Privacy Policy

Effective date: October 23, 2026

Headtide is a migraine and headache diary for iPhone and iPad. It is operated by Gawk Digital LLC ("Gawk Digital", "we", "us"). This Privacy Policy explains what information the Headtide app and the website at https://headtide.app collect, how we use it, and the choices you have.

By using Headtide, you agree to this policy. If you do not agree, please do not use the app or the website.

Your headache logs and every health detail you enter stay on your device. There is no account and no cloud sync. We never receive your symptoms, pain levels, medicines, possible triggers, notes or any other diary entry.

We use a small set of service providers for anonymous usage analytics, subscriptions and Apple Ads attribution. None of them receive health data. We do not sell your personal information, and we do not show ads.

Everything you log in Headtide is stored only on your iPhone or iPad. That includes attack start and end times, pain levels, symptoms, possible triggers, medicines and relief, notes and your settings.

Headtide does not sync to iCloud or to any server. Your entries are included in your device's own backup (for example an iCloud or computer backup of the whole device that you control through Apple), and in any backup file or CSV export you choose to create and save yourself. We never receive those backups or files.

If you turn on the Face ID lock, Apple handles Face ID on your device. We never receive biometric data.

You can delete your data at any time with Delete all data in Settings, or by deleting the app. Because we do not hold a copy, we cannot recover deleted entries for you.

Headtide does not ask you to create an account. There is no Headtide login, password or profile, and we do not ask for your name, email address or phone number in the app.

We use PostHog to understand how the app is used, for example whether onboarding was finished, a screen was opened, a log was started or a purchase was completed. These events are tied to a random install ID, not to your name.

Events include basic technical details such as your language setting (locale), device type (iPhone or iPad), operating system version and app version. As with any internet connection, PostHog may receive your IP address, which can be used to estimate an approximate country or region.

Analytics events never include health data: no symptoms, pain levels, medicines, possible triggers, notes or diary text. If you use the app offline, events are sent once the device is back online.

Headtide is offered as an auto-renewable subscription through the App Store. Apple processes your payment and charges your Apple ID. We never see or store your card or payment details.

We use RevenueCat to manage subscription status. RevenueCat receives purchase information from Apple, such as the plan, price, currency, storefront country and renewal or cancellation status, together with an anonymous app user ID. This lets the app know whether your subscription is active and lets you restore purchases.

The anonymous app user ID is linked to the PostHog install ID so that purchase events can be counted alongside other anonymous app events. RevenueCat never receives your logs or any health data.

If you install Headtide after seeing an ad on the App Store, Apple's AdServices framework may provide an attribution token. We use it, through RevenueCat, to learn which campaign, ad group or keyword led to the install. The token does not contain health data.

Headtide does not use the advertising identifier (IDFA), does not show the App Tracking Transparency prompt, and does not track you across apps or websites owned by other companies.

If you send us a message through the contact form at https://headtide.app/contact, we receive your name, email address, the topic you choose and your message. If you email us from the app, we receive your email address and the contents of your message. We use this only to reply and to keep a record of your request. Messages are delivered through our email service provider and our support tools. Please do not include health details. If the app opens your mail app for you, it fills in the subject and the app version only.

The website does not require an account, does not collect headache logs, and does not use advertising cookies or trackers. Your language choice is part of the page address, for example /es for Spanish.

Our hosting provider processes standard technical information, such as IP address, browser type and the pages requested, to deliver the site and keep it secure.

We use the limited information described above to provide and improve the app, check subscription status, restore purchases, measure which App Store campaigns work, fix problems, answer support requests, and meet legal obligations.

We do not use your information for targeted advertising, and we do not make automated decisions about you that have legal or similarly significant effects.

We share information only with service providers that help us run Headtide, under contracts that limit how they may use it: Apple (App Store payments and Apple Ads attribution), RevenueCat (subscriptions), PostHog (analytics), our website hosting provider and our email provider.

We do not sell personal information, and we do not share it for cross-context behavioral advertising.

We may disclose information if required by law, to protect the rights and safety of our users or others, or as part of a merger, acquisition or sale of assets, in which case this policy will continue to apply to that information.

Gawk Digital LLC is based in the United States, and our service providers may process information in the United States and other countries. Where the law requires it, we take steps so that your information receives a comparable level of protection.

Logs on your device stay there until you delete them. Anonymous analytics and subscription records are kept only as long as needed for the purposes above, or as required for tax, accounting and legal reasons. Support emails are kept as long as needed to help you and to keep a record of the request.

Your logs are protected by your device's security, such as your passcode and the optional Face ID lock. We and our providers use reasonable technical and organizational measures to protect the limited information we handle. No method of storage or transmission is completely secure.

You control your logs directly: you can view, export or delete them in the app at any time. You can manage or cancel your subscription in your Apple ID settings.

Depending on where you live, you may have the right to request access to, correction of, or deletion of personal information we hold about you, to object to or limit certain processing, and to withdraw consent. To make a request, use the contact form at https://headtide.app/contact. Because we do not have accounts and analytics data is anonymous, we may need you to share details, such as your App Store purchase receipt or the date you contacted us, to find information related to you. We will not discriminate against you for exercising your rights.

Residents of California and other US states with consumer privacy laws may have the right to know what personal information we collect, use and disclose, to request access, correction and deletion, and to opt out of the sale or sharing of personal information or of targeted advertising. We do not sell or share personal information as those laws define it, and we do not use it for targeted advertising. We do not knowingly collect sensitive personal information on our servers; your health entries stay on your device.

You can use an authorized agent to make a request on your behalf. We may ask for proof of the agent's authority. If we deny a request, you may appeal by replying to our decision or through the contact form at https://headtide.app/contact.

We handle personal information in line with the Personal Information Protection and Electronic Documents Act (PIPEDA) and applicable provincial laws. You may request access to and correction of your personal information, and withdraw consent subject to legal or contractual limits. If you are not satisfied with our response, you may contact the Office of the Privacy Commissioner of Canada.

We handle personal information in line with the Australian Privacy Principles under the Privacy Act 1988 (Cth) and the New Zealand Privacy Act 2020. You may request access to and correction of your personal information. If you have a complaint, contact us first; if you are not satisfied, you may contact the Office of the Australian Information Commissioner or the New Zealand Office of the Privacy Commissioner.

In Mexico, you may exercise your rights of access, rectification, cancellation and opposition (ARCO rights) under the Federal Law on Protection of Personal Data Held by Private Parties (LFPDPPP). In Brazil, you have the rights of data subjects under the General Data Protection Law (LGPD, Law No. 13,709/2018), including confirmation, access, correction, anonymization, deletion, information about sharing, and revocation of consent. In Argentina, you have the rights granted by Personal Data Protection Law No. 25,326, and you may file complaints with the Agency for Access to Public Information (AAIP).

Residents of other Latin American countries may have similar rights under local law. To exercise any of these rights, use the contact form at https://headtide.app/contact. You may also contact your local data protection authority.

Headtide is not directed at children under 13, or under 16 where local law sets a higher age. We do not knowingly collect personal information from children. If you believe a child has sent us personal information, tell us through the contact form at https://headtide.app/contact and we will delete it.

We may update this policy from time to time. When we do, we will change the effective date at the top. If a change is significant, we will give notice in the app or on this website before it takes effect.

Gawk Digital LLC. Contact form: https://headtide.app/contact. We reply in English, Spanish or Portuguese. Please do not include health details in your message.

Terms of Use: https://headtide.app/terms

Support: https://headtide.app/support