firm that provides strategy and product development services. They offer mobile app UI/UX design in the USA as part of their digital experience portfolio. Their work includes collaboration with enterprises on complex product challenges, using design as a tool for creating user-friendly mobile interfaces.
Their mobile design services are embedded within broader digital transformation and brand experience initiatives. Frog combines research, prototyping, and technical support to help clients design, launch, and improve mobile applications. They operate as part of Capgemini Invent and serve clients across industries like automotive, finance, healthcare, and retail.
Key Highlights:
- Part of Capgemini Invent
- Offers mobile UI/UX design as part of digital service development
- Focus on experience design for enterprise and consumer apps
- Combines design, technology, and business strategy
- Global presence with USA-based teams
Services:
- Mobile App UI/UX Design
- Experience and Product Design
- Service Design
- Business and Design Strategy
- Visual Identity and Branding
- Research and Trend Analysis
- Technology Integration
- Innovation Consulting
Contact:
- Website: www.frog.co
- Address: 1011 3rd Street, Suite 300, San Francisco, CA, 94158
- Phone: +1 (415) 659-0250
- LinkedIn: www.linkedin.com/company/frogdesign
- Instagram: www.instagram.com/frog_design
5. Clay
Clay is a digital design agency based in the USA that focuses on delivering UI/UX services for mobile applications and other digital products. Their team blends design, strategy, and technology to support brands in developing user-centered mobile experiences. Working across industries including fintech, ecommerce, and consumer services, they provide visual and interaction design for mobile platforms as part of their broader digital services.
Clay’s work includes mobile app design, design systems, and user interface development. Their project collaborations often span from initial concept to design delivery and development handoff. They support digital transformation by aligning interface design with usability and performance, combining in-house design teams with technical expertise.
Key Highlights:
- Specializes in mobile UI/UX design for digital products
- Offers design systems and app interfaces for mobile platforms
- Collaborates with global brands across various industry
- Located in several US cities including San Francisco and New York
- Covers strategy, branding, and development alongside UX
Services:
- Mobile App UI/UX Design
- Design Systems
- Visual Design
- Web Design
- Development Support
- Product Branding
- Interaction Design
- Digital Strategy
Contact:
- Website: clay.global
- Address: 300 Broadway, San Francisco, CA 94133
- Phone: +1 415 796 6262
- E-mail: hey@clay.global
- LinkedIn: www.linkedin.com/company/clayglobal
- Twitter: x.com/clayglobal
- Facebook: www.facebook.com/claydesignstudio
- Instagram: www.instagram.com/clayglobal
6. Code and Theory (YML)
YML, now part of Code and Theory, is a creative and technology-focused agency with services that include UI/UX design for mobile apps. Based in the USA, their teams combine user research, design thinking, and technical development to create functional mobile experiences for enterprise and consumer clients. Their focus includes aligning visual design with product goals in cross-platform environments.
They support full product lifecycle services from strategy through implementation. Their approach to mobile UI/UX design integrates creative and engineering teams to address user needs and usability across digital platforms. This includes app interfaces, experience architecture, and development collaboration.
Key Highlights:
- Merged with Code and Theory
- Offers mobile app UI/UX design as part of broader product work
- US-based with a focus on creative and engineering collaboration
- Serves enterprise and B2C sectors
- Combines product design with technology implementation
Services:
- Mobile App UI/UX Design
- Product Design
- Web Development
- Creative Strategy
- Research and Testing
- Experience Architecture
- Content Design
- Prototyping and Testing
Contact:
- Website: yml.co
- Address: 69th Floor, New York, NY 10007
- E-mail: press@codeandtheory.com
- LinkedIn: www.linkedin.com/company/codeandtheory
- Twitter: x.com/codeandtheory
- Instagram: www.instagram.com/codeandtheory
7. Momentum Design Lab
Momentum Design Lab provides design and engineering services with a focus on creating user-centered mobile and digital experiences. Their work includes UI/UX design for mobile applications within enterprise systems and consumer platforms. They combine research, strategy, and design execution to help clients address usability and technical challenges.
They deliver digital product and service design by leveraging AI and emerging technologies. Momentum collaborates with companies across industries, developing app interfaces and end-to-end experience designs. Their teams are based in locations including Silicon Valley and New York, and they work globally with a focus on human-centered design.
