IT Glossary
What is UI?
User Interface: everything the user sees and touches — screens, buttons, colours, type, spacing — the face and clothing of a digital product.
UI — the user interface — is the concrete layer where a person meets your product: the screens, buttons, forms, colours, typefaces, icons, spacing and motion between them. Its partner concept is UX (the experience — how the whole thing flows), and the distinction is worth keeping sharp for conversations with designers: UX decides which steps a user takes and why; UI decides how each step looks and communicates. A good interface can be judged on verifiable criteria rather than taste. Clarity: on any screen, 'what do I do here?' should answer itself within seconds, with visual hierarchy leading the eye. Consistency: the same elements look and behave identically everywhere — which is the value of design systems, libraries of reusable components that keep a product coherent and each new screen cheaper. Feedback: every action gets a visible response (pressed, loading, succeeded, failed) — mute interfaces produce users who click three times and duplicate orders. Accessibility: sufficient contrast, touch-friendly targets, legibility — increasingly a legal obligation in Europe, not just good manners. For buyers, two habits pay off: judge portfolios on functional products similar in nature to yours, and insist the delivery includes the documented design system, not just screen images — it is the difference between a design that develops coherently and one each programmer reinterprets.
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Why it matters for your business
A professionalised first impression
A well-kept interface transmits seriousness instantly — users judge a company's solidity by the only layer they see: the screen.
Clarity that converts
Correct visual hierarchy leads the eye toward the action — the obvious button and the plain next step count directly in submitted forms.
A system, not scattered screens
A library of reused components keeps the product coherent and makes each new screen cheaper — design becomes an asset, not a recurring cost.
Frequently asked questions
UI versus UX — do I really need to care about the difference?
For commissioning work correctly, yes: 'users cannot find things or abandon flows' is UX (structure and logic, fixed with research and restructuring); 'it looks dated, untrustworthy or chaotic' is UI (visual language, fixed with a system-based redesign). The wrong diagnosis buys the wrong intervention — ask the vendor for a diagnosis explicitly.
What should a UI design delivery include?
More than screen images: the design system (components, colours, type, states — documented, ideally in an organised Figma library), specifications for developers (dimensions, behaviours, responsive variants) and usage rules. The difference shows at the first new screen built after the designer leaves: with a system it comes out coherent and cheap; without, every addition reinterprets the style and the product degrades visually in instalments.
Our product's interface looks dated — full redesign or a refresh?
It depends on the foundation: if structure and flows work and only the aesthetics stayed behind, a refresh on a new design system — modernised colours, type and components applied gradually — delivers the transformation at a fraction of the cost and risk; if the flows creak too, serious redesign starts from UX. What to avoid: the total redesign born of internal boredom, where regular users pay the relearning cost and the numbers rarely justify it.
Let’s talk about your project
Message us on WhatsApp or send an email — you talk directly to a developer.
office@northdan.com · +40 752 070 247