Tsunami-Watch
Your coastal guardian
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Tsunami warnings, advisories & watches from official sources. Stay informed, Stay safe.
Tsunami Watch - Your Coastal Guardian
Stay safe with instant notifications (paid subscription required) for tsunami warnings, advisories, and watches. Tsunami Watch delivers reliable, life-saving alerts for coastal areas worldwide, helping you and your family act quickly when every second counts.
Whether you live along the Pacific Coast, in Hawaii, Alaska, the Caribbean, or travel to tsunami-prone regions like Japan, the Philippines, Indonesia, or Australia, Tsunami Watch keeps you informed with clear, actionable information from official sources.
KEY FEATURES
• Real-time push notifications (paid subscription required) for tsunami warnings, advisories, and watches tailored to your chosen coastlines
• Easy-to-understand dashboard with concise alert details – perfect even in high-stress situations
• Interactive map to visualize threats and monitor coastal risks
• Reliable official data aggregated from trusted government and meteorological agencies
• Privacy-first design – minimal data collection, no ads
Born from a real near-miss experience during a major earthquake in the Philippines, Tsunami Watch was created to provide fast alerts for distant quakes that might not be felt but can still generate dangerous tsunamis.
Perfect for:
• Coastal residents in the US, Canada, Central and South America, and Pacific-bordering countries
• Travelers and families wanting proactive disaster preparedness
• Anyone seeking a simple, trustworthy tool for natural hazard awareness
Download Tsunami Watch today and never miss a critical alert. Stay alert. Stay safe.
Note: This app provides supplemental information and does not replace official emergency instructions from local authorities. Always follow guidance from emergency management officials.
Privacy Policy: https://tsunami.watch/privacy/
Terms of Use (EULA): https://tsunami.watch/terms/
Ratings & Reviews
Choose which areas you want to hear about. For a large coastline, you can limit alerts to selected countries, states, provinces, or territories. If you do not choose any areas, you still receive alerts for the whole coastline.
Your choices are the areas you pick. Tsunami Watch does not use your GPS location to decide which alerts to send. Location stays optional, for the map and distances.
Silence one alert. Mute further updates for a specific event when you no longer need notifications about it.
The developer, Daniel Dale Boydston, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Daniel Dale Boydston
- Size
- 56.8 MB
- Category
- Weather
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- 1 Month Push Notifications $1.99
- 1 Year Push Notifications $19.99
- Copyright
- © 2026 Trevlo Tech LLC