I build native macOS and iOS apps, developer tools, and the backends behind them.
Austria · HTBLA Kaindorf an der Sulm · Swift · TypeScript · Rust
A truly native public transport app for all of Austria. Real-time departures, journey planning, live vehicle positions and disruptions — on iOS (SwiftUI), Android (Jetpack Compose) and Apple Watch, backed by my own TypeScript BFF.
Primary data source: Verkehrsauskunft Österreich (VAO) — the national mobility data platform behind Austria's official transit apps.
oeffigo.app · closed TestFlight beta · Android in development
SwiftUI · Jetpack Compose · TypeScript · Supabase · Redis · Cloudflare · Railway · Live Activities · Apple Intelligence
graph TD
ME(("Johannes Grof"))
ME --> MAC["🖥️ Native macOS & iOS<br/>Swift · SwiftUI · AppKit"]
ME --> AGT["🤖 Agent & Dev Tooling<br/>Rust · TypeScript"]
ME --> NET["🌐 Backend, Networking & CLI<br/>TypeScript · Python · Rust"]
MAC --> OG["ÖffiGo"]
MAC --> BE["BriskEdit"]
MAC --> PO["poise"]
MAC --> NT["NotchTray"]
MAC --> BL["BottleLite"]
MAC --> MP["MacPhone"]
AGT --> PP["PatchPilot"]
AGT --> AP["agent-presence"]
AGT --> CSB["claude-swap-bar"]
AGT --> HK["HealthKit-MCP"]
NET --> IP["ip-multitool"]
NET --> CR["Caruso-Reborn"]
NET --> STD["scooter-tuning-db"]
| Project | Tech | What it does |
|---|---|---|
| ✏️ BriskEdit |   |
Native developer text editor. SwiftUI + AppKit, TextKit 2, Swift 6 — built against the Electron VS Code experience. |
| 🧍 poise |  |
Turns your AirPods into a posture coach using their motion sensors. No camera, no cloud, fully on-device. |
| 📲 NotchTray |  |
Finds menu bar items hidden behind the MacBook notch and surfaces them in a Dynamic Island-style panel. |
| 🍾 BottleLite |  |
Lightweight open-source macOS runner for Windows apps. |
| 🔀 claude-swap-bar |  |
Switch between Claude Code accounts from the menu bar, with live per-window usage meters. |
| 📱 MacPhone |  |
macOS device lab that bridges a real BLE device into an Android emulator's virtual controller. |
| Project | Tech | What it does |
|---|---|---|
| 🦀 agent-presence |     |
Discord Rich Presence for Claude Code and Codex. One ~1.5 MB static binary, no bot token, privacy-safe defaults. |
| 🛠️ PatchPilot |   |
Local-first terminal coding agent. Inspect, plan and apply changes with explicit permissions for every file write and shell command. |
| ❤️ HealthKit-MCP |  |
Read-only MCP bridge for Apple Health — sleep, workouts and training load for any MCP-capable agent. |
| 🧰 ip-multitool |  |
Terminal toolkit for IP intelligence, DNS/RDAP, HTTP checks, subnet math and authorized network diagnostics. |
| Project | Tech | What it does |
|---|---|---|
| 🌐 johannesgrof.me |   |
My portfolio and project site. Bilingual (EN/DE), static, fast. |
| 📻 Caruso-Reborn |  |
Brings internet radio and modern sources back to first-generation T+A Caruso hi-fi systems over UPnP. |
| 🛴 scooter-tuning-db |   |
Open, community-reverse-engineered BLE register and tuning map database for e-scooters. |
| Project | Tech | Status |
|---|---|---|
| 🧰 PortPirate | |
macOS menu bar control center for local dev ports — maps every listener to its process and repo. |
| ⌨️ TypeBot |  |
Stay tuned 👀 |
📦 Archive — unmaintained projects & forks
[!NOTE] These repositories are no longer maintained. They stay public for reference, but expect no fixes, releases, or support.
| Project | Tech | Description |
|---|---|---|
| 🔊 SlamX | |
Want to make your MacBook scream? Fan and thermal control experiment. |
| 📄 DocxToPDF | |
Batch convert DOCX to PDF on macOS via Word and AppleScript. |
| 🎧 Hermes-Discord-Voice | |
Discord voice bridge for Hermes Agent. |
| 🎙️ OpenClaw-Discord-Voice | |
Self-hosted Discord voice bridge for OpenClaw experiments. |
| 📡 arduino-distance-alarm |  |
Distance measurement with a local web dashboard. |
| 📚 EBookToPDF (fork) | |
Ebook to PDF conversion utility. |
Languages
Platforms & frameworks
Infrastructure & services
Tooling
Available for freelance work — websites, small tools and automation, IT support. On-site in south-east Styria, remote across Austria.