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Terms of Use

The Zyvora service is provided by Exnico, s.r.o., Company ID (IČO) 24185540, with registered office at Jaurisova 515/4, Michle, 140 00 Prague 4, Czech Republic, registered in the Commercial Register maintained by the Municipal Court in Prague, Section C, Insert 186659 (hereinafter "we", "us", or the "provider"). By using the Zyvora application, you agree to the following terms. If you do not agree with them, please do not use the service.

1. Description of the Service

Zyvora is an interactive platform that uses artificial intelligence (AI), specifically models from Anthropic (Claude), to provide empathetic conversational support to people who have decided to quit smoking. Zyvora helps manage acute cravings, urges, and the emotional tension associated with quitting, through structured, non-judgmental companionship. Zyvora is designed as a guide, not as a professional tool, therapist, or physician.

2. Essential Medical Disclaimer

ZYVORA IS NOT A PHYSICIAN, PSYCHOLOGIST, OR THERAPIST. THE SERVICE IS NOT INTENDED TO PROVIDE DIAGNOSIS, TREATMENT, OR PREVENTION OF MENTAL OR PHYSICAL ILLNESSES.

  • AI-generated content is for informational and conversational purposes only.
  • Crisis situations: If you are considering self-harm or are experiencing an acute life crisis, immediately contact an emergency line or helpline in your country. Within the EU, the single European emergency number 112 can be reached. If Zyvora recognizes a crisis situation, it will attempt to direct you to a relevant local contact, but it cannot replace immediate professional help.
  • Never disregard professional medical advice because of information you have received from Zyvora.
  • Zyvora provides general information about quitting smoking and about what expert guidelines and studies say about individual methods. It does not assess whether a particular method or medication is suitable for a specific person, and it does not recommend a specific medication, dose or duration of use – that is a matter for a physician or pharmacist.

3. Eligibility and Territorial Restrictions

  • Age: The service may only be used by persons over 18 years of age (or older, depending on the age of majority in your jurisdiction).
  • Sanctions and export restrictions: You may not use the service if you are located in a country or jurisdiction subject to a trade embargo or comparable sanctions of the European Union or the United States of America, or if you are listed on an EU or US sanctions list (e.g., the OFAC SDN List). The current list of sanctioned countries and entities changes periodically; the binding version is always the current list published by the relevant EU and US authorities, not any specific enumeration in this document.
  • By using the service, you represent that you are not a person subject to the above restriction.

4. Use of AI and Generated Content

  • Accuracy: AI may produce inaccurate, incomplete, or misleading information (so-called hallucinations). We strive to prevent this (for example, by ensuring the AI never states crisis-line phone numbers on its own that are not verified in our database), but we cannot guarantee one hundred percent accuracy of every response.
  • Internet search (Premium): Zyvora may look up information on the internet for a reply and lists links to the sources. We are not responsible for the content of third-party websites; the sources serve for verification and do not replace a doctor's advice.
  • Ownership: To the extent permitted by law, you own the inputs you provide to the service. AI responses are provided to you for personal, non-commercial use.
  • Restrictions: It is prohibited to use the service to create harmful content, deceive individuals, circumvent safety mechanisms (e.g., deliberately testing whether the AI will confirm a false health claim), or to perform automated data mining (reverse engineering).

5. Privacy Protection

Your conversations are confidential, but they are also processed by third-party technology (Anthropic) for the purpose of generating responses. Never enter sensitive identifying information into the chat (national ID numbers, passwords, payment card numbers). Details of what data we process, on what legal basis, and for how long can be found in our Privacy Policy.

