Duskie Privacy Policy

Effective July 11, 2026

Duskie is a sunrise and sunset forecasting app. This policy explains, in plain terms, what happens with your data when you use it. The short version: Duskie doesn't have accounts, doesn't run its own servers, doesn't use analytics or advertising SDKs, and stores everything it remembers about you only on your own device.

Location

Duskie can use your device's location to forecast sunrise and sunset quality near you. It only requests your location when you tap "Use my location" while picking a place to forecast — it does not track your location in the background or continuously.

The request is a single, one-time fix using iOS's "when in use" authorization (Duskie never asks for "always" access), and iOS shows you the system permission prompt before anything happens. If you decline, or never tap "Use my location," Duskie simply works from whatever city you've searched for or its default location instead.

To produce a forecast, the coordinates of whichever location is selected — whether from your device, a city search, or the app's default — are sent to the weather and air-quality services described below, because those services need to know where to compute a forecast for. Duskie has no server of its own; there is nothing for coordinates to be sent to other than these public forecasting APIs, and nothing about you is attached to that request beyond the coordinates and timestamp needed to answer it.

Location search

If you search for a place by name instead of using your current location, the text you type is sent to Open-Meteo's geocoding service to look up matching cities and their coordinates.

Third-party services Duskie calls

Duskie talks directly to the following public data providers over the network. None of them require an account, API key, or sign-in, and Duskie sends only the minimum data each one needs to answer a request:

• Open-Meteo (weather & air quality forecast) — receives the latitude/longitude of the selected location, used to return cloud cover, humidity, wind, visibility, precipitation, aerosol/dust, and pressure data for that spot.
• Open-Meteo Geocoding — receives the text you type when searching for a city by name.
• NOAA Tides & Currents (CO-OPS) — Duskie downloads NOAA's public tide-station directory and matches you to the nearest station locally, on your device. Only a station ID and date range are then sent to NOAA to fetch predictions for that station — your coordinates are never transmitted to NOAA.
• CelesTrak — supplies orbital data for the International Space Station using a fixed, public satellite catalog number. This is the same data for every user; no location or personal data is sent.
• NOAA Space Weather Prediction Center — supplies a global aurora-activity feed. This is a static resource with no parameters; no location or personal data is sent.

These are all standard public/open data APIs used for their intended purpose — fetching forecast data for a place — not analytics, advertising, or tracking services.

What's stored, and where

Duskie has no user accounts and no cloud sync. Your saved locations and preferences (forecast length, units, and similar settings) are stored only on your device, using iOS's standard local app-storage mechanism. They are never uploaded anywhere, and deleting the app removes them.

Analytics, advertising & tracking

Duskie does not include any analytics, crash-reporting, or advertising SDKs, and does not use any third-party software libraries at all — every line of code that ships in the app is Viberdyne's own. There are no ad networks, no ad identifiers, and nothing in Duskie tracks you across other apps or websites.

Children's privacy

Duskie is a general-audience weather app that does not knowingly collect personal information from anyone, including children, because it does not collect personal information from anyone at all.

Changes to this policy

If Duskie's data practices change — for example, if a future version adds an optional account or a new data source — this page will be updated and the effective date above will change accordingly.

Contact

Questions about this policy or how Duskie handles data can be sent to duskie@viberdyne.com.