The verdict in three sentences
For a Berlin scheduling software vendor (1,500 users) whose activation rate is stuck at 35%, a full UX redesign costs between EUR 70,000 and 125,000 in 2026: UX audit, design system, front-end rebuild and user testing. Method matters more than budget: measure first, test with real users at EUR 400 per session, then ship in releases. Realistic six-month targets: activation up 15 points and support tickets down 25%.
The budget, line by line
A UX redesign is not a new visual theme. It starts from usage data (where users drop off, which features stay unused) and ends with a front end rebuilt on reusable components.
| Item (2026 order of magnitude) | Content | Cost | Duration |
|---|---|---|---|
| UX audit | Journey analysis, product data, 8 to 12 interviews, heuristic review | EUR 6,000 to 12,000 | 3 to 4 weeks |
| User testing | Moderated sessions, recruitment included | EUR 400 per session | 1 week per round |
| Design system | Components, tokens, accessibility, documentation | EUR 15,000 to 25,000 | 4 to 6 weeks |
| Key journey mockups | Onboarding, schedule creation, sharing | EUR 8,000 to 15,000 | 3 to 5 weeks |
| Front-end rebuild | Gradual migration of screens to the design system | EUR 40,000 to 80,000 | 10 to 20 weeks |
| Analytics instrumentation | Activation events, funnels | EUR 2,000 to 4,000 | 1 to 2 weeks |
| Indicative total | EUR 70,000 to 125,000 | 5 to 8 months |
For a mid-sized SaaS, the best cost-to-impact ratio often lies in the audit and onboarding redesign alone, about EUR 25,000 to 35,000: that is where activation is won or lost.
The method that moves the metrics
The risk of a redesign is spending EUR 100,000 on a prettier product that is not used more. We structure the project in measurable phases.
| Phase | Deliverable | Exit indicator |
|---|---|---|
| 1. Baseline measurement | Instrumented activation funnel | Activation at 35%, time to first schedule |
| 2. Audit and interviews | 15 to 25 prioritized pain points | Top 5 drop-off causes identified |
| 3. Tested prototypes | 2 rounds of 6 sessions (EUR 4,800) | Task success rate above 80% |
| 4. Design system | Library of 40 to 60 components | WCAG 2.1 AA accessibility on components |
| 5. Release-based delivery | Onboarding first, then frequent screens | Activation measured release by release |
| 6. Follow-up at 3 and 6 months | Product dashboard | Activation +15 points, tickets −25% |
Choosing onboarding as the first release is deliberate: it is the screen seen by 100% of new accounts, and the place where activation points are gained fastest.
Signals that justify a redesign
- Activation below 40%: more than half of new accounts never see the product's value.
- 'How do I' tickets: if they exceed 30% of support volume, the interface is the problem.
- Front-end debt: several component libraries coexist, and every new feature costs 30 to 50% more than it should.
- Sales friction: sales demos skip certain screens considered dated.
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Mini case study
Camille, product manager at a scheduling software vendor in Berlin, sees 600 trial accounts a year, 35% of which activate, or 210. Half of activated accounts become customers, at EUR 3,600 ARR each. She commits EUR 97,000: audit at EUR 9,000, design system at EUR 20,000, front-end rebuild at EUR 60,000 and 20 test sessions at EUR 400, or EUR 8,000. If activation rises to 50%, that is 90 more activated accounts, 45 additional customers and EUR 162,000 more ARR. Support tickets fall 25% from 6,000 a year, or 1,500 tickets at EUR 12: EUR 18,000 saved. With EUR 180,000 of estimated annual gains, the project pays back in roughly 6 to 7 months, as an order of magnitude.
FAQ
Should the whole front end be rebuilt at once?
No, gradual migration is almost always better: the design system ships first, then screens are migrated in batches of 5 to 10. The product stays live and each release is measured.
How many user tests should we plan?
Two rounds of 5 to 6 sessions are enough to surface 80% of major issues. At EUR 400 per session including recruitment, the budget is around EUR 4,000 to 5,000.
Is a design system worth it for a team of 4 developers?
Yes, once the product exceeds 30 screens. The speed gain on new features is often estimated at 20 to 30%, which pays back the design system in about a year.
How do we avoid disrupting existing customers?
Announce the redesign, offer an optional switch for 4 to 8 weeks and keep familiar shortcuts. Power users are involved in testing from the prototype phase.
Let's scope your project. We scope your UX redesign (audit, user testing, design system, release-based front-end rebuild) for an indicative budget of EUR 70,000 to 125,000 over 5 to 8 months, or EUR 25,000 to 35,000 for onboarding alone. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
