Tide — Privacy Policy
Effective Date: May 15, 2026 · Last Updated: September 20, 2026
Introduction
Tide is a mobile application that guides your breathing to the rhythm of the real ocean. The app estimates tidal phases from a small set of reference stations (an approximation, not a navigation-grade tide table), optionally pulls live marine data from a public weather API, and animates a breathing pace that matches the wave action at the nearest coast. Contact: cankatsarac@gmail.com
1. What Tide uses
1.1 Your approximate location (optional)
If you grant location permission, Tide reads your device coordinates once to find the nearest coastline point from a bundled list of named coasts shipped with the app. To show a city name, the coordinates are also passed to your operating system’s geocoding service (Apple Maps on iOS, Google on Android), which may send them to Apple or Google under their own privacy policies; Tide does not operate this service. The coordinates, the city name and the selected coast identifier (e.g., pt-lisbon) are then saved on your device only (including the shared storage used by the home-screen widget and Apple Watch companion). They are never sent to any server operated by us.
If you do not grant location permission, Tide uses a curated default coast (Lisbon, Portugal). The app remains fully usable without location.
1.2 Coast and breathing preferences
Saved locally on your device: your last location fix and city name, selected coast identifier, the haptics setting, and a history of recent breathing sessions (date, duration, coast, moon and tide state). Tide follows your system Reduce Motion setting but does not store it. Tide has no streaks.
1.3 What we do NOT collect
- No account, no login, no email address.
- No name, phone number, contacts, photos, microphone, or camera access.
- No advertising SDKs or identifiers.
- No analytics SDKs.
- No backend operated by us — we have no servers that hold user data.
2. How data is stored
All preferences and session history are stored exclusively on your device using local storage. We do not operate a backend; uninstalling the app permanently deletes all data.
3. Third-party data sources
3.1 Open-Meteo Marine API
For live wave and swell data near your selected coast, the app calls the public Open-Meteo Marine API at marine-api.open-meteo.com. Open-Meteo is a free public weather API that does not require an API key or account. The app sends only the latitude and longitude of the selected coastline point (not necessarily your precise device location) and receives wave data in response. See Open-Meteo terms. As with any HTTP request, your IP address is visible to Open-Meteo’s servers.
3.2 RevenueCat purchases
If you choose Tide Pro, the app uses RevenueCat to retrieve purchase offerings and entitlement status from Apple or Google. RevenueCat may process an anonymous app user identifier, purchase and entitlement information, and device/app metadata needed to provide purchase functionality. Tide does not collect your name, email address, or contacts through RevenueCat. See RevenueCat’s privacy policy.
3.3 No other third parties
We do not use Rork, Anthropic, OpenAI, Google Gemini, ElevenLabs, or any other AI provider in the current version, despite some related SDKs being present in the codebase. We do not use advertising networks, analytics platforms, social login, or third-party crash reporters.
4. Legal basis (GDPR / UK GDPR)
| Data | Legal basis |
|---|---|
| Approximate location (when granted) | Consent (Art. 6(1)(a) GDPR) and performance of your request (Art. 6(1)(b)). |
| Marine API request to Open-Meteo | Legitimate interest (Art. 6(1)(f)) — providing the breathing rhythm you asked for. |
5. Children’s privacy
Tide is suitable for general audiences but is not directed at children under 13 (or 16 in the EEA). We do not knowingly collect personal data from anyone. Since the app stores nothing on our servers, you can permanently delete all locally stored data by uninstalling the app.
6. Your rights
- Access: All data is on your device and visible in the app.
- Delete: Uninstall the app, or use the in-app reset, to permanently clear preferences and session history.
- Withdraw consent for location: Revoke location permission in your OS settings at any time. The app continues to work using the curated default coast.
- Lodge a complaint (EEA / UK residents) with your local supervisory authority.
- California residents (CCPA / CPRA): rights to know, delete, correct, opt out of sale/sharing (we do not sell or share), limit sensitive PI use (we collect none), and non-discrimination.
7. Retention
Coast/preference/session data is held on-device until uninstall or in-app reset. Marine API requests are transient and not retained by us; refer to Open-Meteo for their retention.
8. Changes
Material changes are communicated via in-app notice on the next launch.
9. Contact
Controller: Cankat Saraç (sole proprietor)
Email: cankatsarac@gmail.com
Postal address: Contact us by email for the current postal address.
10. App Store terms and Apple’s standard EULA
If you download Tide from Apple’s App Store, your use of the app is also subject to Apple’s Licensed Application End User License Agreement (Standard EULA). The Apple Standard EULA is incorporated by reference for Apple-distributed copies of Tide. These terms do not replace Apple’s App Store Review Guidelines, Apple Media Services Terms and Conditions, or any mandatory consumer rights in your country.
Apple is not the provider of Tide and is not responsible for its maintenance, support, privacy practices, or content. Purchases are processed by Apple and are subject to Apple’s payment, refund, and restore-purchase systems. For our app-specific terms, see the Tide Terms of Service.
11. Localized App Store descriptions
For transparency, the following are the localized descriptions used for Tide in the Apple App Store. These descriptions explain the product but do not change this Privacy Policy or the Apple Standard EULA.
English (U.S.) / English (U.K.) — Tide — Ocean Breathing
Find a calmer rhythm with Tide. Follow a gentle breathing animation inspired by the ocean, shaped by your selected coast and the changing tide.
Use Tide for a reset, mindful pause, or quiet end to the day. Choose a coast, start a session, and let the wave-like rhythm guide each inhale and exhale.
