Privacy-first software, built to be owned — not rented.
local-first · no telemetry · no ads · nothing sold, ever
A one-person studio out of Munich. By day, an Enterprise AI Architect at Siemens Healthineers. By night, I ship small, sharp, private tools — local-first software that respects the people who use it: no accounts, no tracking, no subscription traps.
→ Experience the whole fleet at onekapisch.com — a curated WebGL world where one swarm of ice cubes becomes a planet, shatters mid-air, and reassembles into every app icon. (~230 cubes, one GPU draw call, real spring physics, ice refracting light at its true index of refraction — 1.31.)
| Product | What it does | Platform | ||
|---|---|---|---|---|
| SkyLocation | Know exactly where you are — even with no signal | iOS · Android | site | |
| Tokens 4 Breakfast | Track AI spend across Claude, GPT, Gemini & more — in your menu bar | macOS | site | |
| Mac 4 Breakfast | All-in-one Mac battery & power — cycle count, temp, live watts, smart alerts | macOS | site | |
| LUMEL | Two-way XDR brightness — push past macOS limits, or dim below the floor | macOS | site | |
Minimizer · open source |
Minimize every window & restore your workspace with one hotkey | macOS | stars | |
| T-MINUSAI | Compare AI models & plans — no hype, no upsell | web | site | |
| TankAlert | Live fuel prices across Germany, by city & station | web | site | |
| Life Hacks Germany | Verification-first guides to living in Germany | web | site | |
Unfold AI · open source |
Read AI output at your pace — layers, bottom line first | Chrome · Firefox | stars |
Local-first by default. No account unless you truly need one. Nothing sold to brokers, no ads, no growth hacks hiding in the work. Buy once, own it — I'd rather ship one honest tool than ten that rent your attention.
Swift / SwiftUI · TypeScript / React · vanilla JS + WebGL (Three.js) · Node · Vercel
onekapisch.com · X · Threads · Bluesky · kapisch@icloud.com
⭐ If one of these saved you time, a star on the open-source ones means a lot.