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Portazon - Redesigning a Smart City Super App

Type

UX/UI Design & Redesign

Date

2023-2024

Problem Satement

App users have trouble quickly finding and opening their most frequently used or favorite services, especially in everyday situations, which leads them to use the app less often.

Improving conversion rate, discoverability, and reducing friction in a multi-service ecosystem.

During my permanent role as a Solution Designer at A Eins Business Intelligence GmbH I have worked as a UX/UI Designer for the app “Portazon” and its user and service oriented features. In 2023 we started to plan and conduct a redesign of the app to meet users & stakeholders needs. This case study will show you how all participants and stakeholders worked together to reach this goal. Here is a structure of the case study and what you can expect to read.

CONTENT

Overview, The Challenge, Users & Context, Understanding The Problem, Define, Framing the Opportunity, Strategy & Ideation, Wireframes, Solution & Final Design, Validation & Constraints, Impact, Reflection, Closing Thought

© 2026 Christian Hauptmann

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