Selected product work

Products and experiments

A selected set of shipped products, prototypes and tools. Each one starts with a real problem and shows how I move from ambiguity to a useful, testable system.

Cash/MONEY public preview showing a synthetic household cash-flow cycle

Private beta

Founder, product lead and engineer

Cash/MONEY

Connect everyday spending to a clear shared view of budgets, cash flow and household plans.

Shared ledgersBudget cyclesHousehold permissions

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Sympol Git workflow showing grouped repositories and batch controls

Local developer tool

Product builder and engineer

Sympol

Reduce repeated repository switching and make the state of development work visible.

Multi-repository GitDocker controlsAPI and data tools

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Illustrated five-dice Max&Jax turn and scoring flow

Game MVP

Product builder and engineer

Max&Jax

Bring a familiar pub game online while keeping the real-table experience useful.

Five-dice gameplayOnline and offline modesHuman and AI players

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Video research tool

Product builder and engineer

Highlighter

Spend less time scrubbing through long videos and more time with the moments that matter.

Timestamped insightsTranscript contextSelected-moment clips

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Calendar product

Product builder and engineer

CaiLENDAR

Turn messy planning context into a reliable calendar event without repetitive date-picker work.

Editable draftsPrivacy reviewICS export

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Learning prototype

Product builder and engineer

Teach Me Languages

Turn a small pocket of free time into focused German practice with visible progress.

German B1 practiceVocabulary reviewWord Sprint

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Long-running data platform

Product builder and engineer

F1 API

Make fragmented racing history usable, traceable and reusable across products.

Started in 2018Source archiveCanonical data API

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Trivia game prototype

Product builder and engineer

FactiFacts

Make football knowledge playful through a focused, repeatable daily guessing game.

Guess the BallerCareer-path cluesDaily leaderboard

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Private marketplace

Product builder and engineer

My Classifieds

Replace scattered item messages with a clear view of who is interested and what is reserved.

Private accessLikes and reservationsAdmin workflow

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Active experimentation

Product experimenter and automation engineer

n8n Workflow Automation

Shorten the path from an idea to a reliable, observable automation.

AI workflowsAPI orchestrationHuman approval

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Small tools, real practice

A useful result, a few clicks away

Create something personal, turn a thought into a shareable image, or prepare an image for the web. These small tools put practical product ideas in your hands.

Make your screen your own

Background Generator

Build a gradient wallpaper in your own colours. Preview it at your iPhone’s dimensions, then download it ready to use.

Custom colours · iPhone sizes · PNG download

Create a wallpaper

Give your words a visual

Image Generator

Turn a quote or idea into an image worth sharing. Choose a template, add your words and download the finished design.

Choose a template · Add your quote · Download PNG

Design a quote image

Get your images web-ready

Image Converter

Convert an image to WebP or AVIF for the web. Compare the original and converted file sizes before downloading the result.

PNG, JPG or GIF input · WebP or AVIF output

Convert an image