Integrate your software with the Apple iCloud Calendar API

Integrate with Apple Calendar without using CalDAV

Read the documentation


99.5% uptime SLA


First-class security


Fully documented API


Real-time synchronization


Work in a language you're familiar with


Scalable for as many users as you need


Work with one API, build features that work with all major calendar services


Avoid dealing with frustrating CalDAV/Apple Calendar API

Real-time calendar sync for your software

  • Connect to Apple Calendar without using CalDav, which can be a challenge for developers used to more commonly styled HTTP APIs
  • Sync to the calendars of millions of iPhone users
  • Avoid conflict deadlocks and infinite update loops
  • Changes to calendar events are idempotent
  • Cronofy differentiates between events sourced from your application (‘Managed’) and events already in the user’s calendars (‘Unmanaged’) to ensure that you have reliable integration from the start
Video thumbnail

Streamline your development time

Try the API for free

Cronofy lets us focus on our core by saving us time and keeping a tricky domain at arm’s length. It’s well engineered and exceptionally well supported.

Ross McNairn
Head of Corporate Travel, Skyscanner -

Explore our customer stories

Customizable UI Elements

  • Use our customizable UI Elements in any combination you want
  • Users can connect and disconnect calendars, set working hours, book appointments, and more
  • Ideal for interview scheduling, meeting organization, hospital appointment scheduling, and more
  • Alter the design to match your branding
  • Reduce your development time even more – you could be up and running in days

Connect to the calendars of entire organizations

  • Connect to any – or all – the calendars on a company domain at the same time with Enterprise Connect
  • Increase the security of your connection by creating one entry point per company, not per user
  • Authorize connectivity individually, by group, or by organization
  • Meetings can be organized based on the simultaneous availability of attendees, meeting rooms, and resources
  • Create virtual calendars for things that require scheduling but don’t need a calendar
Video thumbnail
Make your first API call in minutes

Try our full range of products for free with up to 20 users – create your free developer account today.

Start syncing calendars

First-class security

  • Option to access users’ free/busy information
  • Host your data in the US or EU
  • GDPR and HIPAA compliant
  • No ongoing maintenance required
  • Built with security and privacy in mind

Experiment for free for as long as you need

  • Create your free developer account to try our API for free
  • Experiment with the full variety of features
  • Connect up to 20 accounts
  • Only pay when you’re ready to go live

Make your first API call

Create your free developer account to get your API key and get started in minutes.