Selected object / 01 / live
BrokerTax
Turn an IBKR or DEGIRO export into a reviewable Swiss tax statement—without hiding the warnings.
Inside the project
Independent product studioDigital things. Human instincts.
A practice in
making things.
Useful products. Curious experiments.
Ideas taken out of the notebook
and into the world.
The project cabinet
01 / Objects of independent thought 01BrokerTaxProject exhibit02Automobile MarketplaceProject exhibit03Portfolio WorkbenchProject exhibit
Selected objects / Explore below
Selected object / 02 / working
Automobile Marketplace
Find a car through precise filters, useful listing detail, and a closer look at every photo.
Inside the project
Selected object / 03 / working
Portfolio Workbench
One local view of holdings, cash, private investments, and how allocation differs from your plan.
Inside the project
Thought, shaped into something.
A little intuition.
A lot of making.
Always something to explore.
Selected work
A few things made with intent.
View full collectionBrokerTax
Turn an IBKR or DEGIRO export into a reviewable Swiss tax statement—without hiding the warnings.
The problem
Read the full case study Private Swiss investors have broker exports but still need to reconcile year-end holdings, cash, income, currency conversion, unsupported events and source evidence before using a tax application. BrokerTax prepares a reviewable eSteuerauszug and keeps tax advice and filing submission outside the product.
Automobile Marketplace
Find a car through precise filters, useful listing detail, and a closer look at every photo.
The problem
Read the full case study Car shoppers need a focused way to search a structured inventory, narrow results with vehicle-specific criteria and inspect the details and photos of one listing without losing their place.
Portfolio Workbench
One local view of holdings, cash, private investments, and how allocation differs from your plan.
The problem
Read the full case study Reviewing broker-held positions, multi-currency cash, and manually marked private investments needs one local view that explains allocation and policy drift without sending orders.
Full collection Every stage welcome
Everything on the table.
Filter by stage to see what is shipping, taking shape, or waiting for a better question.
BrokerTax
Turn an IBKR or DEGIRO export into a reviewable Swiss tax statement—without hiding the warnings.
Automobile Marketplace
Find a car through precise filters, useful listing detail, and a closer look at every photo.
Motorcycle Marketplace
Explore motorcycles through riding-specific filters, structured details, and focused photo inspection.
Portfolio Workbench
One local view of holdings, cash, private investments, and how allocation differs from your plan.
DeFi Pool Research
Research liquidity pools without confusing reported metrics, verified state, and missing evidence.
Base Launch Observer
Inspect a token launch through pool activity, historical evidence, and explicit trading-safety boundaries.
Swiss Retirement Planner
Compare Swiss retirement choices with traceable calculations and adviser-ready reports.
Side quests / low stakes
Experiments with a pulse.
Unpolished on purpose. Small tests that keep the practice curious.
03 — About the studio
Good work is a series of useful decisions.
I build independent products to explore problems that interest me. This collection follows the work from the first useful idea through design, implementation, and the decisions that give it shape.
The interfaces tell the story: screenshots, short walkthroughs, and an honest account of what works, what is still an experiment, and what I would try next. No public source code required.
Explore selected workA personal studio notebook. Product thinking, careful execution, and room for unfinished ideas.