Privacy policy
Horizon is built so that your information stays on your iPhone. There is no Horizon server and no Horizon account. We do not collect, receive, sell or share your data.
What Horizon reads
- Calendars and Reminders on your iPhone, and any calendar links you add, to build your timeline and add events and to-dos you approve.
- Text you share with it (highlighted messages or screenshots) to find plans you can add.
- Gmail, only if you connect an account, to find bills, flight and hotel bookings, and travel changes.
Gmail
Horizon asks Google for read-only access to Gmail (gmail.readonly). It uses that access only to search for messages that look like bills, bookings or travel changes, and to read those messages on your iPhone.
- Your Gmail is read directly by your iPhone from Google. It is never sent to Horizon’s developer or anyone else.
- Horizon keeps only what it pulls out (for example “Pay Atmos Energy — $84.20, due Oct 24” or a flight number and time), encrypted on your iPhone. It does not keep copies of your emails.
- Horizon never sends, deletes, moves or marks email as read.
- Nothing is added to your calendar or Reminders until you review and approve it.
- Your Google sign-in is stored in your iPhone’s Keychain. Disconnecting an account in Horizon signs it out at Google and removes what was found in it.
Horizon’s use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. Gmail data is not used for advertising, is not used to train AI models, and is not transferred to anyone.
Apple Intelligence
When Apple Intelligence is available, Horizon may use Apple’s on-device model to read a message or email. That processing happens on your iPhone.
Storage and deletion
Horizon’s data is encrypted on your iPhone with a key that never leaves it. Settings › Erase All Data in Horizon removes everything, including Gmail sign-ins. Deleting the app also removes it. You can also revoke Horizon’s Gmail access at any time at myaccount.google.com/permissions.
Analytics
Horizon has no analytics, advertising or tracking.
Changes
If this policy changes, the date at the top will change and the app will show the update.