Design · 0 agencies
UX/UI agencies in Cologne compared
Software that's functionally solid but nobody can use intuitively still misses the point. These agencies design user interfaces and user experiences for software, apps, and websites. Compare them by process, industry, and verified proof of expertise.
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Guide
What UX/UI design actually covers
User experience, or UX, looks at how people actually use a product and where they run into friction, usually starting with user interviews, observation, or analysis of existing usage data. User interface, or UI, is the concrete visual design that emerges from those findings: layout, colors, interaction patterns. Good agencies don't treat these as separate steps. They let real insights about users shape the design instead of jumping straight to polished screen mockups.
What matters in the design process
A process built on real users, not just assumptions, delivers more reliable results. Ask specifically how user research is built into the proposal, and whether results get tested with real people from your target audience before development starts.
An existing or newly built design system creates consistency across many screens and saves significant time on future additions. Ask to see how earlier projects benefited from one.
Collaboration with development often decides whether a good design actually gets built well. An agency that just hands over screen mockups and walks away tends to leave a gap that stays visible in the finished product. And ask how accessibility gets built in from the start, rather than bolted on as an afterthought.
What UX/UI design costs
€90 to €160 per hour is typical. A design foundation for a manageable application, including a handful of user interviews, costs €10,000 to €30,000. A comprehensive redesign with user research, a design system, and several rounds of testing runs €30,000 to €100,000, depending on the application's scope.
Typical projects
Redesigning an existing application with poor usage numbers. A design foundation for new software from the start of the development project. Building a design system for consistent design across multiple products. A usability test on an existing application to pinpoint specific problem areas.
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Frequently asked questions
UX/UI agencies: questions and answers
What does UX/UI design cost?
A design foundation for a manageable application costs €10,000 to €30,000, and a comprehensive redesign with user research runs €30,000 to €100,000. Agencies charge €90 to €160 per hour.
What's the difference between UX and UI?
UX is about how users actually experience a product and where they run into problems, usually based on user research. UI is the concrete visual execution that comes out of it. Good design needs both together, since a good-looking interface built on wrong assumptions about users won't solve the underlying problems.
Do I really need user research for a small project?
At a reduced scope, it's almost always worth it. Even five to eight conversations with real users often surface the most serious problems. Skip this step entirely and your design ends up based on assumptions that can turn out to be expensive mistakes later.
How long does a UX/UI project take?
A design foundation for a manageable application is ready in four to eight weeks. A comprehensive redesign with several rounds of testing takes eight to sixteen weeks. Time spent on user testing shouldn't be seen as a delay. It's the part that prevents costly missteps later on.