Storm Window — Privacy Policy
Storm Window is an activity-aware outdoor weather planning app. We designed it to need as little of your information as possible. We do not require an account, we do not run our own servers that store your location, forecast data, activity profiles, or personal profile settings, and we do not use advertising or third-party tracking of any kind.
Summary
- We don’t collect personal information such as your name, email, or contacts.
- Your location is used only to retrieve a weather forecast for your area.
- Your location, saved locations, activity profile selections, and optional personal profile settings are stored only on your device (and shared with Storm Window widgets and Apple Watch support on your devices where needed). They are never sent to SiPhy.
- Pro+ Apple Intelligence guidance is generated on device when available. Storm Window does not send forecast prompts or AI advisory text to a SiPhy AI service.
- To produce a forecast, approximate coordinates are sent to third-party weather services (Open-Meteo and the U.S. National Weather Service) and to Apple for place-name lookup.
- If you use Storm Window Pro personalization, optional age range, heat tolerance, and air-quality sensitivity settings are used only on device to adjust risk classifications and recommendations. They do not change the reported weather values.
- If you subscribe to Storm Window Pro or Pro+, purchase and entitlement status is processed by Apple and RevenueCat so the app can unlock paid features and restore purchases.
- If you enable imminent hazard alerts, or the Pro+ proactive alerts (window-change, best-window, next-window-changed, daily briefing, or Trips), notifications are scheduled locally on your device from the latest forecast. We do not run a notification backend.
- There are no ads and no third-party tracking SDKs in the app.
Information the app uses
Location. With your permission, Storm Window requests a single location fix at approximately city-scale accuracy (we intentionally do not use precise, street-level accuracy, and we do not track your location continuously or in the background). Alternatively, you can skip location permission entirely and type a city, state, or ZIP/postal code. In either case, the resulting location is used solely to determine which area’s forecast to show.
Location storage. Your chosen location and the most recent forecast are cached locally on your device in a shared app container so the app and its home-screen/lock-screen widget can display your forecast without re-fetching. This data stays on your device.
Profiles and preferences. Storm Window may store saved locations, location names, activity profile selections, activity settings, and optional personal profile settings such as age range, heat tolerance, and air-quality sensitivity. These settings are stored on your device and used to personalize hazard states, recommendations, widgets, Apple Watch views, and safe-window calculations. They are not sent to SiPhy.
Apple Intelligence guidance. Storm Window Pro+ can use Apple Intelligence on supported devices to explain already-calculated forecast guidance in plain language. The app keeps the deterministic risk rating as the source of truth and does not send these prompts or generated explanations to SiPhy.
Notifications. If you choose to enable imminent hazard alerts or a Pro+ proactive alert, Storm Window asks iOS for notification permission and schedules local notifications from the relevant cached forecast — the active location for imminent hazard and per-location proactive alerts, or a pinned trip’s own cached forecast for Trips alerts. The app does not send your location or forecast to SiPhy to deliver these alerts.
Trips. Storm Window Pro+ lets you pin a future date, time, and place (event/trip-anchored planning). A pinned trip’s location and its forecast are stored on your device the same way saved locations are, independent of your saved locations list, and are used only to show you that trip’s forecast and, if enabled, a Trips proactive alert. They are not sent to SiPhy.
Subscriptions. Storm Window Pro and Pro+ purchases are handled by Apple’s in-app purchase system. The app uses RevenueCat to validate receipts, restore purchases, and mirror whether the pro or pro_plus entitlement is active. RevenueCat receives purchase and entitlement data needed to provide that service; it does not need your Storm Window location or forecast cache.
Information sent to third parties
To turn a location into a forecast, the app sends approximate geographic coordinates (and, for text searches, the place name or ZIP you enter) to the following services. It does not send your name, device identifiers, activity profile selections, personal profile settings, or any account information, because the app has none.
- Apple MapKit — converts place names to coordinates and coordinates to a display name (e.g., “Tampa, FL”). Governed by Apple’s Privacy Policy.
- Open-Meteo — provides the hourly storm, heat-index, wind-chill, UV, and air-quality forecast data. See the Open-Meteo terms.
- U.S. National Weather Service (weather.gov) — provides thunderstorm-probability data for U.S. locations. See the NWS privacy policy.
- RevenueCat — validates in-app purchases and subscription entitlements for Storm Window Pro and Pro+. See the RevenueCat privacy policy.
These providers receive only the coordinates (or search text) needed to return a forecast for that area. We do not control, and are not responsible for, the independent data practices of these services; please review their policies.
What we do not do
- We do not collect or store your location or forecast data on SiPhy servers.
- We do not collect or store your activity profiles or personal profile settings on SiPhy servers.
- We do not sell or share your information.
- We do not use analytics, crash-tracking, advertising, or any third-party tracking technologies.
- We do not track you across apps or websites.
Data retention and your choices
- On-device data: Your cached location, forecast, saved locations, activity settings, and personal profile settings remain on your device until you change or reset them within the app, or delete the app.
- Location permission: You can grant or revoke location access at any time in the device’s Settings. Revoking it does not stop the app from working — you can still search by place name or ZIP.
- Deletion: Deleting Storm Window removes all locally stored data associated with the app.
Children’s privacy
Storm Window is a general-audience app and is not directed to children under 13. We do not knowingly collect personal information from children.
International users
The weather services above may process requests on servers located in the United States or elsewhere. By using the app to request a forecast, you understand that approximate location coordinates are transmitted to those services to fulfill your request.
Changes to this policy
We may update this policy from time to time. Material changes will be posted at StormWindow.SiPhy.com with an updated effective date.
Contact
Questions about this policy? Contact SiPhy LLC at support@StormWatch.SiPhy.com.