Hi, I'm Tillmann 👋 a developer from Heidelberg who loves building things in the open.

I make small, native macOS & iOS apps in Swift that fix everyday annoyances, and I publish them as open source on GitHub:

🔋 mAhgic: battery health for Mac, iPhone and iPad

📈 Tickado: crypto, stock, ETF & precious metal prices in your menu bar

⌨️ KeyboardBacklight: control your keyboard backlight with keys again, like in the old days

…and more on the way.

Open source gave me so much: the libraries I build on, answers in issue trackers at 2 a.m., strangers sending pull requests. Sharing my own code is how I give some of that back.

☕ Your coffee buys me time for bug fixes, new features, better docs, and the Apple developer fees and test devices.

Not in a coffee mood? A ⭐ on GitHub, a good bug report or a pull request means just as much to me.

Thanks for stopping by & happy hacking! 🚀

github.com/achirus-code