The universal calendar app
Every calendar. One place.
Bring Google Calendar, Outlook, Exchange, CalDAV and iCal together. See your entire schedule and manage supported calendars without changing email providers.
Works across providers
Keep every account where it is. 0cal brings the schedules together.
01 / Why 0cal
Your schedule shouldn't depend on one provider.
Work, personal, client, and shared calendars rarely live in one ecosystem. 0cal gives them one clear timeline.
See everything
One timeline across every account you use.
Keep your setup
No mailbox or domain migration required.
Manage the day
Edit events in supported writable calendars.
02 / Inside 0cal
A real workspace, not another calendar feed.
See the complete week, understand every source, share real availability, and keep the same clarity on mobile.
One working calendar with provider colours, ownership, and read-only state kept clear.
Accounts from different providers remain distinct and easy to manage.
Availability checks the sources you choose before a visitor sees a time.
Wednesday, April 15
A compact agenda keeps account context without squeezing a desktop grid into a phone.
Explore multiple calendars →03 / How it works
From five calendar accounts to one calm schedule.
- 01
Connect your calendars
Add the providers and accounts you already use.
- 02
See one schedule
Keep source colours and view every event together.
- 03
Work from 0cal
Create and update events in writable calendars.
04 / Integrations
Your calendar stack, connected.
05 / Beyond the calendar
The rest of your scheduling workflow, together.
Booking pages
Share available times while checking conflicts across selected sources.
Explore booking pages →Meeting links
Create or detect Zoom, Google Meet, Kontur Talk, Microsoft Teams, Webex, and Jitsi links.
Telegram reminders
Receive daily agendas and filtered reminders in the place you already read.
06 / FAQ
Questions, answered.
Can I connect calendars from different email providers?
Yes. 0cal is designed to show calendars from Google, Outlook, Exchange, CalDAV, and iCal in one schedule.
Does 0cal support CalDAV?
Yes. Connect a CalDAV account with its server URL, username, and password or app password.
Can I add an iCal or ICS calendar?
Yes. iCal and ICS subscriptions can appear alongside your other calendars. iCal/ICS subscriptions are read-only in 0cal.
Can I edit events from every connected calendar?
You can create and manage events in supported writable Google, Outlook, Exchange, and CalDAV calendars. Read-only sources are clearly marked.
Does 0cal work with Outlook and Exchange?
Yes. 0cal supports Microsoft 365 calendars through Microsoft Graph and Exchange On-Prem through EWS.
Is 0cal free?
Yes. 0cal is currently free to use and does not require a credit card.
Free to use