Privacy Policy

Effective March 11, 2026

Overview

Surge ("the app") is a tide tracking application. We are committed to protecting your privacy. This policy explains what data the app accesses and how it is used.

Data We Collect

We do not collect, store, or transmit any personal data.

Surge does not have user accounts, analytics, tracking, or advertising.

Location Data

If you grant permission, Surge uses your device's location to find nearby tide stations. Location data is:

Used only on-device to query the NOAA station list
Never transmitted to our servers (we have none)
Never stored beyond the current session

You can use Surge without granting location access by searching for stations manually.

Network Requests

Surge connects to the NOAA Tides and Currents public API (tidesandcurrents.noaa.gov) to fetch tide predictions and station data. These requests contain only station IDs and date ranges — no personal information.

On-Device Storage

Saved locations and cached tide data are stored locally on your device using SwiftData and App Group shared storage. This data never leaves your device.

Third-Party Services

Surge does not use any third-party analytics, crash reporting, or advertising services.

Children's Privacy

Surge does not collect any data from any user, including children under 13.

Changes

If this policy changes, we will update this page with the new effective date.

Contact

Questions? Reach us at [email protected].