When we started sketching WriteLoom, the first decision was what to call the unit of work. Every writing tool we'd used treated a chapter as the unit, open the app, see your chapters, click a chapter, edit. The chapter-as-unit model is fine for drafting; it falls apart everywhere else.

We chose the book as the unit instead. A project. The whole arc. Every artifact, outline, characters, world, beats, draft chapters, edits, cover designs, comp set, synopsis, query letter, agent list, reviewer outreach, marketing calendar, hangs off the same project. That choice shaped everything that came next.

This post walks through why the four panels (Plan, Write, Pitch, Sell) ended up where they did, and how the data plumbing makes the AI tools feel like they "know" your book.