Slow down. Write anyway.
Bringing the joy and authenticity back to writing.
Calamus is the full writing suite — one calm, uncluttered place to draft, organize, and shape a real, finished book, instead of stitching together five disconnected tools. At your own pace, in the same place, on the same file.
Launch price, down from $189 · Web app + native Mac app included
The full suite
Usually this takes two apps. Now it doesn't.
A dedicated tool for drafting and organizing a manuscript. A separate dedicated tool for formatting and typesetting it into something that looks like a real book. Most writers stitch the two together by hand — exporting, re-importing, hoping nothing shifts in translation. Calamus does both jobs itself, on the same file, without the handoff.
- Draft and organize like a dedicated writing tool — Binder, Focus Mode, Snapshots
- Format and compile like a dedicated typesetting tool — real pagination, running heads, retailer-ready exports
- One writing app on the web, one native app for the Mac — same account, same book
Draft & organize
Format & publish
One file. One app.
Nothing to export, re-import, or reformat
Not another app that almost gets you there
Every trim size retailers accept
US/UK and international print sizes, mass market to large print — built into Compile, not a guess at margins.
Real fonts, properly embedded
Over 1,900 Google Fonts, actually embedded in the exported file — not just named and hoped for.
One manuscript, every distributor
Amazon KDP, Kobo, Apple Books, Google Play Books, Barnes & Noble — the same source, formatted right for each.
The manuscript
A room with one door, and it locks behind you.
No feeds, no pings, no seventeen tabs. Just the page, a Binder that keeps chapters and scenes in order, and a version history that means a bad day of edits is never a permanent one.
- Focus Mode and Composition Mode for zero-distraction drafting
- A Binder for chapters, scenes, and front/end matter
- Autosaving Snapshots, so a bad revision is never permanent
Compile
Press one button. Get a real book.
Not a Word doc pretending to be a book — an actual, paginated, retailer-ready file with the trim size, typeface, and running heads a print book is supposed to have. Compile does the part everyone else makes you outsource.
- Real pagination — text flows and wraps like an actual printed page
- 1,900+ Google Fonts, properly embedded in the exported file
- Running headers/footers, drop caps, scene breaks, block quotes
Ashveil
World Building
Never rename a character by accident again.
Every character, place, faction, and made-up word lives in one linked Codex — tag a name right from your prose, and it's connected for good. No more spreadsheets, no more 'wait, was it Mira or Myra.'
- Eight worldbuilding categories, each with real structure
- Tag a name in your prose to link it straight to its entry
- A relationship map showing how everyone connects
Mira Thistlewood
Character
Ashveil Forest
Location
House Ashe
Faction
The Sundering
Timeline
Old Ashveil Tongue
Language
Blood Magic
Magic System
Launch pricing
Buy it once. Write everything you’ve got.
No trial to burn through, no subscription to remember to cancel. One payment, and Calamus is yours for every book you write from here on.
One-time purchase. Not a subscription.
- Unlimited books, unlimited words
- The full manuscript editor — Focus Mode, Binder, Snapshots
- Compile to EPUB & PDF, every retailer trim size
- 1,900+ Google Fonts, properly embedded
- The full World Building Codex — characters, places, magic, everything
- Every future update, forever
The book in your head doesn’t
finish itself.
Start drafting in Calamus today, and compile to a real, formatted book the moment you’re ready.