Terms of Use

The Service is provided by Lynex Studio LLC ("Prevena", "we", "us"). These Terms are a legal agreement between you (the "User") and Prevena. You can contact us at info@prevena.app.

You must be at least 13 years old to use Prevena. Users aged 13 to 18 may use the Service only with the consent and supervision of a parent or legal guardian. We may close any account that does not meet these age requirements.

You confirm that you have the legal capacity to enter into a binding contract under the laws where you live.

Prevena creates your account with a random identifier linked to your device and may ask for some information to do so. You are responsible for the security of the devices linked to your account and for all activity through it.

If you suspect unauthorised access to your account, tell us right away at info@prevena.app.

As long as you follow these Terms, Prevena grants you a limited, non-exclusive, non-transferable, non-sublicensable and revocable license to use the Service for personal, non-commercial purposes.

You agree not to: reverse engineer, copy, modify, create derivative works from, rent, sell or commercially redistribute the app; access the Service with automated tools (scrapers, bots); use the Service to create content that infringes others' rights or is unlawful, defamatory, harassing or harmful; or try to get around the Service's security measures.

Prevena is free to download, and its core features are free to use. Some features need Prevena Pro, a paid subscription. In the app, Prevena Pro is bought through your device's app store (Apple App Store or Google Play) and is subject to that store's terms; on prevena.app it can also be bought on the web (see "Subscription on the web" below).

• App store subscriptions renew automatically through the store unless cancelled.
• You are charged the amount shown in the app and in the store at the time of purchase.
• If a plan starts with a free trial, it becomes a paid subscription when the trial ends unless you cancel at least 24 hours before.
• Cancellation takes effect at the end of the current subscription period; there are no refunds for partial periods.
• Refund requests are handled under the refund policy of the store where you bought the subscription.
• Prices and plan features may change; we will tell you about such changes in advance.

You can manage and cancel an app store subscription at any time in your device's store settings.

Subscription on the web

On prevena.app you can subscribe to Prevena Pro on the web. Stripe processes the payment for Lynex Studio LLC, the company behind Prevena. The plans are a 7-day trial for a one-time fee, then a price every 4 weeks, or a price for one year. The amounts, how often they are charged and when the first renewal falls are shown next to the button you tap to pay, and again in the confirmation email we send you. By tapping that button you agree to these terms.

• Automatic renewal: a web subscription renews automatically at the end of each period (every 4 weeks, or every year) and your payment card is charged the renewal price shown when you subscribed, until you cancel. The trial plan becomes the 4-week subscription when the 7-day trial ends unless you cancel before then.
• Reminders: we email you 2 days before a trial ends and 30 days before each yearly renewal, with the date, the amount and how to cancel.
• Cancelling: cancel online at any time from the link in your confirmation email or at prevena.app/subscription (enter your email to get the link), or write to info@prevena.app. Cancellation takes effect at the end of the current period: you keep Prevena Pro until then and are not charged again. Cancelling during the trial means the renewal price is never charged.
• Refunds: write to info@prevena.app within 14 days of your first payment (the trial fee or the first year) and we refund that payment in full to the card you paid with; a refund ends the subscription and Prevena Pro at once. Renewal payments are not refunded, except where the law requires it.
• Failed payments: if a renewal payment fails, Stripe tries your card again over the following days. Prevena Pro stays on for one day after the paid period ends, and the subscription ends if the payment keeps failing.
• Price changes: if we change the price of your web subscription, we email you at least 30 days before the new price applies, and you can cancel before then.
• Prevena Pro bought on the web is used through the Prevena login you create after paying. Deleting your Prevena account does not cancel a web subscription: cancel it as described above.

One-time purchase on the web

On prevena.app you can also buy, once, a PDF doctor report made from your headache quiz answers together with 16 weeks of Prevena Pro in the app. Stripe processes the payment. It is not a subscription: it does not renew and you are not charged again. Prevena Pro starts when you create your Prevena login after paying and ends 16 weeks later.

Refund policy for web purchases: write to info@prevena.app within 14 days of paying and we refund the full amount to the card you paid with. A refunded purchase ends its 16 weeks of Prevena Pro.

Prevena is not a medical device and is not intended to diagnose, treat, cure or prevent any disease. The daily outlook, possible links, medication-day counts, relief routines, AI replies and all other content in the app are for information only.

