Great UI design can mean the difference between alienating and converting a potential customer, which makes choosing the right UI UX service provider crucial. This definitive list of the world’s top UI design services makes finding the perfect partner easy.
Over the last few years, customer experience (CX) has emerged as a key differentiator for brands seeking a competitive edge. Of course, the foundation of good CX is excellent user interface (UI) design and user experience (UX).
Good UI design allows users to interact with a digital product easily and intuitively, minimizing friction and cognitive load. This leads to increased user satisfaction, engagement, and, ultimately, better business outcomes.
Unsurprisingly, 94% of web users feel straightforward website navigation is essential, while 83% appreciate attractive, up-to-date websites.
Get these design elements wrong, and suffer the consequences: 42% of web users will leave a website if the functionality is poor, while 38% will bounce because of unattractive content or design.
In turn, good UI design can boost conversion rates by up to 200%, while good UI UX design can up these rates by up to 400%. Those are big numbers that equal big revenue.
This article explores how your brand can deliver UI design that makes 100% sense for users, enhances creative performance and drives conversions.
The key? Finding the right UI design partner.
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How to choose a UI design partner that suits your needs
We believe any UI UX design company should be evaluated carefully according to several key criteria. These include:
- Relevant experience and portfolio: Look at the candidate’s portfolio to see if they’ve done work similar to what you’re after. Look for UI projects that echo the complexity of your project and your preferred design style. Does their work clearly demonstrate an understanding of your target market’s needs?
- Industry expertise: Determine whether the candidate has delivered UI work in your industry. Prior industry experience means they’ll be familiar with your commercial and design priorities, compliance considerations, the specific challenges you face and your users’ needs.
- Design aesthetic and style: A design partner with an aesthetic that aligns with your brand identity has a higher chance of creating a cohesive user interface design that resonates with your target audience.
- Design approach: The right web design partner will employ user-centric design principles. This means actively involving the intended users in research and doing a fair amount of testing and iteration.
- Cultural fit: Choosing a web design company with values that align with your own makes for good communication and collaboration. Ideally, the relationship should feel like a partnership—one where both parties are invested for the long run.
- Project management skills: Your chosen UI UX design company should be able to develop a well-structured project plan with clear timelines and tangible milestones in advance. This plan will help ensure the project stays on track and within budget while avoiding potential risks (e.g., launching the website or product too late).
- Technical capabilities: Check that candidates are familiar with industry-standard tools such as Adobe, Figma and InVision, and any relevant software your company uses.
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The process of choosing a UI design partner
Now that you know what to look for, let’s examine the process of selecting the right UI partner:
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The 10 best UI design services for 2025
Ready to start searching in earnest? This list of the best UI UX design services in the world will help you find the ideal partner.
1. Superside
Services offered:
- UI UX design services
- Bespoke web design audits and development for enterprise customers
- Web development with Webflow (and only with Webflow)
- AI-enhanced creative and consulting
- Creative localization
- Marketing consulting and strategy
- Design systems
- Ad, motion, video and brand creative assets strategy and creation
With a distributed workforce comprising the cream of the world’s web design crop, Superside will act as your creative team’s creative team. Our talented, innovative design team has a solid track record of delivering user-centric, visually engaging interfaces that turn complex processes into intuitive, user-friendly designs.
We prioritize web accessibility, responsiveness and UI/UX best practices, while remaining informed by a broad view of market trends.
We also complement our human capital with cutting-edge AI tools to streamline workflows and speed up the ideation, creation and iteration of high-quality designs. This is part of why some of the world’s leading brands—including Meta, Amazon and Google—have trusted us to boost their creative capabilities.
Read about how Antler leveraged Superside’s flexible creative solution and dedicated team to rebrand in record time. Or how Shopify could experiment quickly and responsively to break through bottlenecks and unlock growth opportunities.
Location: Global distribution across the Americas, Europe, Africa and Asia.
Pros: International quality standards backed by experience and a highly responsive service that scales according to your needs. In fact, creating design with Superside is 20 times faster than through internal hiring and typically costs half of what you’d expect from traditional design agencies.
Cons: Less suited to startups or micro-enterprises starting to build a brand from scratch.
