Terms of Service.

1. Acceptance of Terms

By creating an account or using Savantiva, you agree to these Terms of Service. If you do not agree, do not use the service.

You must be at least 13 years old to use Savantiva. If you are between 13 and 15 years old and located in the European Union or European Economic Area, you must have the consent of a parent or legal guardian before using the service.

2. The Service

Savantiva is a language learning platform designed to develop real conversational ability through AI-powered dialogue and forced production. We do not guarantee any specific linguistic outcomes. The service may change, expand, or be discontinued at any time, provided we give reasonable notice of any material discontinuation.

We may release certain features in beta or experimental form, clearly labelled as such. Beta features carry no additional availability or accuracy guarantees, and we may modify or withdraw them at any time without advance notice.

3. Accounts

To use Savantiva you must register an account. You are responsible for maintaining the confidentiality of your credentials and for all activity that occurs under your account. You may hold only one account per person. Providing false information during registration, including your age, is grounds for immediate termination.

4. Acceptable Use

You agree not to:

• Use the service for any unlawful purpose or in violation of any applicable regulations
• Scrape, crawl, or extract data from the platform by automated means
• Reverse engineer, decompile, or attempt to extract source code from Savantiva
• Attempt to gain unauthorized access to our systems or other users' accounts
• Harass, impersonate, or cause harm to other users
• Use the service to generate or distribute harmful, illegal, or abusive content
• Use the service to build a competing product or service
• Access or use the service if you are subject to applicable US, EU, UK, or other sanctions that prohibit your use of services provided by Savantiva OÜ or its infrastructure providers

We reserve the right to determine, in our sole discretion, what constitutes a violation of these rules. Violations may result in immediate suspension or termination without notice.

You represent and warrant that you own or have secured all necessary rights to any content you submit through the service, and that such content does not infringe the intellectual property, privacy, or other rights of any third party.

5. Subscriptions and Payments

Savantiva offers both a free tier and paid subscription plans.

Web: Payments are processed by Stripe, Inc. Your payment details are handled directly by Stripe and are never stored on our servers.

Mobile: Subscriptions purchased through the Apple App Store (iOS) or Google Play Store (Android) are processed by Apple Inc. or Google LLC respectively, under their own terms of service. Refunds for in-app purchases are handled entirely by Apple or Google — contact them directly through your device's app store. We are unable to issue refunds for purchases made through app stores. Apple and Google may collect additional data in connection with in-app purchases; please refer to their respective privacy policies.

Subscriptions renew automatically unless cancelled before the renewal date. You may cancel at any time through your account settings or, for mobile subscriptions, through the subscription management settings on your device. We do not provide refunds for unused subscription periods, except where required by applicable law.

EU consumer right of withdrawal: If you are located in the European Union, you have a statutory right to withdraw from a paid subscription within 14 days of purchase without giving any reason. By subscribing and accessing paid features, you expressly request immediate commencement of the service and acknowledge that your right to a full refund is thereby limited. If you withdraw after accessing paid features, your refund will be reduced proportionally to the service consumed prior to your withdrawal request. If you have not accessed any paid features, you are entitled to a full refund.

You are responsible for all applicable taxes on your subscription. We reserve the right to change subscription prices with at least 30 days' advance notice; continued use after the change takes effect constitutes acceptance of the new pricing.

6. AI and Your Conversation Data

"Conversation data" means your messages, the AI's replies, your chosen source and target languages, and session metadata such as timestamps and duration. It does not include your payment information, device identifiers, or content you have not actively sent to the service.

Free tier users: By using the free tier, you grant Savantiva a license to use your conversation data to train and improve our AI models. This is disclosed at registration and constitutes a material condition of free access. You may opt out of this data use at any time by upgrading to a paid subscription or by contacting us at privacy@savantiva.com. Withdrawal of consent applies to future data only — data already incorporated into a trained model cannot be retroactively removed.

Paid tier users: Your conversation data is never used to train or improve AI models.

For clarity, both free and paid tier conversation data is always processed to deliver the service itself (e.g., generating AI responses, tracking your vocabulary). This section concerns only secondary use for training purposes.

AI accuracy: AI-generated responses are produced by statistical language models and may contain linguistic errors, cultural inaccuracies, or outdated information. The service is intended for conversational practice; do not treat AI-generated content as authoritative instruction on grammar, vocabulary, cultural norms, or any other subject matter.

7. Intellectual Property

Savantiva and its underlying technology, design, and content are owned by Savantiva OÜ and protected by applicable intellectual property laws. Nothing in these Terms grants you any right to use our trademarks, logos, or brand assets. "Savantiva" and the Savantiva logo are trademarks of Savantiva OÜ; any use without our prior written consent is prohibited.

You retain ownership of all content you create while using the service. By using Savantiva, you grant us a limited, worldwide, royalty-free license to process, store, transmit, and display your content solely as necessary to provide and improve the service.

Feedback: If you submit suggestions or feedback about the service, you grant us a perpetual, irrevocable, royalty-free license to use that feedback in any way without obligation to you.

