Privacy policy

Horizon organizes your Apple Calendar on your own devices. There is no Horizon server, no account and no tracking, and your calendar is never sent to us. Two things do leave your device, both to Apple: iCloud Sync, if you keep it on, and requests for weather and maps.

With your permission, Horizon reads your events through Apple's EventKit framework: titles, dates and times, locations, notes, attendees and calendar details such as the calendar's name and account. It uses them to categorize events and to power the dashboard, briefings, Life Patterns, Find Free Time, the Watchlist, widgets, Siri and the Apple Watch app.

Horizon changes your calendar only when you ask it to: creating, editing or deleting an event. You can turn calendar access off at any time in Settings › Privacy & Security › Calendars.

Categorizing, duplicate detection, briefings and every other feature run on your iPhone or iPad. Horizon keeps a copy of your events in its own storage on the device so it works quickly and offline. On devices with Apple Intelligence, Horizon may ask Apple's on-device model to suggest a category; that also stays on the device.

The Apple Watch app receives today's events, your briefing and your Watchlist from your iPhone over Apple's watch connection. Widgets, Siri, Shortcuts and Spotlight use the same on-device data. Spotlight indexes your categories and Watchlist countdowns, never individual events, and you can turn it off in Settings › Siri & Search.

iCloud Sync is on by default. It keeps your Horizon setup the same on all your devices by storing it in your private iCloud account, using Apple's CloudKit. What syncs:

• Your categories, their colors, icons, keywords and reminder settings
• Corrections you make, which include the title of each event you recategorized
• Your Watchlist, which includes each watched event's title and time
• Your Horizon settings

Your events themselves are not copied to iCloud by Horizon; they sync through Apple Calendar as they always have. Horizon cannot see your iCloud data, and Apple protects it under its own privacy policy. Turn iCloud Sync off in Horizon's Settings › iCloud & Sync.

To show weather, Horizon asks Apple's WeatherKit for the forecast at your location or at an event's address. To show an event on a map, it asks Apple Maps to look up the address. These requests go to Apple, not to us, and are covered by Apple's privacy policy. Location access is optional; Horizon works without it.

Reminders, briefings and Live Activities are scheduled on your device. Horizon runs no push server; iCloud Sync uses Apple's push service to learn when your synced data changed.

Horizon contains no analytics, advertising, tracking or crash-reporting frameworks, and no third-party code at all. It doesn't know how you use the app or how often you open it, and it shares nothing with advertisers or data brokers. If you choose to share analytics with app developers in iOS Settings, Apple may send us anonymous crash reports.

• Turn calendar, location or notification access off in iOS Settings
• Turn iCloud Sync off in Horizon's Settings › iCloud & Sync
• Turn Spotlight indexing off in Horizon's Settings › Siri & Search
• Delete the app to remove everything Horizon stored on the device. Data synced to iCloud can be removed in iOS Settings › your name › iCloud › Manage Account Storage.

Horizon collects no personal information from anyone, including children under 13.

If this policy changes, the new version will appear here with a new date.

Questions about privacy? Email support@horizoncalendar.io.