Write with Pip
Write your book one small stone at a time.
Cairn is a quiet place to write, with a small sandstone guide named Pip. Pip nudges you when you stall, cheers when you show up, and never writes the book for you. It's free, it runs in your browser, and there's nothing to sign up for.
No account. No ads. No trackers. Your words stay on this device.
How it works
A cairn is a stack of stones that marks a trail.
Your chapters are the stones. Each session adds one. Pip keeps you on the trail without getting in the way.
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Open the page and write
A calm, distraction-free page for each chapter. Everything saves as you type, to this browser only. Export your book as a Markdown file whenever you like.
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Pip nudges, gently
One prompt when you start a chapter. A nudge if you've stalled for two minutes. A welcome back after a break, and a short cheer when you hit your goal. You can turn the nudges off.
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Stack the days
Set a daily word goal and watch the streak grow. Missed a day? Pip doesn't do guilt. Ten minutes restarts the streak.
Meet Pip
A small rock with a quill and good instincts.
Pip is warm, brief, a little wry, and allergic to hype. Ask a question and you get a short answer and one small next step. Pip coaches. You write.





- Pip runs in your browser. Pip's guidance is a small library of Markdown notes and a tiny runner that picks the right note for the moment. There's no AI model and no server, and it keeps working offline once the page has loaded.
- Every reply shows its source. Tap "why this?" to see which notes Pip drew from. Nothing is made up.
- Want a chattier Pip? You can bring your own OpenRouter key. It's stored only in your browser, and requests go straight from your browser to OpenRouter.
I'm stuck on chapter 7 and can't find the words.
Being stuck usually means being drained. Walk, listen to a whole album, read good writers, step away briefly, or talk the chapter out loud and transcribe it.
Stuck? Talk this part out loud for two minutes, then tidy it.
why this? prompts/stalled principles/refill_the_well
Pip, on its own, when you come back after a few days away:
Welcome back. Start with ten minutes and no guilt.
why this? prompts/back_after_break
The free promise
Free. Actually free.
No trial, no paywall, no "pro" tier waiting behind the next chapter. The web version of Cairn is free to use, and there's no business model built on your words.
- ✓No accountOpen the page and start. No email or password needed.
- ✓No ads, no trackers, no analyticsNot even the "anonymous" kind. We don't count you.
- ✓Your words stay with youYour manuscript is saved in your browser's storage, never on our server. Export it anytime.
- ✓No AI training on your bookPip never sends your writing anywhere. If you add your own OpenRouter key, only the messages you send Pip go to OpenRouter.
Cairn for iPhone
Pip is coming to your pocket.
The iPhone app adds a planner that works back from your finish date, a tracker for words, streaks and chapters, and voice sessions for the days you can only talk your book out loud.
- Back-planner
- Tracker
- Voice sessions
- DOCX and EPUB export
Today's stone is one paragraph.
That's all. Open the page, write a few sentences, and let Pip handle the nudging.
Start writing, free