Best for: Enterprises seeking custom UI UX design tailored for optimal efficiency, higher conversions and improved aesthetics to enhance their brand positioning and elevate the overall user experience.
Pricing: Starting at $10,000 per month, with flexible pricing options for enterprises.
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2. Lazarev.
(Source: Lazarev.)
Services offered:
- UI UX design services
- Web design
- Product design
- Mobile development
- Design systems
- Accessibility design
Recognized for its user-centric approach and extensive portfolio, Lazarev. has completed over 500 projects and received over 100 awards, including the Webby Award.
The agency helps startups and established brands across fintech, edtech, real estate and SaaS sectors with innovative, user-centric design solutions.
Location: Kyiv, Ukraine
Pros: High-quality designs backed by comprehensive research, delivered by a responsive, communicative and experienced team.
Cons: Their research-focused approach means the agency may not be suited to projects requiring a quick turnaround.
Best for: Tech-related businesses seeking data-driven design solutions.
Pricing: Approximately $10,000-$40,000 for a custom website.
3. Neuron
(Source: Neuron)
Services offered:
- UI UX design services
- Design thinking
- Product strategy
- DesignOps
- Web development
- Mobile app design
Neuron caters primarily to the B2B market, designing enterprise tools to enhance productivity, sales and intelligence. The company is known for its human-centered approach, which involves in-depth exploration of customer pain points and appropriate solutions.
The agency also focuses on developing and testing prototypes to refine their designs before implementation.
Customers such as Workforce, Jobble, AcuityMD and Vendr form part of their impressive portfolio.
Location: San Francisco, California, United States
Pros: Specialist B2B product expertise and a deep understanding of customer challenges.
Cons: Neuron’s high-quality design services come at a premium, which might not be suitable for businesses with limited budgets.
Best for: B2B companies willing to invest in top-tier specialist design and strategy.
Pricing: On request.
4. UX Studio
(Source: UX Studio)
Services offered:
- Product design
- User research
- Usability testing
- UX audit
- UX consulting
- Visual identity design
UX Studio emphasizes a collaborative approach to UI UX design, working closely and transparently with customers to meet expectations. The agency’s varied, international customer base gives it a global perspective on different markets and user preferences.
UX Studio assigns a dedicated team to each project, working 40 hours a week to ensure the project receives undivided attention and focus.
Past customers include T-Mobile, Bosch and KBC Bank.
Location: Budapest, Hungary
Pros: Expertise in diverse industries, including fintech, eCommerce, entertainment, cybersecurity and AI, gives UX Studio a broad perspective on customers’ design needs.
Cons: Its broad product focus may mean UX Studio lacks specialist expertise for customers with specific industry needs.
Best for: Larger businesses requiring a holistic digital product development approach.
Pricing: On request.
5. Metalab
(Source: Metalab)
Services offered:
- UI UX design services
- Custom software development
- Brand strategy
- App development
- Web development
- Prototyping and testing
Metalab has almost two decades of experience helping enterprises design and build software from scratch. They also have extensive experience redesigning and rebuilding legacy systems that need a fresh coat of paint.
This agency is differentiated by its cohesive approach of simultaneously building brand and product hand-in-hand, always keeping good UI and UX in mind.
Top brands, including Uber, Upwork and Calvin Klein, have turned to Metalab to help them enhance their digital presence.
Location: Vancouver, Canada
Pros: A culture of continuous learning puts the agency at the cutting edge of industry knowledge, with a team approach that encourages collective problem-solving.
Cons: Pricing and design methodologies can be somewhat opaque.
Best for: Established brands looking for a full-service design service in concert with product development.
Pricing: On request.
6. Clay
(Source: Clay)
Services offered:
- UI UX design services
- Branding
- Web design
- Digital product design
- User research and testing
- Enterprise software design
This full-service creative agency is known for designing and building inventive digital experiences across all platforms and brand touchpoints. It employs an AI-driven creative process to ensure scalable, consistent brand touchpoints.
Clay has helped a range of high-profile customers, including Meta, Slack, Amazon and Google, to drive brand engagement and business growth.
The agency’s process-driven approach incorporates behavioral and cognitive science and psychology to understand users’ needs closely.
Location: San Francisco, California, United States
Pros: Exclusive, patented UI/UX strategies with a track record of great designs.
