Architecture Discovery
A mobile AR concept that lets people explore architecture through their phone — discovering buildings, layers and stories in physical space.
What is PlutoPay?
PlutoPay is a fintech mobile app concept that helps young adults track shared expenses and split bills effortlessly. Designed solo over 4 weeks — from research to high-fidelity prototype in Figma.
The Problem
Splitting expenses in groups is messy. People lose track of who paid what, reminders feel awkward, and existing apps are cluttered with features nobody uses.
The Goal
Create a clean, trustworthy app that makes adding an expense take under 10 seconds — with clear balances at a glance and zero awkwardness when settling up.
As a freelance concept project, KUBIK started from a defined proto-persona and empathy map — assumption-based tools I used to focus the design on one clear scenario: someone standing in front of a building, wanting instant context without effort. These are hypotheses to be validated, not field findings — but they kept every design decision anchored in a real situation.
User Persona
A working student new to Cologne who loves discovering the city on foot, but finds existing history apps text-heavy and slow to use on the move.
Empathy Map
Mapping what she says, thinks, feels and does surfaced the core need: instant, visual context without effort — no registration, no long reads, no standing around looking lost.
With the persona's needs defined, I mapped how users would move through the app — from spontaneously discovering a place to building and saving personal tours. The flow splits into two clear paths, keeping casual exploration and deeper engagement separate.
User Journey Flow
Two entry points shape the experience: Discover as visitor for instant, no-login exploration, and Favorites & Tours for saving places, building routes and revisiting Cologne's stories.
Swipe to explore →
With the flow in place, I moved from structure to screens — starting rough on paper, then building up to a full UI and a consistent style guide.
Wireframes
I began with low-fidelity paper sketches to test layout and hierarchy fast — the onboarding slider, place overview, the past-vs-present comparison and the audio-guide player all took shape here before any pixel work.
Low-fidelity paper sketches
Style Guide
The visual system is built for outdoor use: a warm orange accent that stays visible in sunlight, high-contrast dark text, and Poppins — chosen for its geometric structure and excellent readability on mobile screens on the move.
Typography & colors
Prototype
I built a clickable prototype in Figma covering the core flows — discovering a place, comparing past and present, and playing the audio guide. Try it yourself below.
KUBIK gave me the space to own a full concept on my own — from defining who it's for to shaping every screen. Working from a defined persona and empathy map kept every decision anchored in a real situation: someone standing in front of a building, wanting context fast, without effort.
The real challenge was translating an AR experience into a flat design tool. It pushed me to find clear visual metaphors — the scan frame, the past-vs-present toggle — that communicate depth without real AR. I also learned to focus over feature count, splitting the app into two clear paths instead of piling on features.
The natural next step would be validating these assumptions with real people on Cologne's streets — testing whether the scan-to-story flow works without any explanation.
