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.
A pin holds the whole passage. Select several blocks and pin them, and the pin keeps every one of them, in order, after an edit, after a restart and on your other device. Before, the pin came out with only the first block in it. Editing a pin of several blocks replaces each block on the page once, with nothing left over, and choosing a trail for a new page brings such a pin onto it whole. If part of a selection is already pinned, the app says so instead of offering a pin button that does nothing.
The desktop looks like the phone. The page sits on the desk as a sheet with a visible edge in cream, white and dark. Text that should step back uses a quieter colour instead of fading, and every screen was measured for contrast in all three tones. The page dots are crisp, with the current page as a small pill in the accent colour. Pin and modal titles rename in place, keyboard focus shows the same ring everywhere, and the interface labels use the phone's typeface.
On the phone, @ mentions a page, a pin or a new trail, and backlinks list the pages that mention them. Deleting a page from the pages of the day asks first. Ticking a task no longer jumps the page to its end, editing a pin no longer adds an empty line to it, and a table's last cell can be tapped again.
A trail can be renamed or deleted from where you look at it: the trail sheet on the phone, and ctrl+k on the desktop. Deleting a trail keeps its pages, without a trail, and trails inside it move up with their pins.
Pairing a device to an account that is already full no longer leaves the new device half set up. Its keys are saved only once pairing completes, it waits between retries, and the message says the account is full.
Smaller fixes: mentions follow a page renamed or deleted on the other device, backlinks include pages written on the other device, screen readers hear the desktop's notices and every icon button is named, reduced motion stills every animation, scrolling in a modal stops at its edge, and Android builds use 16 KB memory pages.
