A writing app you buy once.

A subscription buys access for a period. While the payment continues you get the app, the sync, the hosting behind it and whatever the developer ships next; when it stops, the access stops. Dabble is $19 a month and Codex Heim is $15 a month, and in both cases the future updates line reads the same way: yes, while subscribed. Keep in mind that with subscriptions, you are subject to price increases with little notice, or changes to the app that change either your process or your experience. If you are prone to getting "subscriptioned out" or to "subscription sickness", perhaps this is not the right model for you.

A one-time purchase buys a license to the software itself. Scrivener is $59.99 per platform, Vellum $249, Atticus $147, EmberWrite $65 and Calamus $189, each paid once. What varies underneath that word is how much of the future is included: Calamus, Vellum and Atticus include future updates outright, while Scrivener's point updates are free and its major versions are a paid upgrade.

Five years is a reasonable horizon for a novelist, because a series takes about that long and the tool you pick now is the tool you will still be opening in 2031. Priced over that span, the gap between the two models is the whole story.

The five-year figures above compare like with like on price alone, and the like-for-like is not exact. Vellum at $249 and Atticus at $147 are formatters; they do not help you write the book, so a working total for either one has to include whatever you draft in. Scrivener at about $122 drafts the book and hands the formatting to somebody else, which is why the standard advice adds Vellum or Atticus on top.

The subscriptions are closer to complete tools. Dabble carries a Binder, an Outliner, a story bible, a focus mode and sync, and exports DOCX, PDF and Markdown; Codex Heim carries a structured codex, a lineage canvas and an outliner in the browser. What neither does is produce a retailer-ready book: Dabble has no print PDF at trim size, and Codex Heim exports the manuscript only.

Calamus is $189 once for the drafting half and the formatting half together, on Mac, iPad and in a browser, with updates included. Calamus Ideas for iPhone is included with that license too, for capturing notes, quotes and writing sessions rather than drafting the book. Against Dabble paid monthly that is $951 less over five years; against Dabble's own $699 lifetime plan it is $510 less, and the lifetime plan is the fairer of the two to compare with, because it is the one that also stops charging.

The words are yours in every case, and every serious tool in this comparison lets you take them out. That is the part to check before you commit rather than after, because export formats vary more than people expect. Dabble exports DOCX, PDF and Markdown. Codex Heim exports the manuscript only, which means the story bible, the lineage canvas and the structured entries do not come with it. Scrivener, Vellum, Atticus and Calamus all export DOCX among other formats.

Access is the other half. When a subscription lapses the app closes to you, and what you kept is whatever you exported while the account was live. If you write one book a year and take a season off between them, that is a bill running through months when nothing is open. If you write continuously, it is a bill for something you use every day, which is a fair trade.

With a one-time purchase, the version you bought stays yours whether or not you open it for a year. Calamus keeps unlimited books and unlimited words with no per-project cap; Codex Heim, by comparison, allows 10 projects. For a writer with a backlist and several series running at once, that ceiling is worth checking before the first payment.

One caveat is that a book you delete goes to the Archive, and the Archive purges permanently after 30 days. Archive is a recycle bin rather than long-term storage, and a full export kept somewhere separate is ordinary practice with any tool you use. That said, nothing asks you to delete anything: Calamus works like a backlist, so books stay in the software and accumulate one after another, and it accommodates authors writing under several pen names.

For Calamus specifically, $189 covers the whole app rather than a tier of it. There is no premium plan holding back the formatting, no word cap, no per-book fee and no separate mobile purchase.

A single headline price does not always mean you pay only once. Scrivener is licensed per platform at $59.99, so a writer who works on a Mac at home and a Windows machine elsewhere buys it twice, and the iPad and iPhone app is a further $23.99 on top. None of that is hidden exactly; it is just easy to read $59.99 and plan for $59.99.

Vellum's $249 assumes a Mac, because there is no Windows, iPad or browser version. For an author who does not own one, the real cost of Vellum includes a computer, a rented Mac by the hour, or a formatter paid per book. That is a significant qualification on a one-time price.

And a formatter is itself usually the second purchase. Scrivener plus Vellum is $308.99. Scrivener plus Atticus is $206.99. Both totals buy two programs that each do half the job, with a DOCX carried between them on every revision. Calamus at $189 is one purchase that covers both your writing and drafting software and your formatting software, so there is no additional software expense required.

There are real cases. If you want a tool that lives entirely in a browser and syncs without your thinking about it, a subscription pays for the servers that make that possible, and Dabble and Codex Heim are both built that way on purpose. If you would rather spend $19 this month than $189 today, a subscription is the smaller decision, and you can leave after one book without having committed to five years of anything.

The case for buying once is clearer: you expect to be writing in the same tool for years, you want the files and the app to keep working whatever happens to your billing, and you would rather pay attention to the book than to a renewal date.

A useful way to settle it is to ask how long your next book will take and how many books come after it. One book in six months, written in a browser, is a subscription question and $114 of Dabble is a modest bill for it. Three books and a novella across four years, drafted on a Mac and an iPad and compiled to EPUB and print yourself, is the case Calamus was priced for, and $189 covers all of it including the formatting nobody wants to buy twice.

We've priced Calamus appropriately to make an investment in it affordable yet competitive, based on everything our software does in comparison with every other writing software.

If you plan on writing for a long time, and we hope you do, consider making an investment in Calamus. We're here for the long term, to grow with you, and we will continuously be making improvements to our software as time goes on.