Cons: May be too expensive for startups or smaller enterprises.
Best for: Tech-focused companies with deep pockets.
Pricing: On request
7. Seek
(Source: Seek)
Services offered:
- UI UX design services
- SEO/SEM optimization
- Social media management
- Platform development
- Web development
- App development
- Branding and identity
Seek brings a highly strategic approach to UI/UX design, integrating vision and strategy to help enterprises build product roadmaps and solve business challenges.
This approach is backed by extensive user research and feedback, a human-centered design philosophy and the use of cutting-edge software and technology.
Seek’s customers include BMW, Primax and Intercorp.
Location: Lima, Peru
Pros: A human-centered design approach ensures products are closely tailored to users’ preferences and needs.
Cons: As a relatively small agency, Seek may not be equipped to handle multiple large-scale projects.
Best for: Mid-to-large companies seeking human-centered, end-to-end digital product development.
Pricing: On request.
8. Work & Co.
(Source: Work & Co.)
Services offered:
- UI UX design services
- eCommerce platforms
- App development
- AI tools and chatbots
- Custom software development
- Brand strategy
Renowned for a collaborative, hands-on approach, Work & Co. assigns dedicated teams to each project, speeding up product design and iteration and simplifying billing. Senior designers and engineers are also assigned to all its projects, ensuring top-level expertise is brought to bear in solving customer problems.
This award-winning agency has designed and launched some of the world's most successful digital products and experiences for customers, including Virgin America, Pfizer, Apple, Nike and Gatorade.
Work & Co. is also known for its vocal stance on social issues such as climate change, immigration and voting rights.
Location: New York City, New York, United States
Pros: This agency has many highly innovative, transformative digital products under its belt. Its sizable workforce enables it to handle multiple large-scale projects.
Cons: As a premium agency, Work & Co.’s fees may be beyond the budgets of smaller companies. They’re also not necessarily suited to customers seeking comprehensive discovery phases and long-term strategy consulting.
Best for: Large and high-growth enterprises that prioritize execution over strategy-heavy consulting.
Pricing: On request.
9. Frog
(Source: Frog)
Services offered:
- Product strategy
- UI UX design services
- Customer experience strategy
- Business transformation
- Custom software development
- App development
This creative and design consultancy has been around since 1969 and specializes in helping businesses reinvent themselves. It applies strategic design thinking, creativity, comprehensive user research and technology to create innovative services and customer-centric UI experiences.
Frog has worked with many major brands, including Apple, Disney and Microsoft, and has studios worldwide, giving them a global perspective on design challenges.
Location: San Francisco, California, United States
Pros: As one of the oldest and most prestigious digital consulting firms on this list, Frog brings a wealth of experience to the business of identifying and exploiting product gaps.
Cons: With its high-touch, resource-intensive design process, this agency may not be suitable for smaller businesses.
Best for: Businesses looking for a holistic service to innovate or reinvent themselves.
Pricing: On request
10. IDEO
(Source: IDEO)
Services offered:
- UI UX design services
- Product design
- Design thinking
- Interactive design
- Web design
- User testing
- User interface
IDEO, another long-standing and well-respected agency, employs more than 600 team members across various fields, including behavioral science, business design, communication design and software engineering.
Its history and diversity of skills give IDEO a holistic view of design challenges.
IDEO has worked with brands like Apple, Ford, New York University, Sage, Sephora and H&M, and has received many awards for its work.
Location: San Francisco, California, United States
Pros: IDEO’s innovative approach to design thinking, coupled with many years of experience, makes it a potent creative partner.
Cons: The agency’s design methodology isn’t for everyone, and its pricing may put it beyond the reach of some companies.
Best for: Enterprises of all sizes that align with IDEO’s methodology.
Pricing: On request.
Partner with Superside for standout UI design
Good UI/UX design is the cornerstone of any brand’s digital presence. Getting this right can mean the difference between someone disengaging with your web product or website and becoming a loyal customer.
That’s why partnering with a UI UX design agency with the right industry experience, design approach, project management skills and technical capabilities is so important.
While all the agencies on this list are certainly capable, only Superside offers a highly responsive, scalable and flexible solution for dynamic enterprises seeking a best-in-class web presence.
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