Last updated: January 30, 2026
This Privacy Policy describes how this app ("the App") handles data when you use it. The App is designed as a decision-support tool, not a navigation system, and prioritizes local computation, transparency, and minimal data collection.
The App helps users evaluate tidal margin and related conditions in shallow or nearshore waters by combining publicly available environmental data with user-provided assumptions (such as vessel draft).
The App may process the following data only for on-device functionality:
This data is:
To maintain stability and improve reliability, the App may collect limited diagnostic information when errors occur, such as:
This information is collected only when necessary, and only for debugging and quality improvement purposes.
The App itself does not intentionally collect personal information such as your name, email address, or precise location.
However, third-party analytics, crash reporting, or logging services (if used) may automatically collect certain technical information, which can include:
Such data collection is governed by the privacy policies of the respective third-party service providers.
The App relies on public data sources to function, including but not limited to:
These data sources are used in read-only form and do not receive user-specific information from the App.
If third-party analytics or crash reporting services are used, they are integrated solely to:
The App does not sell user data or use it for advertising purposes.
The App may offer subscriptions or other in-app purchases in the future.
All payments are processed by Apple's App Store using your Apple ID. The App does not receive or store your payment information.
Subscription management and billing are handled entirely by Apple, subject to Apple's own privacy and payment policies.
Because the App does not require accounts and minimizes data collection:
The App is not intended for use by children under the age of 13. No personal information is knowingly collected from children.
This Privacy Policy may be updated as the App evolves or as legal requirements change.
Any material changes will be reflected by updating the "Last updated" date above.
The App provides decision-support information only based on user inputs and publicly available data. It does not replace professional judgment, local knowledge, or safe operating practices.
All decisions remain the responsibility of the user.
At this time, the App does not provide a direct contact or support channel. Future versions of the App may include a contact method, which will be reflected in an updated Privacy Policy.