Prototyping
From paper sketch to clickable product.
We prototype at the fidelity that unlocks your next decision — from storyboard to a real click-through prototype with data.
Fidelity ladder
Four rungs — one continuous learning curve.
Each rung answers different questions: sketches test logic, wireframes test layout, clickable prototypes test flow, high-fi tests the experience.
01 · Sketch
Paper sketch
Fast hand sketches to verify logic and flows — before any design tool.
Tooling
Tools we use with practiced hands.
We pick tools by project, not by trend. These stacks have repeatedly held up for us.
tooling.txt
updated · 05/2026
- FigmaHigh-fidelity design, auto layout, variables, multiplayer.design
- Figma MakeClickable prototypes, conditional logic, variables.proto
- FramerCode-near prototypes with real components and motion.proto
- StorybookComponent prototyping in the real code path.code
- MazeQuantitative tests, heatmaps, success rates.test
- MiroStoryboards, workshop prototypes, co-creation.workshop
By the numbers
This is hafencity.dev
15+ Experts
Engineers, designers, and strategists working as one practice from our Hamburg HQ.
50+ Clients
Companies across consumer, healthcare, and B2B trust us with their digital products. Long-term partnerships are the default.
97% Recommendation rate
Repeat engagements and references our buyers actually call. Trust compounds when delivery does.
50+ Launches
Custom mobile and web products shipped from concept to maintenance — owned end-to-end by our team.
100% In-house
Strategy, design, and engineering all live at our Hamburg HQ. One team, one project lead, accountable to you from kickoff to launch.
Since 2023
Helping companies ship digital products — and growing alongside the teams we work with.
Next steps
Let's talk about your project
Book a 30-minute discovery call. We'll review your goals, surface unknowns, and outline how we would run the engagement.