Privacy Policy
Shinkai Sky (the iOS app, the Chrome extension, and the website at weather.tinytoolsstack.com)
The short version: Shinkai Sky shows you the weather. It does not have accounts, does not run ads, does not track you, and does not sell or share your data. When you ask for a forecast, your location coordinates are sent to the backend to fetch the weather. That is the only data that leaves your device.
What is stored on your device
- Your temperature unit (F or C) and the cities you have saved, kept in your device's local storage so the app remembers your preferences.
- The most recent weather data, cached locally so the app can display your last-known conditions quickly.
- On iOS, the active city name is shared to an App Group so the home-screen widget can read it. This data never leaves your device.
None of this information is uploaded to a server or tied to any account or identity.
What is sent off your device, and why
- The place you ask about. To show a forecast, the app sends the latitude, longitude, and a city label to weather.tinytoolsstack.com. The backend uses these coordinates to fetch weather data and returns the forecast to your device. Location coordinates are used only for this purpose: to retrieve the weather. They are not logged, stored persistently, or used for any other purpose.
- Your current location, only when you ask. If you tap "Use my location," your device provides your coordinates, which are sent once to fetch the local forecast. The app never reads your location in the background and never without your explicit request.
Third-party services the data flows through
- Open-Meteo. The backend fetches forecast data from Open-Meteo (open-meteo.com), a public weather API. Your coordinates are passed to Open-Meteo to retrieve the forecast for your location.
- U.S. National Weather Service (NWS). For locations inside the United States, the backend may also request current conditions from the NWS to supplement the Open-Meteo forecast. This uses your coordinates only.
- DeepSeek. The backend sends weather data (temperature, conditions, and similar forecast fields) to DeepSeek's API to generate a short one-line weather headline. Your identity, precise location history, and any personal information are not included in this request.
- Cloudflare. The backend is served through Cloudflare, which processes network traffic as part of its infrastructure. Cloudflare's privacy policy governs its data handling.
All connections between the app and the backend use HTTPS.
What the app never does
- No accounts, no logins, no sign-up.
- No advertising, no sponsored content.
- No analytics SDKs or trackers inside the app.
- No tracking of your location over time or in the background.
- No selling or sharing of your personal information for cross-context behavioral advertising or any other commercial purpose.
We do not sell or share your personal information
Shinkai Sky does not sell your personal information. We do not share your personal information with third parties for cross-context behavioral advertising. The location coordinates sent to fetch the weather are used solely to return forecast data to you, as described above.
iOS permissions
- Location (when in use): only when you tap "Use my location," to fetch the forecast for your current position. Not used in the background.
- App Group (widget): the active city name is shared within an App Group on your device so the home-screen widget can display it. This stays on your device.
Chrome extension permissions
- Storage: remember your unit and saved cities.
- Alarms: refresh the toolbar temperature in the background.
- Location: only when you tap "Use my location," to fetch the weather there.
- Access to weather.tinytoolsstack.com: to load the widget and fetch forecasts. This is the only site the extension contacts.
Your rights and choices
Because Shinkai Sky stores preferences only on your device, you control your data directly:
- Clear the app's local storage or uninstall the app to remove all stored preferences and cached weather data.
- On iOS, revoke location permission at any time in Settings. The app continues to work with manually added cities.
- On Chrome, you can clear extension storage from your browser settings or remove the extension.
There is no account to delete because no account is ever created.
California residents (CCPA / CPRA)
If you are a California resident, you have rights under the California Consumer Privacy Act (CCPA) and the California Privacy Rights Act (CPRA), including the right to know what personal information is collected, the right to delete personal information, and the right to opt out of the sale or sharing of personal information. Shinkai Sky does not sell or share your personal information for cross-context behavioral advertising, so no opt-out mechanism is required. To exercise any other rights, contact us at the address below.
Children
Shinkai Sky is a general-audience weather tool and is not directed at children under 13. It collects no personal information from anyone.
Changes and contact
If this policy changes, the updated version will be posted at this URL. Questions or concerns: [email protected].
Last updated: June 27, 2026. Effective date: June 27, 2026. Shinkai Sky is an independent, no-account weather tool.