Last updated: 5 August 2026.
These Terms apply when you visit Katestai.lt and use its mathematics tests and other learning materials. By using the website, you agree to follow these Terms.
1. Purpose of the service
Katestai.lt provides interactive mathematics tests and educational information. The content supports independent practice and does not replace a teacher, educational institution or individually tailored professional advice.
2. Use without registration
The main tests can currently be used without creating an account. Tasks and answer choices may be generated dynamically, so a repeated test may differ. You are responsible for your device, internet connection and browser settings.
3. Fair and permitted use
You may use the website for personal learning and share links with children, parents, guardians, pupils or teachers. You must not:
- disrupt the website, bypass security measures or attempt unauthorised access;
- use automated tools to collect content at scale or overload the server without prior written permission;
- copy, resell, publish or incorporate the content into a commercial product except where permitted by law or written permission;
- use the website for unlawful, misleading or rights-infringing purposes.
4. Intellectual property
The website design, text, task structure, illustrations, marks and software are owned by their respective lawful owners and protected by applicable law. Normal use of the website and sharing links is permitted. For broader reuse, contact info@katestai.lt.
5. Accuracy of results
We work to keep tasks, answers and explanations accurate, but technical or content errors may occur. Please report an issue to info@katestai.lt. A test result is learning support information, not an official grade or formal assessment of ability.
6. Availability
The website is provided as available. We may change content or features and may temporarily suspend the service for maintenance, security or technical reasons. We do not guarantee uninterrupted availability or compatibility with every device.
7. Limits of liability
To the extent permitted by applicable law, Julij Ostapenko is not liable for indirect loss, decisions based on test results, or interruptions caused by your equipment, connection or third-party services. Nothing in these Terms excludes liability that cannot lawfully be excluded.
8. External links
The website may link to third-party websites or services. We do not control their content, security or privacy practices. Review the relevant terms before using them.
9. Changes to these Terms
We may update these Terms when the website or applicable law changes. The latest version and update date are published on this page. Continued use after an update means that you have had an opportunity to review the latest version.
10. Governing law and contact
These Terms are governed by the laws of the Republic of Lithuania. Send questions, suggestions and error reports to info@katestai.lt.