
Shizumu is a private writing app. Open it and start the sentence: there is nothing to structure
first, and nowhere to file it. You write to think, you pin what matters, and you trail what continues.
The volume of writing is not the artifact; what you pin is. Every page starts empty, so the first
sentence is the first thing that happens.
Pages flow into a daily memory you can scroll back through and search by content. Pins lift
the lines that matter out of the daily stream: checklists, references, anything you want close
at hand. Trails group writing that belongs together (a project, a book, an ongoing thread of thought)
without forcing you to design a structure first, and the first time you put a page on a trail,
the pins you already kept there come back onto the page. A trail can be a run of dated pages, or
a continuous trail: one living document for a thread that should keep growing, such as a book,
with a marker for each day you wrote in it. That is the one intentional exception, and you choose
it.
The editor is keyboard driven. Type / for a table, a chart, an outline or a block of code; type
@ to reach a page, a pin or a trail. Ctrl+K opens the trail index, Ctrl+P pins from the cursor,
Ctrl+F finds, and a shortcuts panel lists the rest.
Local-first by design. Everything stays on your device, in a SQLite database you can open with
any compatible tool. Sync is optional and end-to-end encrypted: your writing is sealed on your
device before it leaves it, the keys are derived there and never leave, and the relay holds what
it cannot read. Neither can we. Your writing remains yours.
Shizumu fits the writer who keeps a daily log, the developer with one trail per project, the
student capturing reading notes, and anyone who wants a private place to write to think without
learning a system first.