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How this thing is built

Notes from building an AI notetaker that never sends your audio anywhere. Mostly macOS internals, on-device models, and the parts that broke.

Bot-free is not the same as local

Most notetakers that promise no bot still upload your call. Here are the three places audio leaves the machine, and a two-minute test that settles which one you are using.

Does Zoom tell people you are recording?

Zoom's own recording always shows, in three places at once. Recording the audio on your own machine does not. Here is what each one does, and where consent law actually lands.

How to record both sides of a call on a Mac

QuickTime and the Screenshot toolbar only capture your microphone. Here are the three ways to get the other side as well, and why two separate tracks beat one mixed file.