OneCal - The Best
Cronofy alternative
for Calendar API
OneCal's Unified Calendar API is the top Cronofy alternative because it syncs calendars reliably, works with iCloud, Outlook, and Google Calendar, offers great support, and is affordable.
Cronofy Alternative
What does OneCal Unified Calendar API offer as a Cronofy alternative?
Out-of-the-box support for Outlook, Google Calendar and iCloud Calendar
Our Unified Calendar API allows you to integrate Google Calendar, Outlook, and iCloud Calendar using a single API integration. No need to implement each calendar provider separately, learn the API, and deal with provider-specific issues.

Thoroughly tested on the OneCal Calendar Platform.
At OneCal, we have a suite of calendar products: Calendar Sync, Calendar View, and Scheduling Links. All three products use our Unified Scheduling API. Our Calendar Sync product has synced over 1 billion events across Google Calendar, Outlook, and iCloud Calendar with outstanding reliability.

Webhook notifications
Registering and managing webhooks across different calendar providers is challenging. iCloud, for example, doesn't notify you when there are changes to a calendar (i.e, there is no support for webhooks). The OneCal Unified Calendar API allows you to register your webhooks and get notified when changes happen to calendars, regardless of the calendar provider. You get to use the same webhook notification for all providers.

Pricing that makes sense
Unified Calendar APIs are extremely expensive and sometimes unaffordable. At OneCal, we'll make sure our pricing structure makes sense and scales along with your product.

Not just for scheduling
Although scheduling is the most common use of a unified calendar API, our API is generic and can be used with any product that interacts with calendars, be it a calendar client, a task app, etc.

Switch to OneCal Unified Calendar API
Stop spending time on custom implementation and maintenance for each calendar provider and focus on what's most important for your product.