Fintech & Mobility Super App
eWa Super App
A modern application tailored for the Austrian market, seamlessly integrating smart parking, e-vignettes, and digital Electronic Wallet (eWa) payments.
The Austrian Market Challenge
Designing a Super App requires balancing complexity. It must house multiple critical services—like smart road tolling, parking meters, and comprehensive digital wallets—without overwhelming the user. The primary challenge was crafting an architecture robust enough for mobility but secure enough for daily fintech operations in EURO (€).
Targeting the Austrian market meant adhering to high expectations of privacy, data clarity, and clean, uncompromised aesthetics.
*Note: Installing the APK may require enabling "Unknown Sources" in your Android settings.
Key Tech
Figma, Google Stitch, Notebook LM, Antigravity, Flutter, Next.js
Deliverable
Functional Android APK & Design System
Trust Through
Dark Mode
I established a dark-mode fintech aesthetic enriched with premium gradients and Material Design 3 principles. The darker palette profoundly reduces eye strain during driving and inherently commands trust, a critical factor when handling user funds.
The digital wallet relies on intuitive swiping mechanics and clearly separated premium card designs. Cross-platform navigation was streamlined to ensure users are never more than a tap away from reserving parking or purchasing an e-Vignette.
The Designer as Builder Trend
From Mockups to Logic
terminal Deployable Android Setup
The 2026 'Designer as Builder' paradigm shifts focus from drawing static screens to building functional logic. Using Google Stitch and Next.js as starting points, I initially utilized Notebook LM to meticulously plan and gather all necessary documentation on Android environments.
This preparation took half a day, ensuring I had the capability to create my first-ever native app. From there, I utilized Google Antigravity and Flutter to transform those UI mockups into a fully functional, deployable Android APK.
"The handoff to engineering wasn't a static PDF, it was a working application with simulated payment logic."
By simulating complex payment logic and real-time state management, the build phase was completed in just 1 full day.
Product Vision
Future Roadmap & Vision
As a working prototype, eWa proves the concept. These are the two strategic phases that would take it from MVP to market-ready Super App.
Phase 1
Expanding the Ecosystem
The immediate next step is transitioning the remaining UI placeholders — including the Mobile Ticket and Insurance screens — into fully interactive, data-driven Flutter screens. This will complete the core Super App experience and deliver a seamless, end-to-end user journey across every eWa service.
- check Mobile Ticket & Transit screens
- check Insurance & document hub screens
- check Full data-driven Flutter integration
- check German language activation
- check Light theme integration
- iOS implementation (low priority since high expansion cost)
Phase 2
The Composable Subscription Hub
A truly innovative feature I have not seen in any competitor: a LEGO-style modular system where users freely add, configure, and stack custom subscription blocks — Netflix, OneDrive, Spotify, gym memberships, and beyond. Users gain total financial transparency, tracking payment dates, monitoring recurring Euro costs, and pausing or cancelling any subscription with a single tap — all from within eWa.
The Future of Collaborative Design
"The eWa Super App proves that combining 20+ years of systematic UI/UX experience with cutting-edge AI logic accelerators allows designers to act as technical bridge-builders. Bridging the gap between functional business solutions and high-engagement interfaces is no longer just a tagline; it's an executable workflow."