The agency — Berlin
The golden ratio is 1.618. We work at 1.5 — close enough to feel right, different enough to feel alive.
Not the perfect formula, but the human version of it. We believe the best design lives between the rule and the instinct. Studio Vesper helps startups and scale-ups build better digital products — from first ideas to polished interfaces.
core services
UI/UX Design
We design web and mobile interfaces that are clear, intuitive, and beautiful. Starting from user needs, we create wireframes, flows, and high-fidelity designs that are ready for development — nothing gets lost in translation.
User flows & wireframes · High-fidelity UI · Interactive prototypes · Responsive web & mobile
Product Design
We work with you from early concept to final handoff. We help define what to build, how it should work, and what it should look like — so your team can focus on building with confidence.
Product strategy · Feature ideation · Concept to handoff
Design Systems
We build scalable component libraries and clear guidelines so your product grows without losing consistency. Whether you’re starting from scratch or cleaning up an existing system, we make sure your team works faster and your product looks unified.
Component library · Tokens · Storybooks · Guidelines & documentation
Brand Identity & Visual Design
First impressions matter. We create visual identities that are memorable, consistent, and built to last — from logo and color palette to a full brand guide your whole team can use.
Logo design · Typography · Brand guidelines
strategic services
UX Research
We help you understand what your users actually need — before you spend time building the wrong thing. From planning the research to presenting the findings, we handle the whole process.
User interviews · User testing · Surveys · Journey mapping
Prototyping
We create interactive prototypes so you can test your concept with real users early. This saves you time, money, and the pain of rebuilding features that don’t work.
Advanced prototyping · Early user testing · Stakeholder-ready demos
Design Sprints
A focused week to move from open question to tested answer. We facilitate the whole sprint — framing the problem, sketching solutions, and validating a prototype with real users by Friday.
Sprint facilitation · Rapid concepting · End-of-week validation
Architecture
We map how your product fits together — content, navigation, and flows — so complexity stays understandable as you grow, for your users and for your team.
Information architecture · Navigation models · Content structure
Selected case studies
The people
Every project is led directly by Göktan Abacı and Catharina Börgert — no handoffs, no account layers.