Terms and Conditions
These are the Terms and Conditions for using Tulbrain.
Effective date: October 21, 2026
1. Acceptance.
These Terms and Conditions (“Terms”) govern your use of the Tulbrain application and related services (the “Service”) operated by NETMIND CLOUD LLC (“we”, “us”). By creating an account or using the Service, you agree to these Terms. If you do not agree, do not use the Service.
2. The Service.
The Service provides interactive learning and practice content, organized in modules such as Languages, Speed Reading and Mind Training: lessons, practice exercises, games and progress tracking. Content is educational; we do not guarantee any specific learning outcome.
3. Accounts.
You may sign in using supported identity providers (such as Apple or Google). You are responsible for the security of your device and sign-in method, and for the accuracy of the information you provide. You must be at least 18 years old to use the Service.
4. Paid plans and payments.
The Service can be used without paying, except in the United Kingdom, where it is available by subscription only. Where we offer a paid plan, it is sold through the Apple App Store or Google Play: billing, renewal, cancellation and refunds are handled in your store account under that store’s terms, and we cannot issue refunds directly. Some features may be available only on a paid plan. Paid plans renew automatically until you cancel them in your store account. Before you buy, the app shows the price, the billing period, how to cancel, and your withdrawal rights where they apply. If you buy the Founders plan, the Founders Terms also apply to it.
Paid plans.
Our paid plans give access to the paid features of the Service across all of its modules, including new modules as and when we release them while your plan is active. The only additional charges that may apply are for extra storage and AI usage, such as AI tokens: only for new or additional capacity, offered separately through your app store and shown before you buy.
Price changes.
We may change the price of the Monthly and Annual plans. A new price never applies to a period you have already paid for: it applies from your next renewal, your store tells you in advance, and where your store or the law requires it, it applies only if you accept. If you do not want to pay the new price, you can cancel before it applies. The Founders plan keeps its own price protection (Founders Terms, section 3).
5. Acceptable use.
You agree not to: misuse, disrupt or overload the Service; attempt to access other users’ data; reverse engineer, copy or resell the Service or its content; use bots, scrapers or other automated means to access the Service or to extract its content; copy, download (except as the app allows for your own learning), extract, reuse or redistribute its content — including illustrations, audio, texts and lessons — or any substantial part of its selection and arrangement; use the Service or its content to build a competing product or to train or improve any artificial intelligence model; or use the Service for unlawful purposes. We expressly reserve all rights to text and data mining of the Service and its content, including under Article 4(3) of Directive (EU) 2019/790.
6. Intellectual property.
The Service and its content — including the software, the design, the texts and lessons, the illustrations and audio, and the selection and arrangement of words, phrases and exercises — are owned by or licensed to NETMIND CLOUD LLC, except (a) the third-party content described in section 15, which remains under its own license, and (b) public-domain works, which remain in the public domain. The illustrations and audio in the Service are generated with artificial intelligence tools, and so are some of its texts and translations. We grant you a personal, non-exclusive, non-transferable, revocable licence to use the Service for personal, non-commercial learning. Third-party names, logos and trade marks shown in the Service belong to their respective owners and are used under their brand guidelines.
7. Disclaimer.
The Service is provided “as is” and “as available”, without warranties of any kind to the maximum extent permitted by law.
8. Limitation of liability.
To the maximum extent permitted by law, NETMIND CLOUD LLC shall not be liable for indirect, incidental or consequential damages. Our total liability for any claim shall not exceed the amount you paid for the Service in the twelve months preceding the claim.
9. Termination.
You may stop using the Service at any time and may request deletion of your account. We may suspend or terminate accounts that violate these Terms.
10. Changes.
We may update these Terms. Material changes will be notified in the app. Continued use after the effective date constitutes acceptance.
11. Governing law.
These Terms are governed by the laws of the State of Wyoming, USA. This does not remove the protection given to you by the consumer law of the country where you habitually live (see section 13).
12. Contact.
NETMIND CLOUD LLC, 1621 Central Ave, Cheyenne, Wyoming 82001, USA — hello@netmindcloud.com. These Terms should be read together with our Privacy Policy, published at tulbrain.com/en/privacy/.
13. Your mandatory rights.
No provision of these Terms, including sections 7, 8 and 11, applies to the extent that it would exclude or limit any right or remedy that cannot be excluded or limited by law in the country where you habitually live.
14. Severability.
If any provision of these Terms is found to be unenforceable, the remaining provisions continue in full force.
15. Third-party content.
The Tulbrain dictionary includes data from WikDict (https://www.wikdict.com), derived from DBnary and Wiktionary, licensed under the Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license, https://creativecommons.org/licenses/by-sa/4.0/. The data is provided “as is”, without warranties.
16. Energy.
(a) What it is.
Some activities in the Service use energy, and the app shows you your balance. Energy is not money and has no monetary value: it can’t be exchanged for money, transferred to another account or sold, and it can only be used within the Service.
(b) Free energy and green energy.
- Free energy. Each day, your free energy tops up to 10. If you didn’t use it, it doesn’t add up or carry over to the next day: free energy doesn’t accumulate.
- Green energy. It’s the energy loaded in your account, for example the energy you buy in packs (paragraph d). It doesn’t expire while your account exists, and it has no maximum.
(c) Order of use.
Free energy is always used first, then green energy.
(d) Energy packs.
Packs are sold through Apple’s App Store or Google Play, at the price the store shows you before you buy. The energy is credited to your account as soon as the store confirms the payment. Your balance is stored on our servers, tied to your account and not to your phone, so you keep it if you change devices and sign in with the same account.
(e) If you subscribe.
While you have an active paid plan, energy doesn’t limit activities. Your green energy isn’t deleted or converted: it stays saved and you can use it again if your plan ends.
(f) Refunds.
Refunds for a pack always go through the store where you bought it: App Store refunds can only be made by Apple; Google Play refunds can be made by Google Play or, where applicable (for example, if you withdraw from the purchase), by us through Google Play. If a pack is refunded, we deduct from your balance only the energy from that pack that you haven’t used. Energy you’ve already used isn’t affected. A refund never leaves your balance negative or blocks your account. This doesn’t limit your right of withdrawal where the law of your country gives it to you (section 13): to exercise it, write to us at hello@netmindcloud.com or use the withdrawal link on our website.
(g) If you delete your account.
Deleting your account deletes your energy balance, including any green energy you haven’t used, and it can’t be recovered. If you have purchased energy you haven’t used and delete your account from the current version of the app, we warn you first.
(h) Changes.
The energy you buy consists of prepaid units: a change never reduces the amount of energy you already have or gives it an expiry date. What may change, like a rate, is how much energy each activity uses, which activities use it, how much free energy tops up and the content and price of the packs. If a change is unfavourable to you (for example, if an activity starts using more energy or if the daily free energy goes down), we’ll tell you in the app at least 30 days in advance. If the change increases the energy an activity uses and you don’t agree, within that period you can ask us at hello@netmindcloud.com for a refund of the purchased energy you haven’t used: we refund Google Play purchases ourselves, and App Store purchases are requested from Apple.
(i) Where there’s no energy.
In the United Kingdom, the Service is available by subscription only: there’s no energy and there are no energy packs.