Calendar Sync, Simplified

The most advancedCalendar Sync Software

OneCal is the most advanced Calendar Sync software in the market. Sync multiple Google or Outlook calendars in real time, reflect your availability and keep your personal life private.

Start for freeNo credit card required

Privacy Focused

Configure exactly what you want to sync

You don't have to worry about other team members seeing your private event details. OneCal provides all the necessary tools to easily configure exactly what you want to sync over. No more, no less.

Sync Event titles
Include original event titles to clones or choose to completely hide them and show a custom message.
Sync Event description
Include description from the original events.
Sync Event participants
Include participants from the original events. Participants will be included in the event's description to prevent them from getting an invitation for the cloned event.
Sync Event location
Include physical location from original events.
Sync Event conference data
Include conference meeting links from the original events.
Mark cloned events as private
Cloned events will be marked as private to other people in your org.
Disable reminders for clones
Disable reminder notifications for clone events, so you don't get multiple notifications for the same event across multiple calendars.
Tag your clones
Will be appended to clone event titles to help you distinguish them from original events. If you choose to hide the event names, This will appear as the title of your cloned events.
Asign colors to cloned events
Choose to give cloned events a custom color so you can easily distinguish them from real events in your calendar.
Exclude events from syncing by your response (RSVP): Going, Maybe, Unanswered, No
Only events containing one of the selected responses will be synchronized.
Exclude events from syncing by their color
Events colored with the selected color won't be synchronised.

Real time Calendar sync

After connecting your Calendars, you can create as many synchronizations as you like. OneCal will keep your calendars in sync, automatically, in real-time. Set up and forget.

Privacy focused

OneCal offers a calendar synchronization configuration entirely focused on your privacy. It's up to you to decide how events show up in your calendars. Don't want to carry over the event titles? Cool, you can show as little or as much as information you like.

You can choose to sync:

Event titles
Event description
Event participants
Event location
Event conference data


OneCal equips you with as much flexibility as possible. In order to keep your scheduling flexible, we've added options to synchronize the meetings based on your response. Don't want to synchronize meetings you haven't responded to yet? All good!

You can:

Mark cloned events as private
Assign custom colors to cloned events
Disable reminder notifications for clone events

Exclude events from syncing

OneCal offers you the option to exclude certain events from synchronizing, based on their colors. Don't want that Job Interview to be copied over to your Work calendar? You can exclude it by marking it with a certain color.

Exclude events from syncing by:

Response (RSVP): Going, Maybe, Unanswered, No

Calendar Sync, Simplified

Seemlesly manage multiple calendars

We don't ask that you change how you work. We only aim to make it simpler. OneCal provides all the tools to make working with multiple calendars a breeze.

Real-Time Updates

Your calendars are automatically updated in real-time as the original events change or new events are added.

Multi-Way Syncs

Choose from one-way or multi-way syncs between 2 or more calendars. Set up once and forget.

Team Plans

We offer team plans for your whole organisation to start using OneCal and sync their calendars.

Fully Configurable

OneCal provides all the necessary tools to easily configure exactly what you want to sync over. No more, no less.

Privacy Focused

We only store the data we absolutely need to perform the sync. No data about your events is stored in our systems.

Simple Interface

No need for extensive doc pages. Everything is clearly explained and good defaults are provided out of the box.

Frequently asked questions

Ready to sync your Calendars?

Reflecting your availability across multiple calendars is tedious and time-consuming. OneCal was created with a mission to give peace of mind to calendar users.