Relief routines are general self-care exercises; stop if you feel worse. Get emergency help right away if a headache comes on suddenly and is the worst of your life, comes with weakness in your face, arm or leg, or comes with a fever together with a stiff neck, and for numbness, trouble speaking or vision loss that is new to you, lasts longer than an hour or is different from your usual aura.

Always talk to a healthcare professional before making decisions about your health. In an emergency, call your local emergency number or go to the nearest medical facility. Prevena is not liable for the consequences of decisions made on the basis of information in the app.

Content you create through the Service, such as attack records, journal entries, chat messages and profile information ("User Content"), belongs to you. You grant Prevena a worldwide, royalty-free, limited license to host, store, analyse (including for the daily outlook and the chat) and show your content back to you, so that we can provide the Service and create your reports.

You are responsible for the accuracy and lawfulness of your User Content. You agree not to use the Service to create content that infringes others' rights or is harmful, misleading or unlawful.

Prevena uses AI models (Anthropic's Claude) for the daily outlook and the chat assistant. These features need your explicit consent; if you don't give it, the rest of the Service keeps working. The chat is always labelled as AI.

AI output is probabilistic and may contain errors, gaps or misleading information. It is not medical advice. The outlook is shown as Low, Medium or High and never gives a probability or a date for an attack. You are responsible for decisions you make based on these features. Details of AI data processing are in the Privacy Policy.

Apart from User Content, the Prevena brand, logo, app design, interface, text, images, source code and all software components belong to Lynex Studio LLC and are protected by intellectual property laws.

Beyond the limited license in these Terms, no rights to Prevena's intellectual property are transferred to you.

When using the Service, you agree not to:

• Break applicable laws, regulations or the rights of others
• Create fake accounts on behalf of others or misrepresent your identity
• Use viruses, malicious code or network attacks that could harm the Service, its servers or other users
• Try to get around the Service's security, authentication or metering
• Use automated tools to extract data from the Service in bulk
• Harass, threaten or otherwise disturb other users
• Use the Service for commercial resale, white-labelling or agency-type purposes

Prevena relies on third-party services to work: DigitalOcean (hosting), Anthropic (AI), Open-Meteo (weather), RevenueCat (subscriptions), Apple App Store, Google Play and Stripe (payments), Amplitude (usage analytics), Sentry (error reports) and Meta (advertising measurement). Their terms and privacy policies may also apply to you. Prevena is not responsible for the content or performance of third-party services. The Privacy Policy explains what data is shared with them.

If we find that you have broken these Terms or applicable law, we may suspend or permanently close your account without notice.

You can close your account at any time in the app under Profile > Delete My Account, or by emailing info@prevena.app. Deleting your account in the app removes your data from our live database within 24 hours and from backups within 14 days; the Privacy Policy has the details.

To the fullest extent the law allows, the Service is provided "as is" and "as available". Prevena makes no express or implied warranty that the Service will be uninterrupted, error-free, secure or fully suited to your needs.

We do not guarantee the accuracy, completeness or fitness for a particular purpose of the information, outlooks or suggestions in the Service.

To the fullest extent the law allows, Prevena is not liable for any indirect, incidental, special, punitive or consequential damages (such as lost profits, lost data or business interruption) arising from your use of the Service.

In any case, Prevena's total liability is limited to the greater of (a) the total amount you paid for the Service in the 12 months before the event that gave rise to the claim, or (b) USD 100.

You agree to indemnify, defend and hold harmless Prevena, its officers and employees against any claims, lawsuits, damages, costs (including attorneys' fees) and losses arising from your use of the Service, your User Content or your breach of these Terms.

We may update these Terms from time to time. For significant changes we will tell you in the app and update the date at the top of this page. If you keep using the Service after a change, you accept the updated Terms.

These Terms are governed by the laws of the State of Delaware, United States, without regard to its conflict of law rules. For users in Turkey, the mandatory provisions of Turkish consumer protection law remain reserved.

The courts and enforcement offices where the user lives also have jurisdiction over disputes arising from these Terms.

If any provision of these Terms is found invalid or unenforceable, the remaining provisions stay in full force. If Prevena does not exercise a right under these Terms, that is not a waiver of the right.

These Terms, together with the Privacy Policy, are the entire agreement between you and Prevena and replace any earlier oral or written understanding.

For questions about these Terms, you can reach us at:

• Company: Lynex Studio LLC
• Email: info@prevena.app