OneCal - The Best
Aurinko alternative
for Calendar API
OneCal's support for iCloud Calendar, Google Calendar, and Outlook, combined with push notifications support and affordable pricing, positions it as the top Aurinko alternative for calendar API.
Aurinko Alternative
What does OneCal Unified Calendar API offer as a Aurinko alternative?
One API for iCloud Calendar, Outlook, and Google Calendar
Using OneCal Unified Calendar API, you don't need to implement the specific Outlook or Google Calendar API, or even worse, deal with iCloud's CalDAV API , which has no documentation and many things don't work as per the CalDAV specification.

Used in production by thousands of users
The OneCal Unified Calendar API is a product of OneCal, a calendar app that offers seamless calendar synchronization across all calendar providers, Scheduling Links, and Calendar View. We synchronize millions of events every month, and our scheduling links are used daily by thousands of professionals. We know the pain points of implementing different calendar providers into an application, and we've built the OneCal Unified Calendar API to make it easier for you to implement all calendars into your app, without spending time on platform-specific issues.

Suppport for Push Notifications
We support push notifications out of the box for iCloud Calendar, Google Calendar, and Outlook. You don't need to worry about implementing your own solution for iCloud Calendar or implementing each provider individually. Using our Unified Calendar API, you can register for webhooks and be notified when changes occur to calendars.

Affordable Pricing
We're launching our Unified Calendar API product soon, and the pricing is not decided yet, but we've gathered enough feedback from our users to understand that the market needs an affordable Unified Calendar API product that makes sense for startups that are getting started, as well as established companies with millions of users.

APIs that you can build everything on top
The OneCal Unified Calendar API provides all the APIs you'll need to interact with a calendar provider, not specific to certain types of applications, like scheduling. Using our Unified Calendar API, you can build a Calendar App, Notes App, Scheduler, or whatever your use case might be.

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.