8. Indemnification

You agree to indemnify, defend, and hold harmless Savantiva OÜ and its officers, employees, and agents from and against any claims, liabilities, damages, and costs (including reasonable legal fees) arising from: (a) your use of the service in violation of these Terms; (b) your content or data submitted to the service; or (c) your violation of any applicable law or third-party rights. We reserve the right to assume exclusive control of any matter subject to indemnification; you agree to cooperate with our defense of such claims.

9. Termination

We may suspend or terminate your account if you violate these Terms, engage in fraudulent activity, or cause harm to users or the service. We will provide notice where practicable, except where immediate termination is necessary to protect the service or other users.

You may delete your account at any time through your account settings. Upon deletion, your personal data will be handled as described in our Privacy Policy.

If your paid subscription is cancelled or your account is terminated, any outstanding fees for the current billing period remain due.

10. Disclaimers

The service is provided "as is" and "as available" without warranties of any kind, express or implied, including warranties of merchantability, fitness for a particular purpose, or non-infringement. We do not warrant that the service will be uninterrupted, error-free, or free of harmful components. We are not responsible for any loss of data, learning progress, or other content resulting from technical issues.

We make no warranty regarding the linguistic accuracy, cultural appropriateness, or completeness of AI-generated content. AI responses are produced by probabilistic models trained on data that may be incomplete, outdated, or incorrect.

The service may contain links to third-party websites or services. We do not control and are not responsible for the content, privacy practices, or availability of any third-party site. Your access to third-party sites is at your own risk and subject to those sites' own terms and policies.

11. Limitation of Liability

To the fullest extent permitted by applicable law, Savantiva's total cumulative liability to you for any and all claims arising from or related to these Terms or the service shall not exceed the total fees you paid to us in the twelve months immediately preceding the event giving rise to the claim. In no event will we be liable for any indirect, incidental, consequential, special, or exemplary damages, even if we have been advised of the possibility of such damages.

Nothing in these Terms limits liability for: death or personal injury caused by our negligence; fraud or fraudulent misrepresentation; or any other liability that cannot be excluded under applicable law. Statutory consumer rights under EU law are not affected.

12. Business Transfers

If Savantiva OÜ is involved in a merger, acquisition, or sale of assets, your data and the rights and obligations under these Terms may be transferred to the acquiring entity. We will notify you by email before your information becomes subject to a materially different privacy policy.

13. Governing Law and Disputes

These Terms are governed by the laws of the Republic of Estonia, without regard to its conflict of law principles. Any disputes arising from these Terms or your use of Savantiva shall be subject to the exclusive jurisdiction of Harju County Court in Tallinn, Estonia.

If you are a consumer located in the European Union, you also retain the benefit of any mandatory consumer protection provisions applicable in your country of residence that cannot be contractually derogated from. The European Commission provides an online dispute resolution platform at ec.europa.eu/consumers/odr.

14. General

Severability. If any provision of these Terms is found to be unenforceable, the remaining provisions will continue in full force and effect, and the unenforceable provision will be modified to the minimum extent necessary to make it enforceable.

Waiver. Our failure to enforce any right or provision of these Terms does not constitute a waiver of that right or provision.

Assignment. You may not assign your rights or obligations under these Terms without our prior written consent. We may assign our rights and obligations in connection with a merger, acquisition, or sale of substantially all of our assets.

Force Majeure. We will not be liable for any delay or failure to perform resulting from causes outside our reasonable control, including acts of nature, strikes, pandemics, government action, or failure of third-party infrastructure providers.

Entire Agreement. These Terms, together with our Privacy Policy, constitute the entire agreement between you and Savantiva OÜ regarding your use of the service and supersede any prior agreements.

Language. These Terms were originally written in English. If we provide a translated version, the English version controls in the event of any conflict, to the extent permitted by applicable consumer protection law in your country of residence.

15. Copyright Infringement Notices

If you believe that content on the service infringes your copyright, you may submit a written notice to our designated agent. Your notice must include:

• Your name, address, telephone number, and email address
• Identification of the copyrighted work you claim has been infringed
• Identification of the infringing material and its location on the service, with enough detail that we can locate it
• A statement that you have a good faith belief that the use is not authorised by the copyright owner, its agent, or the law
• A statement that the information in your notice is accurate and complete, and that you are the copyright owner or are authorised to act on their behalf
• Your physical or electronic signature

Submit copyright notices to: legal@savantiva.com

Upon receiving a valid notice, we will remove or disable access to the allegedly infringing content and notify the affected user. A user who believes their content was removed in error may submit a counter-notice including: their contact information, identification of the removed content and its prior location, a good faith statement that removal was a mistake, and consent to the jurisdiction of the courts specified in Section 13. If we receive a valid counter-notice and the original complainant does not obtain a court order within a reasonable period, we may restore the content.

Repeat infringers will have their accounts terminated.

16. Changes to These Terms

We may update these Terms from time to time. For material changes, we will notify you by email at least 14 days before the changes take effect. Your continued use of the service after that date constitutes your acceptance of the updated Terms. If you do not agree to the changes, you must stop using the service before the changes take effect.

17. Contact

For questions about these Terms, contact us at legal@savantiva.com.