The verdict in three sentences
For a Berlin SaaS company with 2,000 customers, a full UX/UI redesign costs 35,000 to 80,000 EUR excluding VAT, audit included, over 3 to 5 months. It pays off as soon as monthly churn exceeds 3 % and cancellation interviews cite usability rather than price. Bringing churn from 4.2 % to 2.8 % preserves several hundred thousand euros of recurring revenue a year, repaying the investment within months.
Diagnose before you redesign
A redesign launched without diagnosis reproduces the same flaws in a prettier interface. The UX audit combines three sources: product analytics (activation funnels, features never opened), support tickets grouped by theme and about ten interviews with active and churned customers. The deliverable is a prioritised list of friction points, each tied to a measurable metric.
| Step | Scope | Duration | 2026 budget (excl. VAT) |
|---|---|---|---|
| UX audit and analytics | Funnels, heatmaps, ticket analysis, 8 to 12 interviews | 3 to 4 weeks | 6,000 to 12,000 EUR |
| User testing | 60-minute moderated sessions, recruitment included | 2 weeks per round | 450 EUR per session |
| Information architecture and flows | Navigation, onboarding, critical journeys | 2 to 3 weeks | 5,000 to 10,000 EUR |
| Design system | Components, tokens, WCAG accessibility, documentation | 4 to 6 weeks | 12,000 to 28,000 EUR |
| Screen redesign | 30 to 80 screens designed and prototyped | 6 to 10 weeks | 12,000 to 30,000 EUR |
| Build support | Front-end review, design QA, adjustments | Ongoing | Included or 700 EUR per day |
| Total | Audit, design system and redesign | 3 to 5 months | 35,000 to 80,000 EUR |
Front-end development of the new interface comes on top if the in-house team cannot absorb it: budget 25,000 to 60,000 EUR depending on technical debt.
The levers that reduce churn
Not every workstream has the same retention effect. In B2B SaaS the clearest gains come from onboarding and from surfacing high-value features.
| Lever | Metric tracked | Observed effect (2026 order of magnitude) |
|---|---|---|
| Guided onboarding with checklist | 14-day activation rate | +15 to +30 points |
| Outcome-focused home dashboard | Weekly logins per account | +10 to +20 % |
| Simpler settings | Support tickets per customer | -20 to -35 % |
| Consistent design system | Lead time for new features | -20 to -30 % |
| Contextual in-app messages | Premium feature adoption | +10 to +25 % |
| Cancellation flow with alternatives | Cancellations saved | 5 to 15 % of requests |
These effects do not add up mechanically, but together they explain how 4.2 % churn can fall to 2.8 % within two quarters of release.
Mini case study
Jonas, CPO of a Berlin SaaS for trade businesses, serves 2,000 customers at an average 180 EUR monthly revenue, or 360,000 EUR MRR. At 4.2 % churn he loses 84 customers a month; at 2.8 % only 56. The investment: audit 9,000 EUR, design system and redesign 50,000 EUR, 12 testing sessions at 450 EUR, totalling 64,400 EUR. The 28 customers kept each month accumulate: after 12 months, 336 more customers, about 60,000 EUR of extra MRR. Cumulative revenue preserved over the year reaches about 390,000 EUR, with the investment repaid by the 5th month after launch.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
FAQ
How much does a SaaS UX/UI redesign cost in Berlin in 2026?
Expect 35,000 to 80,000 EUR excluding VAT for audit, design system and screen redesign. Front-end development comes on top, typically 25,000 to 60,000 EUR.
Should we start with a UX audit?
Yes, it costs 6,000 to 12,000 EUR and avoids repeating the same mistakes. It identifies the 10 to 15 friction points that weigh most on activation and retention.
How many user tests should we plan?
Five sessions per round surface about 80 % of major issues. Two or three rounds at 450 EUR per session, roughly 4,500 to 6,750 EUR, cover a redesign project.
How fast does churn respond?
First activation signals appear within the first month after launch. The churn effect is measured over 2 to 3 cohorts, so 3 to 6 months.
Can we redesign gradually without breaking things?
Yes, by shipping the design system and onboarding first, then screens module by module. This spreads the budget over 2 or 3 quarters and limits risk for the 2,000 customers in production.
Let's scope your project. Share your churn rate, screen count and roadmap and we will propose an audit and redesign scope, a budget in euros and a staged timeline. 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.
