SeyloWho it's for
Seylo for writers
A book gathers research, characters, chapters and notes written at 2 a.m. on whatever was nearest. Seylo keeps all of it in one project, the notes from your phone included.
What a book gathers
The research and the pictures that set a scene, a page for each character, the outline, every chapter and the notes that do not fit anywhere yet. A space for each, with folders inside when a space grows.
The note at 2 a.m.
Write it on your iPhone, in the project it belongs to. It is there when you sit down at your desk, with no notes app to empty and nothing emailed to yourself.
Settled things stay settled
A character's age, the year the story starts, the name of the town: record them as the project's facts, one current value for each, with the old ones kept underneath. An AI reading the project sees what you settled, and a suggestion that contradicts it waits for you.
Your AI reads what you wrote
Connect Claude and ask whether chapter twelve contradicts what the project says about a character, or for a summary of your research on a period. It reads your material, saves what it writes as drafts, and cannot delete anything. Connecting your AI is part of Pro.
What it costs
Seylo is free for 3 active projects, with the Library and the browser extension included. Pro is $8.99 per month, billed annually, and is where connecting your AI tools and sharing a project live. The whole list is on the pricing page.
Start with one project
Start your project, then save the first thing you find for it. Everything else gathers around it.