One payment · yours forever

Every AI is rented.
This one is yours.

GreenCube runs on your own PC. No limits, no subscription, and it works offline. Pay once and it’s yours.

GreenCube Lifetime

An AI with no limits, on your own PC.

€9.99 one-time payment
no subscription, ever

Tax included.

Pay with the email of the Google or Microsoft account you'll sign in with. That's how GreenCube recognises your purchase.

Secure checkout by Stripe, card details never touch this page.
What you get, and the questions people ask
What’s included

Everything, on your own PC.

Chat & write

Ask anything: essays, emails, explanations, plans. As much as you want.

Code

Describe an app, a site or a game and it builds it for you.

Make images

Logos, art, wallpapers. No daily count. Needs 12 GB of RAM.

Read your files

PDFs, photos and screenshots. Summaries, explanations, the one line you need.

Study

Turn your notes or a lecture PDF into flashcards and a quiz.

Slides

Ten slides on anything, as a real PowerPoint file.

Questions people ask before buying.

Is it really one payment?

Yes. €9.99 once and it’s yours. No subscription, no renewal, no second charge.

Will it run on my PC?

If it runs Windows 10 or 11 and has 8 GB of RAM or more, yes. A graphics card makes it fast; without one it’s slower, but it works. Check your PC in two questions.

Do I need internet?

Once, to sign in and download the AI. After that it works with no internet: on a plane, in a blackout, anywhere. It only goes online for updates, or if you switch Online on.

Why do I need an account?

Only to check that you paid. It never sees your chats, files or images.

Is it as smart as ChatGPT?

No. The biggest cloud AIs are smarter. GreenCube has no limits, works offline and is yours. That’s the trade.

What if it’s not for me?

Email support@greencube.app within 14 days and we’ll refund you.

Not sure your PC can run it? Check it in two questions.