6. Subscriptions and Payments (Premium)

  • The service is available free of charge and as Premium. The features of each version and any trial periods are described on the website. Free use (without an account and in the Premium trial) is limited to 60 messages per 24 hours; a message that shows a risk is answered even past the limit; Zyvora is not a crisis service, though. Paid Premium has no daily limit.
  • Premium is a subscription for one month or one year. Current prices are listed in the price list. Prices are final; Exnico is not a VAT payer. If you pay in a currency other than the one shown in the price list, the Stripe payment gateway converts the amount at the current exchange rate; the amount in that currency may therefore vary slightly between payments.
  • Payments are processed by Stripe. We never see or store your payment card details.
  • The first payment is made when you order. If you order Premium during the Premium trial of your account, the first payment is made only when the trial ends.
  • Promo codes: you can also get Premium free of charge with a promo code (e.g. from an advertisement, a doctor, or for a review). A code is valid for the period and under the conditions stated with it; each code can be used only once per email address. A code is non-transferable, has no cash value and cannot be exchanged for money. Premium from a promo code is a Premium trial of your account: nothing is charged automatically when it ends, and the same rules apply as for any other Premium trial (see section 8). We may invalidate a code that is being misused.
  • At the end of each period, the subscription renews automatically for the same period and the payment is taken from the same payment method until you cancel. We will remind you by email before it renews.
  • Cancellation: you can cancel at any time in the app (Account → Manage subscription). Premium stays active until the end of the period already paid for, and no further payment is taken.
  • Withdrawal and refund: as a consumer, you may withdraw from the contract within 14 days of your first payment without giving any reason — just write to info@zyvora.ai. We will refund the full amount paid (with no deduction for the time you used the service) within 14 days, to the same payment method. This rule is more favourable to you than the statutory rules (Section 1829 et seq. of the Czech Civil Code), which it replaces. It does not apply to later renewals; for those, simply cancel the subscription.
  • If a payment fails, we will try again. While we retry, Premium stays active for at most 7 days. If the payment cannot be collected, Premium ends.
  • We will notify you of any price change by email at least 30 days in advance; the new price applies only from the following period, and you may cancel before then.

7. Limitation of Liability

Exnico strives to provide the service with due care. However, given the nature of AI technology and the sensitivity of the subject matter, we cannot guarantee uninterrupted availability or the absolute accuracy of the generated responses.

To the extent permitted by law, we are not liable for indirect or consequential damages arising from the use of the service. Nothing in these terms excludes or limits our liability to the extent that such exclusion or limitation is not permissible under Czech law — in particular, liability for harm caused intentionally or by gross negligence, nor liability for harm to a person's natural rights (Section 2898 of the Civil Code).

The service is provided "as is," except for warranties that cannot be excluded under applicable law.

8. Changes and Termination

We reserve the right to amend these terms. We will notify you by email of any material changes (e.g., expansion of your obligations or restriction of your rights) at least 30 days before they take effect. By continuing to use the service after the changes take effect, you signify your agreement to them.

You can delete your account at any time in the app (Account → Delete account); a running subscription is cancelled with it. After a Premium trial or Premium ends, we will email you and delete the account, including saved conversations, after 14 days unless you renew Premium in the meantime; we will remind you once more 3 days before deletion.

We reserve the right to discontinue the provision of the service, in particular in the event of a serious breach of these terms by the user, subject to a reasonable notice period, unless circumstances require otherwise (e.g., security reasons).

9. Out-of-Court Dispute Resolution

In the event of a dispute arising in connection with the use of the service, you may contact the Czech Trade Inspection Authority (ČOI), www.coi.cz, as an out-of-court consumer dispute resolution body, or use the European Online Dispute Resolution (ODR) platform at ec.europa.eu/consumers/odr.

10. Governing Law

These terms are governed by the law of the Czech Republic. Any disputes will be resolved by the competent courts of the Czech Republic. If you are a consumer residing in another EU member state, this provision does not deprive you of the protection afforded to you by the mandatory provisions of the law of your country of residence.

11. Governing Language

These Terms of Use may be made available in several language versions. The Czech-language version is the only legally binding version. Any other language versions, including this English version, are provided for informational purposes only and, in the event of any discrepancy, the Czech version shall prevail.

12. Contact

Exnico, s.r.o., registered office at Jaurisova 515/4, Michle, 140 00 Prague 4, Czech Republic, Company ID (IČO): 24185540, registered in the Commercial Register maintained by the Municipal Court in Prague, Section C, Insert 186659. Questions about the service and subscription: info@zyvora.ai. Personal data: privacy@zyvora.ai.

13. Effective Date

These terms take effect on November 11, 2026.