Share when you are free, without showing what you are doing.
Alto Calendar builds one Busy/Free calendar out of the calendars you already keep. It carries only the blocks: when you are busy, and when you are not. No titles, no locations, no guests, no notes.
Then you share that one calendar with your partner, your family or a friend, using Apple's own calendar sharing. They see when you are free. They never see what you were doing.
They can make one too, so you can both see when everyone is actually free.
- one Busy/Free calendar, built from any calendars you pick
- event details never leave your device: only the blocks are shared
- see today and tomorrow as a summary or a timeline, with everyone's blocks merged
- declined invitations and anything marked free are ignored, so you are not shown as busy when you are not
- all-day events are ignored by default, and you can turn that on
- refreshes in the background as your calendars change
- ask Siri “When is Sarah free?”, or check from Spotlight and Control Center
- invite from Contacts; the person you invite is shown how to share back
- no account, no sign-up, no server. Your calendars stay in iCloud, where they already are
Free to share with one person. Alto Calendar Pro, one purchase, shows everyone who shares with you and counts down on the Lock Screen.
Ratings & Reviews
5.0
out of 5
2 Ratings
Alto Calendar 3.2: a better countdown, 13 more languages.
- the Lock Screen countdown follows one person: it moves if their meeting runs over, says when they're free, and starts from their card, the timeline or Siri
- when two people's meetings overlap, each person's free time is now right in the widgets, Siri and Today
- 13 more languages, from Turkish to Czech
- three tip amounts in Settings
Version 3.2
The developer, System Operator LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
System Operator LLC
Size
10.8 MB
Category
Lifestyle
Compatibility
Requires iOS 18.0 or later.
iPhone Requires iOS 18.0 or later.
Mac Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.