Writing assistant for Windows
Lumina finishes your words, fixes typos and grammar as you make them, and learns how you write — in every app, in English and in the languages you type in English letters. Offline by default.
A small pill appears by your cursor with the word you are typing and the next one you are likely to want. Press Tab to take it, or Alt+2 for the second choice.
Works in browsers, chat, mail and documents — every app you type in.
Finish a sentence and the fix appears right by your text. Tab applies it; keep typing to leave it. Every suggestion shows why it is wrong, with an example — so you learn the rule, not just the fix.
Typos are corrected as you hit space. One Backspace undoes a fix, and Lumina remembers.
Write Hindi, Bengali, Kannada, Tamil and more in English letters — the way you actually text. Lumina learns your mix, suggests your words, and never “corrects” them into English.
The writing engine runs on your PC. What you type never leaves it.
One Backspace undoes a fix — and Lumina remembers not to do it again.
Password fields, private windows and apps you exclude are skipped automatically.
Hold Ctrl+Space in any app and say it. Lumina types your words with punctuation — in English and Indian languages, written in English letters the way you would type them.
Audio is sent only while you hold the keys, turned into text, and never stored by us.
Select text anywhere and press Ctrl+Alt+R: fix it, improve it, shorten it, summarize it, or change its tone. Preview the result, then replace or copy.
The offline engine does the everyday work; AI only steps in when you choose it.
A password manager built on zero-knowledge encryption. Everything is locked on your device before it is stored or synced — not even we can open your vault.
Early access — rolling out soon · included in Pro
Everything Lumina learned — your words, languages, shortcuts and corrections — follows you to every PC. Sign in and it types like you from the first minute.
End-to-end encrypted: synced as data only your devices can read.
A typing trainer built into Lumina: timed tests, word sprints and sentences — plus “My words”, which drills the exact words you type most and stumble on. Personal bests, history and daily streaks.
The writing engine is free forever. Create an account to try Lumina AI, voice typing, Memory Sync and Lumina Pass — no card required.
No. Suggestions, autocorrect and grammar checks run offline on your PC. Text only leaves your computer when you explicitly use a Lumina AI action or voice typing — and then only that selection or that dictation.
Almost everything you type in: browsers, chat apps, email, documents and editors. You can switch it off per app or per website, and it stays out of password fields automatically.
Lumina AI (fix, improve, shorten, summarize and change the tone of any selected text), voice typing in any app, Memory Sync so your learned words follow you to every PC, and Lumina Pass — the zero-knowledge password manager with passkeys.
Yes. New accounts get a free Pro trial, no card required. When it ends you keep everything in the free plan.
Any Windows 10 or Windows 11 PC — 64-bit, 32-bit or ARM. One installer covers them all. A Mac version is on the way.
