I spent the last month herding Opus5.5 and Astra to make a free open source timegrapher app for Mac/PC/Linux. There was an old GPL2 project called TG that didn't do some of the stuff I wanted like isochronism analysis, FFTs, and period analysis. The app is written in rust and all the analysis is done in a core crate with an app, CLI, and MCP that call into the core. It requires a contact microphone stand to capture sound from a mechanical watch. I also create a CC0 public recording corpus with all the audio I recorded for development and testing (
https://github.com/peterhudson/timegrapher-corpus). This project was mostly to build a tool I wanted, but along the way I learned a lot about vibe coding with AI agents (I haven't really written code much since 2020). Fun learning. hopefully any horologists out there find it useful.