Work.

A selection of projects I have designed, built, or co-founded — from custom poster shops to digital presences for the construction industry.

Noah

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The shared account for groups without a legal form.

Banks usually only open an account in a group's name for registered associations. Noah is the joint account for everyone else — school classes, sports teams and clubs: the money belongs to the group, not to one member who is personally liable. I co-founded Noah in 2026 together with Fabian and Luis and build the product — from architecture to the last pixel, on the same Deno Fresh stack as this site.

Visit site ↗

artwerk studios

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Turn your favorite songs into personalized posters.

artwerk is a passion project I co-founded with two friends. Our mission was to transform your favorite songs into personalized posters, capturing the essence of music and memory in unique visual art. In just seconds, you could create your custom poster and see a live preview — printed on premium paper, produced in an environmentally friendly manner. Sales have since been discontinued; the site stays online as a showcase of what we built.

Visit site ↗

Kirchmaier & Staudacher

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Digital presence for a construction project management company.

Kirchmaier & Staudacher is a project management company dedicated to excellence in construction and real estate development. They deliver personalized project solutions with precision and efficiency, with sustainability at the core of their operations. I designed and built their digital presence — a synergy of expertise and innovation where your vision is their blueprint for success.

Visit site ↗

From the lab.

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Smaller things I build for myself — open experiments living on GitHub.

Kotlin · Jetpack Compose · MapLibre · MIT

Trailscape

Local-first GPS tracking & route planning for Android.

A free, open-source alternative to Strava and Komoot, built natively with Kotlin and Jetpack Compose. Records your rides with crash-safe background GPS tracking, plans routes via BRouter with bike-type profiles, navigates with off-route warnings, imports and exports GPX and works with fully offline MapLibre maps. Reads heart rate, HRV and sleep from Health Connect and turns everything into training plans and a daily readiness score — all local-first: your data stays on your device, no accounts, no cloud, optional self-hosted sync.

View on GitHub ↗

Kotlin · Jetpack Compose · Room

Drops.

A bean memory with dial-in helper for home espresso.

Bought a bean again after a year? Open the app, search, and the recipe and grind setting are right there. Drops keeps a bean library with roaster, roast date and freshness, logs your dial-in attempts (grind size, dose in/out, shot time, sour/bitter/good) and freezes the good one as the bean's recipe — complete with a rotary grind dial like the ring on your grinder. Native Android, local and offline: no account, no sync, no cloud.

View on GitHub ↗

Kotlin · Jetpack Compose · Wear OS

Dottie.

A retro pixel reaction game — one tap decides.

A dot circles a track on its own; tap while it crosses the green zone — the bright center counts as PERFECT and builds a bonus streak. With a rising score the game unlocks twists that remix every round: pulsing zones, drifting zones, a ghosting dot, decoy traps and chained zones. Daily challenge with a shared seed, a sky that cycles from day to night, unlockable dot skins, a Wear OS companion app, spiteful game-over quips, haptic feedback — everything drawn in code, no assets, built natively with Kotlin and Jetpack Compose.

View on GitHub ↗