Update once.
Everyone's calendar updates.
Share one subscribe link and every subscriber's Google, Apple, or Outlook calendar stays in sync. Add or change an event and it updates everywhere on its own, no re-sending links, no chasing people.
Acme Events
Los AngelesSubscribe once and every event lands on your calendar. When plans change, your calendar updates on its own.
Subscribe to calendar
Google
Apple
Outlook
Office 365
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OtherPick your calendar app, you are subscribed in seconds. No account or download required.
Three steps to a self-updating calendar
Create your calendar
Add your events, one-off or recurring, online or in person. Every calendar gets a subscribe link automatically.
Share your subscribe link
Drop it in an email, a website button, or a social post. One link works with every calendar app.
Update once, sync everywhere
Change or add an event and every subscriber's calendar updates on its own. No re-sending, no reminders.
Subscribe once. It keeps itself current.
On the left is the real subscribe page your audience sees. On the right is their calendar app. When you change an event, their calendar follows, calendar apps refresh subscribed feeds periodically, usually within a day.
Acme Events
12 upcoming events
Subscribe once and every event lands on your calendar. When plans change, your calendar updates on its own.
One feed. Every subscriber in sync.
From automatic updates to subscriber exports, one tool handles it. The two that make subscription calendars worth it sit right up front.
Automatic updates
Add or change an event and every subscriber's calendar updates on its own. No re-sending links, no "check the website" reminders.
Every calendar app
One subscribe link works with Google, Apple, Outlook, Office 365 and Yahoo. Your audience picks their favorite, it just works.
Subscriber management
Collect names and emails when people subscribe, see who is following, and export the list anytime.
Data collection
Keep it anonymous or capture names, emails, and custom fields. You decide how much info you need.
One-click export
Download your full subscriber list as a spreadsheet, ready for your CRM, email tool, or marketing platform.
Custom branding
Match your calendar page with your colors, logo, favicon, and short links. Custom domains on Business.
Private schedules, for paying members only.
Running a course or a paid membership? Give each member a private link to your schedule, set it to expire, and cut off access the moment someone leaves.
Access-protected calendars
Lock a calendar behind an access code so only the people you invite can open the subscribe page. Perfect for paid courses and members-only schedules.
Expiring invite links
Share a signed invite link to the subscribe page that stays valid from a day to a year, without ever exposing your access code.
Block any subscriber
This is how you cut off access. Block a subscriber and their feed empties on the next sync, so a cancelled or refunded member stops seeing your events.
You stay in control
See everyone subscribed, with names, emails, and custom fields, and revoke any of them whenever you need to.
Automate it from your own stack.
Create events and mint signed, expiring share links over a simple REST API. Perfect for course platforms and membership sites that provision access automatically.
Create calendars & events
Add events to a subscription calendar programmatically. Every subscriber picks up the change automatically.
Generate signed invite links
Mint time-limited links to a protected calendar from your backend, ideal for inviting a new member or student to subscribe.
Built for automation
Wire it into your course platform, CRM, or membership tool so schedules stay in sync without manual work.
curl -X POST https://addcal.co/api/calendars/{calendar}/events \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"title": "Week 3 - Live Q&A",
"start": "2026-06-12T11:00:00",
"end": "2026-06-12T12:00:00",
"timezone": "America/Los_Angeles"
}'The alternatives all break the moment plans change.
Re-sending links is manual and easy to forget. A static .ics file never updates. A shared Google Calendar only works for Google users. A subscription feed updates everyone, everywhere, on its own.
AddCal links
.ics
GCal
Works with every major calendar
Your audience uses whatever they already have. No accounts, no apps to install.
Google CalendarApple CalendarOutlookOffice 365Yahoo CalendarAny .ics app
Subscription calendars, answered
Loved by the people who run events.
“Our attendance rate for funnel events was about 35%. We replaced our confirmation page and emails with AddCal links and we're above 60% now.”
“Parents kept missing school events because nobody checks the website. We switched our calendar to AddCal, now it's a public page they subscribe to. Game changer.”
“We do a weekly tech webinar and used to have a whole separate tool just for RSVPs. AddCal handles that plus the calendar link so it's one less thing to maintain.”
One calendar to keep.
Everyone else stays in sync.
Create your subscription calendar in under a minute.
Update once, every subscriber's calendar follows.