Disclaimer
Is this project open source? Yes
Is this project completely free? No (free tier + one-time Pro license at $19.99)
Is this project vibe-coded beyond the author’s ability to comprehend how it works? No
Community Directory: [Periodic Notes Synthesizer](https://community.obsidian.md/plugins/periodic-notes-synthesizer)
I have used daily notes for a while, and I noticed the same thing a lot of people here probably have. The notes accumulate, but I almost never go back and read across them. Each day gets captured and then sits there. The patterns, the half-finished decisions, the things I said I would do and then forgot, all of that was buried in a folder I stopped opening.
Periodic Notes Synthesizer is my attempt to fix that for myself. It reads across your accumulated daily and periodic notes and writes one synthesis note. Recurring themes show where your notes agree and where they quietly contradict each other. A this-week section rolls up the current week (Monday start, timezone safe). Open loops surfaces things that are still unresolved and marks them stale once they have been sitting too long. And a said-vs-did section compares the commitments in your older notes against what later notes actually recorded, so you can see what got closed and what is still open.
A note on overlap, since I know the name is close. This does not compete with [Periodic Notes](https://github.com/liamcain/obsidian-periodic-notes) by Liam Cain. That plugin is what creates and manages the daily and periodic notes. Mine reads what already exists and synthesizes it. They sit at different layers, and I use both.
On the technical side: it uses your own API key (Anthropic, OpenAI, or any OpenAI-compatible endpoint), so there is no server, no account, and no backend on my end. I want to be honest about the privacy boundary though, because this community will rightly ask: bring-your-own-key still sends note text to whichever LLM provider you choose. I do not claim notes stay on device. What I can claim is that nothing routes through me.
Source: [GitHub](https://github.com/ibrh96-prog/obsidian-periodic-notes-synthesizer)
Pro license (optional): [Gumroad](https://ibrh96.gumroad.com/l/orevhj)
For those of you who keep long-running daily notes, what do you most wish you could see across all of them? The recurring themes were the obvious one for me, but I am curious what else people would actually read.