Key Highlights:
- Provides mobile app UI/UX design for enterprise and consumer apps
- US-based with offices in Silicon Valley and New York
- Applies AI and design thinking in product development
- Works across industries including finance, health, and tech
- Offers design, strategy, and engineering services
Services:
- Mobile App UI/UX Design
- Digital Product Design
- Research and Strategy
- Service Design
- AI-Powered Experience Design
- Innovation Planning
- Application Architecture
- Product Engineering
Contact:
- Website: www.momentumdesignlab.com
- Address: 101 University Ave, Suite 301, Palo Alto, CA 94301
- Phone: +1 650 753 8157
- E-mail: hello@momentumio.com
- LinkedIn: www.linkedin.com/company/momentumdesignlab
- Twitter: x.com/momentumdl
- Facebook: www.facebook.com/momentumdesignlab
- Instagram: www.instagram.com/momentumdl
8. Ramotion
Ramotion is a US-based design agency that focuses on the intersection of branding and digital product design. Their services include UI/UX design for mobile applications, targeting tech-focused companies and startups. They collaborate on projects involving interface design, app usability, and consistency across digital experiences.
They work with brands to design application interfaces that align with both functional goals and user expectations. Ramotion also supports clients through the development of design systems and branding materials that work across platforms. Their work spans early-stage product design through implementation support.
Key Highlights:
- Based in the USA with a focus on mobile UI/UX design
- Offers brand and product design for digital applications
- Works with startups and established tech companies
- Provides design systems for multi-platform consistency
- Supports app design from concept through execution
Services:
- Mobile App UI/UX Design
- Brand Design
- App Interface Design
- Design Systems
- Visual Identity
- Web App Design
- Product Strategy
- UX Prototyping
Contact:
- Website: www.ramotion.com
- Address: 475 7th Ave, San Francisco, CA, 94118, United States
- Phone: +1 888 410 8885
- E-mail: newbusiness@ramotion.com
- LinkedIn: www.linkedin.com/company/ramotion
- Twitter: x.com/ramotion
- Instagram: www.instagram.com/ramotion
9. Work & Co
Work & Co is a digital product company that provides UI/UX design services for mobile and web platforms. Based in the USA, they specialize in building core digital products for clients in industries such as health, technology, and retail. Their teams include designers, developers, and strategists who work together on mobile-first product design.
They support mobile UI/UX design as part of integrated digital service offerings. Their process includes user research, prototyping, and interface design. Work & Co often manages the full lifecycle of product development and works with large organizations to implement scalable mobile experiences.
Key Highlights:
- Based in the USA with multiple office locations
- Provides mobile UI/UX design for enterprise-level applications
- Works across full product lifecycle from research to delivery
- Combines product design and engineering
- Clients include large multinational brands
Services:
- Mobile App UI/UX Design
- Digital Product Design
- User Research and Testing
- Interface Design
- Product Strategy
- Full-Stack Development
- Design Systems
- AI and Emerging Tech Integration
Contact:
- Website: work.co
- Address: 231 Front St., 5th Fl., Brooklyn, NY 11201
- Phone: +1 703 948 6120
- E-mail: newbiz@work.co
10. Moburst
Moburst is a digital agency with offices in the USA that offers mobile app UI/UX design as part of its product development services. They work with brands to improve app experiences through user-focused design, optimization, and mobile-first strategies. Their team supports companies across a range of sectors, including tech, health, retail, and entertainment, providing interface design for both native and hybrid applications.
In addition to UI/UX design, Moburst also delivers development, marketing, and strategy services, supporting the full lifecycle of mobile applications. Their approach includes user acquisition, app store optimization, and analytics integration to ensure mobile experiences align with performance goals and usability standards.
Key Highlights:
- Offers mobile UI/UX design services for iOS and Android
- Operates with multiple teams across US cities including New York
- Integrates app design with marketing and growth services
- Supports app optimization through ASO and CRO
- Works across industries including retail, media, and tech
Services:
- Mobile App UI/UX Design
- App Development
- Website Design and Development
- App Store Optimization (ASO)
- Conversion Rate Optimization (CRO)
- Product and Digital Strategy
- Creative Design and Video Production
- Media Buying and Analytics
Contact:
- Website: www.moburst.com
- Address: 149 5th Avenue, New York, NY
- Phone: +1 (408) 412-3472
- LinkedIn: www.linkedin.com/company/moburst
- Facebook: www.facebook.com/moburstmobilemarketing
- Instagram: www.instagram.com/moburst.agency
11. Meticular
Meticular is a US-based UX design company that provides mobile UI/UX services for software products. They work with startups and established businesses to build application interfaces that are user-tested and research-driven. Their design process includes usability testing, wireframing, and prototyping aimed at enhancing mobile experiences across different platforms.
They offer a range of flexible engagement models such as UX subscriptions and design accelerators. Meticular’s team operates as an outsourced UX department for companies needing mobile product design support without maintaining in-house resources. They focus on creating enterprise-grade user experiences while collaborating closely with product and development teams.
