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Case Study / Platform Scale

Shaping Core UX for 14+ Years

Over fourteen years at ImmoScout24, I shaped core experiences across app and web. From 2020 to 2024, I was the dedicated designer responsible for UX and UI across the iOS and Android apps.

My work covered navigation, search, result lists, property details, saved listings, messaging, the home feed and the app design system.

ContextA mature real estate marketplace with millions of users and many interconnected product areas.
Official RoleSenior UX Designer.
App ResponsibilityDedicated designer for iOS and Android from 2020 to 2024.
ScopeNavigation, search, results, property details, saved experiences, messaging, home feed and design system.
CollaborationProduct managers, researchers, engineers and designers across web and vertical product teams.
ImmoScout24 mobile app core features
Four connected parts of the mobile journey that I shaped across iOS and Android.

The Product Context

One product. Many different user intentions.

The apps had to support renters, buyers, owners and people managing existing properties. Each group entered the product with different goals, levels of urgency and expectations.

My responsibility was to keep these journeys coherent while individual teams continued to develop separate features and services.

Design Judgment

Design for continuity

01

Maintain product continuity

Connect navigation, search, result lists, property details and saved experiences so users do not have to relearn the product at every step.

02

Protect decision clarity

Make complex property decisions easier to scan, compare and revisit across app and web.

03

Keep patterns consistent

Review new features and integrations so they fit the wider app experience and do not introduce unnecessary fragmentation.

App Responsibility

Four years as the dedicated app designer

From 2020 to 2024, I was the only dedicated designer responsible for both the iOS and Android apps.

UX decisions were developed together with product managers and researchers. I was responsible for UI decisions, cross feature consistency and the quality of app related concepts and implementations.

New features created by other teams were reviewed by me before they were integrated into the apps.

Core Journey

One connected journey

Search, result lists and property details formed the core journey for most users.

I worked across app and selected web surfaces to keep interaction patterns, content hierarchy and visual language consistent between these connected steps.

The goal was not to make every platform identical. It was to preserve orientation and trust while respecting the strengths of each device.

Property detail experience across desktop and app
Property detail experience across desktop and app

Product Example

From search results to a personalised starting point

Before the home feed, users entered the app through search results.

The new feed introduced a broader starting point with new listings from saved searches, recommendations, editorial content, internal products and lightweight user research prompts.

Personalisation was based on saved searches and previous behaviour. Users could hide product content that was not relevant to them, and that preference was remembered.

ImmoScout24 personalised home feed
What We Learned

Users understood and accepted the content and structure.

The distinction between the feed and the result list was not always clear.

Product Stewardship

New features had to fit the wider app experience

Features and products created by other teams regularly needed to be integrated into the apps.

I reviewed these concepts for UX, UI and consistency, checked their fit with existing navigation and interaction patterns and worked with the teams to resolve issues before release.

Product managers, engineers and designers also relied on my knowledge of earlier decisions and recurring user problems when revisiting existing parts of the product.

01

Review app integrations

Check new features before they enter the apps.

02

Protect visual consistency

Keep UI decisions aligned across iOS and Android.

03

Preserve product knowledge

Help changing teams understand earlier decisions and recurring user needs.

Selected Highlights

Selected work across the app

Personalised Home Feed

Structure, content hierarchy, personalisation logic and navigation for a new app starting point.

App Design Stewardship

UX and UI review of new features and product integrations before release.

Brand and Pattern Evolution

Repeated visual and brand changes while protecting familiar interaction patterns and product continuity.

Examples of ImmoScout24 app highlights
Examples of home feed, AI search and brand evolution across the apps.

Evidence of Impact

Long term value without invented metrics

Released Work

Core app concepts and improvements were repeatedly released across iOS and Android.

Long Term Use

Patterns for search, results, property details, saved experiences and the home feed remained part of the product over multiple years.

Cross Team Value

Product managers, engineers and designers relied on my product knowledge when revisiting existing patterns or integrating new features.

Learning

Long term products need memory

In a product with changing teams and responsibilities, continuity does not happen automatically.

One of my most important contributions was preserving the reasoning behind earlier decisions, recognising recurring user problems and helping new teams understand how individual changes affected the wider app experience.

The goal was not to prevent change. It was to make change deliberate.

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