A note app built around retrieval

Notes that come back to you

Capture once. Lumen surfaces the right note at the right time — no folders to manage, no weekly review, no discipline required.

Everything in the demo stays in this browser.

Each morning a handful of notes return with a reason: an anniversary, a forgotten idea, or something related to what you're working on now.

Search exact text and meaning side by side. Literal matches on the left, AI-expanded matches on the right, with receipts.

See how much of your archive is alive, stale, or orphaned. Lumen keeps the corpus honest without nagging.

Built for people who have a lot of notes and no time to curate them.