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Terms of use

Last updated November 3, 2026

This text is still being finished. The parts marked "to be completed" are not final.

  1. The agreement
  2. The service
  3. Your account
  4. Work groups
  5. Your content
  6. Acceptable use
  7. Balance, AI and storage, and who pays
  8. Payments and refunds
  9. Ending the service
  10. Liability
  11. Law and changes

The agreement

These terms are between you and [to be completed], tax ID [to be completed], with address at [to be completed], who runs Brain. By creating an account or using Brain you accept them and our privacy policy.

The service

Brain is a place to write what is on your mind. An assistant powered by AI files your text as tasks, appointments, notes and contacts, and you can search, edit and share all of it.

The AI can make mistakes. Check what it files; everything it does is shown to you and can be undone. Brain is a tool to help you remember, not advice of any kind, and you should not rely on it alone for anything where a mistake would be serious.

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Your account

  • One account is for one person. You log in with a link sent to your email, so keep your email safe.
  • You must be at least [to be completed: minimum age].
  • What happens under your account is your responsibility. Tell us if you think someone else is using it.

Work groups

Everything you store is in a work group. Every member of a group can see and edit what is in it, and the owner of a group can delete the group with everything in it. What you share stays in the group if you leave. Before putting something in a group with other people, make sure you are happy for them to see it.

Your content

What you write and upload is yours. You give us only the permission we need to store it, process it with the AI at your request, show it to the people you share it with and make copies to keep it safe. You are responsible for having the right to use what you store.

Acceptable use

Do not use Brain to:

  • break the law or the rights of others, or store content that does;
  • attack, overload or try to get into the service or the accounts of others;
  • use the AI to harm people, or to produce or spread illegal content;
  • resell the AI or the storage, or get around the limits of your balance.

We may suspend an account that does, after warning you when we can.

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Balance, AI and storage, and who pays

  • The AI and the storage are provided by Brain. You do not need to bring keys of your own.
  • They are paid from a balance. Every account starts with some, and you can add more. The current prices are on the pricing page.
  • Balance does not expire. When it runs out the AI stops and you cannot add files over the free storage.
  • We never delete your content because your balance ran out. You can always read it, download it and delete it.
  • In a work group, its owner pays for what is in it.
  • We may change prices; a change applies to what you use after it, and never to balance you already bought.

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Payments and refunds

  • Payments are handled by Stripe. The price of a pack is what you pay, taxes included.
  • You can ask for a refund of what you have not used of a purchase within 14 days of paying. It goes back to the card you paid with, and the balance that came from it is removed.
  • This is in addition to any right you have by law, such as the right of withdrawal of consumers in the European Union.

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Ending the service

You can delete your account at any time in Settings; it is deleted 30 days later and you can cancel before. We may end the service to someone who breaks these terms, or the service as a whole, telling you in advance and leaving you time to take your content with you.

Liability

We work to keep Brain available and your data safe, but we cannot promise it will never fail. To the extent the law allows, we are not liable for indirect losses, or for losses that come from the AI's mistakes or from content you or others store. Nothing here limits what the law does not allow to be limited, including your rights as a consumer. [to be completed: any limit of liability, to be reviewed by a lawyer]

Law and changes

These terms are governed by the law of [to be completed], without removing the protection that the law of your country gives you as a consumer.

If we change them in a way that matters, we will tell you by email before they apply. The date at the top is the last change. Questions: [to be completed].

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Write what's on your mind. Brain keeps it organized.

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© 2026 [to be completed]

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