Your manuscript stays yours.
A private copy editor that runs on your own machine. Free for indie authors and small business.
On your phone? Send Betty to your computer.
Betty is a program for macOS, Windows and Linux. Leave your email and the download link is waiting for you when you sit down at your computer.
Sent. Open the email on your computer.
Sent. Confirm the newsletter in that email, and your 50% code follows.
Sent. Open it on your computer, and confirm the newsletter there.
That didn't go through. Try again, or email simon@bethaniel.eu
Installers for macOS, Windows and Linux
Got an Intel Mac? Download for Intel instead.
Got a Mac with Apple Silicon? Download for Apple Silicon instead.
Other platforms
Current version:
macOS 12+ · Windows 10+ · Linux. To run locally: 8 GB of free RAM, and ideally Apple Silicon or an NVIDIA graphics card. The cloud needs neither. Details
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Fully private
Runs on your own computer. Nothing is uploaded unless you ask.
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Works offline
No internet? No problem. Edit on a plane, in a cabin, anywhere.
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Free
For indie authors and small publishers. No trial, no subscription.
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You have the last word
She suggests, never overwrites. Every change waits for your yes.
Getting started
Three steps. Then just write.
Download and install
Load in your manuscript
Run a job
Choose one of the four below.
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Improve my writing
When your first draft is done.
A report on your habits as a writer: rhythm, and showing against telling. Advice, not corrections — nothing in your text changes.
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Find errors
Before your beta readers see it.
Spelling, grammar, punctuation and the little words that fell out. Each fix shown for you to accept or dismiss.
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Final readthrough
Before you self-publish, or send it to a publisher.
The typos a reader would notice, and chapters duplicated, missing or cut short.
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Translate
For a version in another language.
Unlike most translation tools, Betty checks that the result reads fluently in the new language. And she takes instructions — "use French cities instead of American ones in the French version."
* Translation runs in the cloud only, on a separate and more power-hungry model.
- 90%+ of spelling mistakes found
- 40–80% of the harder ones — wrong words, missing words — commas aside, depending on your machine
- 9 in 10 of her fixes are the right one
- ≈ 1 kettle of electricity per novel
Benchmarked in public, in five languages. Commas are counted on their own: Betty leaves stylistic commas alone on purpose, and catches only some of the ones grammar requires — plan a human pass for those. See how this was measured →
For teams
Betty means Business.
Running a publishing house or a team of writers, editors, or translators? Give Betty a dedicated machine in your office or a workstation in the cloud — real power, and your documents go nowhere they shouldn't.
Drop me a note and I'll figure out what makes sense for you. (See the license & rights of use for details on when a commercial license is required.)
Stay in the loop
Notes from Betty.
Updates and new features — cozy stuff, I swear. Betty never asks you to sign in, so this is the only way I can reach you. No spam; unsubscribe any time.
Confirm your subscription, and a code for half off your first cloud edit follows.
No cookies, no tracking in the emails. How your address is handled
Betty is free
But coffee isn't.
"If Betty saved you an afternoon of re-reading your own prose in mounting despair, and you want to help me keep building her, buy the team a coffee. It genuinely helps keep the lights on."
Buy the team a coffeeAbout the team
Hi, I am the team!
My name is Simon — I have a Ph.D. in Data Science, and a bunch of experience in software development by now. But let's skip the boring stuff…
I am also the author of the Worldsea Trilogy which you can (and totally should) go buy right now. I love writing stories but I hate fixing typos. That's why I created Betty — so that more stories can come to life, even the ones that do not have the financial backing to hire professional editors.