UX/UI Design & HMI Agency

The difference lies less in methodology — good web design agencies also work user-centered — than in scope and depth. Web design agencies typically focus on websites (corporate, marketing, e-commerce) with an emphasis on branding, SEO and conversion. UX/UI design agencies like Entwurfreich design more complex digital products: apps, SaaS platforms, web applications and machine interfaces, where information architecture, user flows and iterative testing over longer development cycles are decisive. Our specific advantage: as an industrial design agency we also design physical products — from a machine's control panel through a medical device's display to the accompanying app. This lets us cover the entire user experience from a single source and avoid breaks between hardware and software.

HMI (Human Machine Interface) design covers the creation of operator interfaces for machines, industrial equipment and medical devices. Unlike apps or websites, HMI interfaces often need to work under stress, with gloves, in poor lighting or in safety-critical environments. Entwurfreich combines industrial design expertise with UX methodology: we design touchscreen interfaces, control panels and display systems that are intuitive, error-tolerant and efficient under real operating conditions. For medical devices we work according to IEC 62366 (usability engineering).

Costs depend on project scope. A UX audit or usability analysis starts at a few thousand euros. A complete UX/UI project — from user research through wireframing and UI design to clickable prototype — typically ranges from EUR 15,000 to 60,000 depending on complexity. Through the BMWK's go-inno programme, SMEs can have up to 50% of consulting costs subsidised. Entwurfreich is an authorised go-inno consultancy.

A design system is a collection of reusable components, design principles and guidelines that ensure consistent user experiences across all touchpoints — from app through web interface to embedded display. You need a design system when multiple teams work on different products or platforms and a unified brand experience must be maintained. At Entwurfreich we create design systems that cover both digital and physical product interfaces — including colour systems (CMF design), typography, iconography and interaction patterns.

A UX audit is a systematic analysis of an existing digital product. We evaluate information architecture, navigation, interaction design, visual hierarchy and accessibility using established heuristics (Nielsen, ISO 9241-210). The result is a prioritised action plan with concrete improvement recommendations. A UX audit typically takes 3–5 days and is an effective starting point when you want to improve an existing product without reinventing the wheel.

Entwurfreich is an industrial design agency in Düsseldorf specialising in UX/UI design, industrial design and strategic product development. Since 2012, the team has completed over 350 projects for 125+ clients — including ABB, Vodafone, Henkel, Coca-Cola, Fujifilm and Covestro. Our UX/UI team designs digital interfaces for apps, platforms and embedded systems. Our USP: we combine digital UX/UI design with physical industrial design, so the entire product experience — from hardware through interface to app — comes from a single source.