I build focused, privacy-respecting apps and open-source Swift tools. Local-first, no tracking, no accounts — most are free, and many ship with their full source code.
Built around a simple idea: your podcasts, your games, and your movements belong to you — not to a server.
A modern, open-source podcast player that keeps podcasting free, open, and independent.
Catalog your video game collection and carry it across all your Apple devices.
Your day as a clear timeline of places and movement — and none of it ever leaves your phone.
Borrow and lend tools with the neighbours around you — instead of everyone buying their own.
Sign up with your name and street — your address is never shared publicly.
Add the tools you're happy to share, or see what your neighbours have posted.
Send a short message, agree a time to collect, and you're done. Neighbourly sorted.
Native macOS utilities for the things I do all day — Git, Swift code, REST APIs, and SF Symbols.
Turn ordinary SVG artwork into fully working custom SF Symbols.
Your Git history, always one glance away in the menu bar.
Find and remove unused Swift code — without losing control of your source.
A simple, native REST client for testing your APIs.
Launch apps and shell scripts automatically on the schedule you set.
A menu-bar network-quality monitor with a traffic-light indicator and CSV export.
Inspect and edit MP3 ID3 metadata — from album fields to chapters, artwork, and raw hex.
Several apps ship with their full source, alongside reusable Swift packages you're welcome to build on.
The complete open-source code behind Up Next, the local-first podcast client.
SwiftA Swift API wrapper that fetches video-game playtime data from howlongtobeat.com.
SwiftA macOS network-quality monitor for your menu bar — the source behind Network Light.
SwiftA basic REST client for developers to test APIs, built in SwiftUI.
SwiftRun apps or shell scripts automatically — every hour, minute, or second.
SwiftA second time zone for your Mac menu bar, for keeping an eye on another part of the world.
SwiftThe barcode database behind Game Collector — it turns a game's UPC/EAN barcode into its title, platform, and release region. There's a free public endpoint to test against, and a full API for serious integrations.
Send the EAN/UPC as the query string. The API replies with JSON — an array of matches, since one barcode can map to more than one release. An empty array [] means no match was found.
name — the game's titleplatform — console or platformEAN — the scanned barcode (EAN/UPC)region / regionInfo — release region and country codesource / sourceID — where the record originates (e.g. IGDB)The public endpoint is meant for testing. Building it into your app for real? Get an API key for the full database — get in touch →
https://levelcomplete.de/api/public/search.php?5055060953433[
{
"name": "Street Fighter 6",
"platform": "Sony PlayStation 5",
"EAN": 5055060953433,
"region": 1,
"regionInfo": "at",
"source": "IGDB",
"sourceID": "191692"
}
]I've been building apps since 2009, with my first App Store release in 2010. By day I'm an aerospace engineer; in my spare time I build small, focused apps for iPhone, iPad, and Mac. I care about software that stays local-first, respects your privacy, and doesn't lock you in — so most of my apps are free, and many are fully open source.