User Testing
Real users. Real observations.
We test your products with real people — moderated or remote, qualitative and quantitative — and hand over documented findings, not gut feelings.
Session replay
This is what an analysed session looks like.
Heatmap, click paths, think-aloud quotes, success rates — we compress every session into a clearly readable result.
Participant 04 · age 32 · daily users
Task 02 — Approve invoice
Playback time: 42 seconds of 2 minutes 18
Live notes
"I hesitated for three seconds because I expected the button on the right. Other than that, it was clear."
- Clicks
- 47
- Success
- 83 %
- Time
- 2:18
Replay available
Methods
The right method for the right question.
We deploy qualitative and quantitative methods — depending on whether you need to understand behaviour or numbers.
- 01Moderated usability testDeep observation, think-aloud protocol, early concepts.5–8Qualitative
- 02Unmoderated remote testTask-based, scaled fast, asynchronous.20–60Quantitative
- 03InterviewNeeds, context, the language users actually use.6–12Qualitative
- 04A/B testComparable variants, statistically meaningful.500+Quantitative
- 05Tree test / card sortInformation architecture, category names, findability.30+Quantitative
- 06Diary studyBehaviour over time, captured longitudinally.8–12Qualitative
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.