About
Good writing shouldn't need another window.
Most of what we write every day is small: a reply in Slack, an email to a client, a message to a teacher, a comment on a pull request. Small, but it still matters. One wrong word can make a careful person look careless.
Grammar tools have always asked us to stop and go somewhere else: copy the text, open a website or an editor, paste, wait, copy it back. So most of the time, we don't bother.
GrammarDeck brings the fix to the text, not the text to the fix.
Select what you wrote, click once, and the corrected text appears right next to it, in the app you were already using. It fixes mistakes and leaves the rest alone, because your voice is the part worth keeping.
Who we are
GrammarDeck is an independent product, made and run in Kerala, India. It is not backed by investors and does not make money from ads or data. It is paid for by the people who use Pro, and that is the only business we want to be in.
Being small means you can reach the people who build it. Every email to support@grammardeck.com is read by a person.
What we believe
Our principles
Your words are not our product
We check your text and forget it. We never sell data, never show ads and never train AI on what you write.
Fix, don't rewrite
A good editor corrects mistakes and respects the writer. GrammarDeck keeps your meaning, tone and style.
Show every change
No silent edits. You see exactly what changes, and nothing changes until you say so.
Fair, clear pricing
A real free plan, one simple paid plan, prices for India and the world, and cancelling in one click.
Quiet until called
No pop-ups, no nagging, no underlines everywhere. GrammarDeck appears only when you ask for it.
Built to last
Small, careful software that does one job well, and keeps doing it.
Get in touch
Questions, ideas, bug reports or kind words: we would love to hear from you. See the contact page for all the ways to reach us.
Write without second-guessing.
Start free with 5 credits a day. No card needed.