Key Highlights:
- Provides mobile UI/UX design through flexible models
- Based in the USA with a focus on digital product design
- Works with startups and established software teams
- Offers rapid design delivery through accelerators
- Includes research and validation in design workflows
Services:
- Mobile App UI/UX Design
- UX Strategy and Planning
- Prototyping and Wireframing
- User Testing and Validation
- Design Subscriptions
- Microsprint Planning for MVPs
- UI Design for Web and Mobile Apps
- Product Design Support
Contact:
- Website: meticular.co
- LinkedIn: www.linkedin.com/company/meticular
12. Mercury Development
Mercury Development is a software company based in the USA that offers mobile app UI/UX design services as part of its broader development offering. Their team supports the design and development of mobile applications by creating interfaces tailored to specific business needs. With experience across industries, they focus on designing apps that meet usability standards and align with technical requirements.
They cover end-to-end product development including app UI, design validation, and integration with development processes. Mercury Development delivers solutions for Android and iOS platforms, supporting both internal and client-facing products. They operate globally but maintain a strong presence in the US, working with both startups and large enterprises.
Key Highlights:
- Provides mobile UI/UX design for Android and iOS
- Based in the USA with international reach
- Offers full-cycle design and development services
- Works across sectors including finance, retail, and healthcare
- Emphasizes sector-specific usability and technical compliance
Services:
- Mobile App UI/UX Design
- Application Development
- UI Prototyping and Design Testing
- Platform-Specific Design
- Web and Mobile Interface Design
- Product Architecture
- Support and Maintenance
- Custom Software Development
Contact:
- Website: mercdev.com
- Address: 901 SW Martin Downs Blvd, Suite 321, Palm City, FL 34990, USA
- Phone: +1 305 767 2434
- E-mail: sales@mercurydevelopment.com
- LinkedIn: www.linkedin.com/company/mercdev
- Twitter: x.com/mercdev
- Facebook: www.facebook.com/mercdev
- Instagram: www.instagram.com/mercdev
13. WillowTree
WillowTree is a US-based digital product company that designs and builds mobile app interfaces for large-scale enterprise clients. They provide mobile app UI/UX design services as part of a broader offering that includes digital strategy, AI integration, and software development. Their work focuses on streamlining enterprise workflows and improving user experiences across mobile platforms.
Their design process integrates research, usability testing, and interface development. WillowTree supports clients by creating native and cross-platform mobile app designs that align with business objectives and user needs. They work with companies in healthcare, finance, hospitality, and retail, contributing both design and technical execution.
Key Highlights:
- Offers mobile UI/UX design integrated with enterprise solutions
- Based in the USA with a national presence
- Works with enterprise clients across various industries
- Combines strategy, design, and AI-driven product development
- Part of the Telus Digital group
Services:
- Mobile App UI/UX Design
- Digital Strategy
- Interface Design
- Product Development
- Enterprise AI Integration
- Customer Experience Design
- Visual and Interaction Design
- Marketing and Content Strategy
Contact:
- Website: www.willowtreeapps.com
- Address: 1835 Broadway Street, Charlottesville, VA 22902
- Phone: 1-888-329-9875
- E-mail: info@willowtreeapps.com
14. ArcTouch
ArcTouch is a digital product agency with locations across the USA that provides mobile UI/UX design services for apps, websites, and connected products. They work with companies to create usable and visually consistent applications that focus on user engagement and accessibility. Their process includes concept development, interface design, and support for emerging technologies.
They collaborate on projects ranging from standalone app design to full-service digital experience creation. ArcTouch offers flexible engagement options, allowing clients to either hire a complete team or integrate ArcTouch experts into existing teams. They serve businesses of all sizes across sectors such as travel, healthcare, and consumer technology.
Key Highlights:
- Based in the USA with offices in San Francisco, New York, and Austin
- Specializes in mobile UI/UX design and app development
- Supports accessibility and connected product interfaces
- Offers flexible team engagement models
- Covers full product lifecycle from strategy to release
Services:
- Mobile App UI/UX Design
- Product Strategy
- Connected Product Design
- Web and App Development
- Accessibility-Focused Design
- API and Backend Integration
- Design System Implementation
- Research and Usability Testing
Contact:
- Website: arctouch.com
- Address: 548 Market Street, San Francisco, CA 94104
- Phone: +1-415-944-2000
- E-mail: hello@arctouch.com
- LinkedIn: www.linkedin.com/company/arctouch
- Instagram: www.instagram.com/arctouchlife
15. Appnovation
Appnovation is a digital partner that offers mobile app UI/UX design as part of its experience and design services. Operating in the USA and internationally, they help organizations develop mobile applications with a focus on usability, performance, and visual design. Their work supports both internal and customer-facing applications for brands in sectors like healthcare, food services, and consumer goods.
