Offline-first writing, built for series authors
A series is too big to keep in your head.
And sticky notes weren't built for book six. Verkilo is your continuity manager. It remembers every character, location, and loose thread across the whole series, and hands each one back the moment you need it. One desktop app. One purchase. Yours forever.
- Price
- $98 once
- Trial
- 30 days, no card
- Data
- On your computer
A look inside
One window, everything your series needs.
Multi-Book Projects
Characters
Planning Views
Manuscript Reports
Writing History
Story Timeline
The promise
If I disappear, your books don't.
Verkilo checks your license exactly once, when you activate it. After that it never asks again — not for a feature, not for a login, not to confirm you're still allowed to open your own manuscript. Pull the network cable out and nothing changes.
Left alone, the only thing it ever asks a server is whether a newer version exists — once, at launch. It sends no license key and nothing about what you're writing; it fetches a version number and that's all. Turn down the update and nothing else happens.
There is one exception, and it's yours to switch on. A line editor can send a section to Anthropic, OpenAI or Google if you paste in your own API key — your key, your bill. That is the only path by which a word of your manuscript leaves this computer, and it does nothing at all until you set it up.
And every build frees itself. About ten years after I compile a release, that copy stops asking for a key at all — no network, no server, nobody's permission. Each new release carries its own date another decade out, so the switch only ever fires on a version I stopped updating. If I'm gone, that happens on its own.
I write military science fiction under two names and I have seven books out. I built this because I needed it. The promise above is the one I would want from someone else's software.
Everything you need
Built for authors who think in series, not single books.
Series Bible
The whole series, one project
Hit export, get a book
Your Data, Your Computer
Just you and the page
Nothing you write is lost
Why authors choose Verkilo
See how we compare.
| Feature | Verkilo | Scrivener | Atticus | Dabble | Vellum |
|---|---|---|---|---|---|
| Series Bible | |||||
| One-time purchase | $128 | $59.99/platform | $147 | $699 | $199.99 / $249.99 |
| No subscription | $19/mo | ||||
| Desktop / local data | |||||
| Works offline forever | |||||
| Spelling & grammar | Basic | Spelling only | Cloud-based | Basic | |
| Pro EPUB/PDF export | Basic | Word only | |||
| Windows, Mac & Linux | Win/Mac | Mac only | |||
| Household license |
Competitor prices as of 2 October 2026; features as of 31 July 2026.
Questions & answers
Everything you need to know before you buy.
What platforms does Verkilo support?
Is Verkilo a subscription?
Where is my data stored?
Can I try Verkilo before I buy?
What is the Series Bible?
Does Verkilo check spelling and grammar?
What export formats are supported?
How do I activate my license?
Does Verkilo use AI?
Founders & Friends
No subscription. No cloud. Yours forever.
Try every feature free for 30 days — no credit card, no account. Buy once when you're sure, and it's yours forever across all your desktops.
Rather try first? The 30-day trial needs no card and no account.
Direct access to Ben. Questions and bugs answered by a fellow author who builds it.
A voice in what comes next. Make suggestions that polish this into a best-in-class author application.
What's included
- Full-featured 30-day free trial
- Every feature included
- Mac, Windows & Linux
- Use on all your desktop devices
- Free updates for version 1.x
- Your data stays on your computer
- Export to EPUB, PDF, DOCX, HTML & Markdown
- Series Bible for character tracking
- No cloud account or login needed
Founders & Friends is a limited offer. When it ends, the standard $128 license takes its place.
Write your next book in Verkilo.
Every feature free for 30 days. No card, no account. If it earns a place in your workflow, it's $98 once for the first 200 licenses, and yours for good.