Local-first
Transcripts, enrichment, and search live in a local SQLite database. No account required to use the app.
Turn YouTube into a knowledge graph.
A native macOS app. Paste a URL — get the transcript, a summary, key concepts, and a graph that links every video you've ever saved. Runs on your machine. Your data stays in a SQLite file you own.
Download for macOS Source01
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On-device transcription
No captions? Audio is transcribed on your Mac with Apple's speech engine. Nothing is uploaded.
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Knowledge graph
Concepts are extracted and linked across videos. Click a node, land on the source.
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Ask your library
Chat grounded in what you've actually watched, with citations back to the transcript.
How it works
- Paste a YouTube URL.
- Subtitles are fetched — or audio is transcribed on-device.
- Summary, takeaways, and concepts are extracted.
- Everything lands in your searchable library and graph.