Updated October 10, 2026. This page describes the native MintSky app by Below Zero Productions. The website has a separate website privacy policy.

To obtain station observations, forecasts, and history, the app sends your station or device identifiers and personal access token to WeatherFlow over HTTPS. WeatherFlow also receives normal connection information, such as your IP address. Its own privacy policies and retention practices apply to those requests. When you opt in to lightning notifications, MintSky also sends your station ID, personal access token, notification device token, selected alert distance, and a random installation identifier to the Belowz lightning service over HTTPS. The service verifies that the token grants access to your own station. Your station token is encrypted at rest in protected server storage. This optional subscription lets alerts work while the app is closed.

The app includes no advertising, analytics SDK, or tracking SDK. The optional lightning service stores subscription information solely to check your station for lightning and deliver notifications through Apple Push Notification service. Apple receives a device notification token and notification content. The service does not use this information for advertising or tracking. Apple may handle App Store purchases and platform diagnostics under its own settings and policies.

Disable lightning alerts in MintSky settings to remove your server subscription and stored station token. Simply uninstalling the app does not send a deletion request; revoke the personal token through Tempest if you uninstall before disabling alerts. Server records may be removed when Apple reports that a notification token is invalid. You can also revoke your token through Tempest Data Authorizations, or replace it in app Settings. Removing an app may leave Keychain items on the device; revoke the token to prevent further use. Sample weather lets you explore without providing credentials.

For privacy questions, contact Below Zero Productions through belowz.com. Do not include your access token.

The app stores your personal access token in Apple Keychain and station settings and cached weather in local device storage. It shares station setup and readings with your paired Apple Watch using Apple WatchConnectivity. Widgets read shared local settings and cached weather. The app does not request GPS location or create a Below Zero account.

Tempest and WeatherFlow are trademarks of WeatherFlow-Tempest, Inc. MintSky is an independent app by Below Zero Productions and is not affiliated with or endorsed by WeatherFlow-Tempest, Inc.