Features: Ocean-inspired breathing sessions; optional location-based coast selection; tidal phase and moon context; session history without streaks or guilt; Reduce Motion support; no account required.
Tide is a wellness and ambient guidance app, not a medical device or treatment. Stop if you feel dizzy or unwell. Tide Pro adds extended history, deeper insights, and advanced coast and moon context; the core breathing experience remains free.
Español — Tide: Respiración marina
Encuentra un ritmo más tranquilo con Tide. Sigue una animación de respiración inspirada en el océano, adaptada a la costa que elijas y al movimiento de la marea.
Elige una costa, inicia una sesión y deja que el ritmo de las olas guíe cada inhalación y exhalación. Incluye contexto de mareas y luna, historial, rachas diarias, temas oceánicos y opción de reducir movimiento. No necesitas una cuenta.
Tide es una aplicación de bienestar, no un dispositivo médico ni un tratamiento. Detén la sesión si sientes mareo o malestar. Tide Pro añade historial ampliado, estadísticas y contexto avanzado; la respiración básica sigue siendo gratuita.
Português (Brasil) — Tide: Respiração do mar
Encontre um ritmo mais tranquilo com Tide. Acompanhe uma animação de respiração inspirada no oceano e baseada na costa escolhida e na maré.
Escolha uma costa, comece uma sessão e deixe as ondas guiarem cada inspiração e expiração. Inclui contexto de marés e lua, histórico, sequências diárias, temas oceânicos e redução de movimento. Sem conta.
Tide é um app de bem-estar, não um dispositivo médico ou tratamento. Pare se sentir tontura ou mal-estar. Tide Pro libera histórico ampliado, insights e contexto avançado; a experiência principal continua gratuita.
Deutsch — Tide: Meeresatmung
Finde mit Tide einen ruhigeren Rhythmus. Folge einer sanften, vom Meer inspirierten Atemanimation, abgestimmt auf deine Küste und die Tide.
Wähle eine Küste, starte eine Sitzung und lass den Wellenrhythmus Ein- und Ausatmung begleiten. Mit Gezeiten- und Mondkontext, Verlauf, täglichen Serien, Meeresthemen und reduzierter Bewegung. Ohne Konto.
Tide ist eine Wellness-App, kein Medizinprodukt und keine Behandlung. Beende die Sitzung bei Schwindel oder Unwohlsein. Tide Pro bietet erweiterten Verlauf und tiefere Einblicke; die grundlegende Atemfunktion bleibt kostenlos.
Français — Tide : Respiration marine
Trouvez un rythme plus apaisé avec Tide. Suivez une animation de respiration inspirée de l’océan, adaptée à la côte choisie et aux marées.
Choisissez une côte, lancez une séance et laissez les vagues guider chaque inspiration et expiration. Profitez du contexte des marées et de la lune, de l’historique, des séries quotidiennes et de thèmes océaniques. Sans compte.
Tide est une application de bien-être, pas un dispositif médical ni un traitement. Arrêtez en cas de malaise. Tide Pro ajoute un historique étendu et des analyses approfondies; l’expérience principale reste gratuite.
Italiano — Tide: Respiro del mare
Trova un ritmo più calmo con Tide. Segui un’animazione di respirazione ispirata all’oceano, basata sulla costa scelta e sulla marea.
Scegli una costa, avvia una sessione e lascia che le onde guidino inspirazione ed espirazione. Include maree e fasi lunari, cronologia, serie giornaliere e temi oceanici. Nessun account.
Tide è un’app di benessere, non un dispositivo medico né una terapia. Interrompi se avverti malessere. Tide Pro aggiunge cronologia estesa e analisi; l’esperienza principale resta gratuita.
日本語 — Tide：海の呼吸
Tideで穏やかなリズムを見つけましょう。選んだ海岸と潮の動きに合わせた、海をイメージした呼吸アニメーションを体験できます。
海岸を選んでセッションを始め、波のようなリズムに合わせて呼吸します。潮汐と月の情報、履歴、連続記録、海のテーマ、動きを減らす設定を利用できます。アカウント不要。
Tideはウェルネスアプリであり、医療機器や治療ではありません。めまいや不調を感じたら中止してください。Proでは履歴とインサイトが拡張されます。基本機能は無料です。
한국어 — Tide: 바다 호흡
Tide와 함께 편안한 리듬을 찾아보세요. 선택한 해안과 조수의 흐름에서 영감을 받은 호흡 애니메이션을 따라갈 수 있습니다.
해안을 선택하고 세션을 시작하면 파도 같은 리듬이 들숨과 날숨을 안내합니다. 조수와 달의 위상, 기록, 연속 기록, 바다 테마, 동작 줄이기 설정을 제공합니다. 계정 없이 사용하세요.
Tide는 웰니스 앱이며 의료기기나 치료제가 아닙니다. 불편하면 중단하고 전문가와 상담하세요. Pro는 기록과 인사이트를 확장하며 기본 경험은 무료입니다.
简体中文 — Tide：海洋呼吸
用 Tide 找到更平静的节奏。呼吸动画灵感来自海洋，并结合你选择的海岸和潮汐变化。
选择海岸，开始练习，让如海浪般的节奏引导每次吸气与呼气。包含潮汐与月相、练习记录、连续记录、海洋主题和减少动态效果。无需账号。
Tide 是健康生活应用，不是医疗器械或治疗工具。感到不适请立即停止。Tide Pro 解锁更长记录和更深入洞察，核心呼吸体验保持免费。
This Privacy Policy applies to the Tide — Ocean Breathing mobile application available on the Apple App Store and Google Play Store.