They provide services from concept to delivery, including wireframes, high-fidelity designs, and development-ready assets. Appnovation often integrates design into larger transformation efforts involving content strategy, digital platforms, and AI tools. Their process includes collaborative work with clients to align app design with functional and business goals.
Key Highlights:
- Offers mobile app UI/UX design across global and US markets
- Combines design services with engineering and platform support
- Works across industries such as healthcare and retail
- Designs both native and hybrid mobile applications
- Integrates design with strategy and digital engineering
Services:
- Mobile App UI/UX Design
- Experience and Visual Design
- Product Strategy
- Interface Testing and Prototyping
- Digital Platform Development
- Content and Accessibility Design
- AI-Powered Experience Integration
- Research and User Journey Mapping
Contact:
- Website: www.appnovation.com
- Address: 200 Madison Avenue, Ste 2100, New York, NY, 10016 – United States
- Phone: +1 (646) 757-1545
- E-mail: contact@appnovation.com
- LinkedIn: www.linkedin.com/company/appnovation
- Instagram: www.instagram.com/appnovation
16. Zco Corporation
Zco Corporation is a US-based software development company that offers mobile app UI/UX design services as part of its custom application development work. They design interfaces for mobile platforms including iOS, Android, and cross-platform frameworks. Their UI/UX services focus on creating user-friendly mobile apps that support business goals through structured workflows and responsive design.
They serve a variety of industries and provide services across all project stages, from initial discovery to post-launch support. Their team includes designers and engineers who collaborate on both the visual and technical aspects of mobile application development. Zco supports native and hybrid app development while ensuring the interface aligns with usability standards.
Key Highlights:
- Provides mobile UI/UX design services as part of custom software development
- Offers native, hybrid, and cross-platform mobile app design
- Based in the USA with offices in New Hampshire, Boston, and New York
- Supports end-to-end design and development lifecycle
- Works with enterprises and startups across various industries
Services:
- Mobile App UI/UX Design
- iOS and Android App Development
- React Native and Flutter Development
- Enterprise Software Development
- AR and VR App Development
- 3D Animation and Game Design
- Post-Launch Support and Maintenance
- Staff Augmentation Services
Contact:
- Website: www.zco.com
- Address: 20 Trafalgar Square, Suite 500, Nashua, NH 03063, USA
- Phone: 603.881.9200
- LinkedIn: www.linkedin.com/company/zco-corporation
- Twitter: x.com/zcocorporation
- Facebook: www.facebook.com/ZcoCorporation
17. Rightpoint
Rightpoint is a digital experience company in the USA that provides mobile app UI/UX design as part of its broader customer and employee experience services. They support mobile design for both consumer-facing applications and enterprise tools, helping organizations develop interfaces that align with business goals and user needs. Their team works across design, strategy, and technology to create apps that are functional, scalable, and user-centered.
They collaborate with clients in various industries, handling projects from concept through deployment. Their mobile UI/UX design work includes interaction design, visual design, prototyping, and integration with backend systems. Rightpoint also incorporates AI and analytics into experience design, aiming to improve usability and overall engagement.
Key Highlights:
- Offers mobile app UI/UX design as part of digital experience services
- Based in the USA with offices in several major cities
- Works across customer and employee experience initiatives
- Collaborates with enterprise tech platforms like Adobe and Microsoft
- Focuses on end-to-end product design and implementation
Services:
- Mobile App UI/UX Design
- Customer Experience Design
- Employee Experience Solutions
- AI-Powered Product Design
- Frontend and Backend Integration
- Prototyping and Testing
- Visual and Interaction Design
- Digital Strategy and Consulting
Contact:
- Website: www.rightpoint.com
- Address: 29 N. Upper Wacker Dr., Fifth Floor, Chicago, IL 60606
- LinkedIn: www.linkedin.com/company/rightpoint
- Twitter: x.com/rightpoint
- Facebook: www.facebook.com/rightpointfan
- Instagram: www.instagram.com/therightpoint
Conclusion
Choosing the right mobile app UI/UX design company in the USA depends on your project goals, user needs, and technical requirements. The companies featured in this article offer a range of services, from user research and interface design to full-scale product development. They work with startups, enterprises, and everything in between, delivering mobile experiences that focus on usability, accessibility, and performance.
Whether you need a team to build a mobile app from the ground up or support for an existing product, there are qualified partners across the US with the expertise to handle both design and implementation. Taking time to evaluate capabilities, communication, and design approach can help ensure a productive collaboration and a more effective final product.
