# AddCal > AddCal turns any event into a link, button, embed or invite that lands in Google Calendar, Apple Calendar, Outlook and Office 365. Teams use it to publish subscription calendars that stay up to date, collect RSVPs, and embed live calendars on their own sites. Every page listed here is also available as markdown by appending `.md` to its URL, or by sending an `Accept: text/markdown` request header. ## Product - [Pricing](https://addcal.co/pricing.md): Plans, limits and pricing for every tier. - [Features](https://addcal.co/features.md): Everything AddCal does, in one place. - [About](https://addcal.co/about.md): What AddCal is and who builds it. - [Changelog](https://addcal.co/changelog.md): What shipped recently, newest first. - [Security](https://addcal.co/security.md): Security practices, compliance and how to report an issue. ## Solutions - [Add to Calendar links](https://addcal.co/solutions/add-to-calendar-links.md): Add to Calendar links that work in every calendar app. - [RSVP management](https://addcal.co/solutions/rsvp-management.md): Collect RSVPs with custom forms and track responses. - [Subscription calendars](https://addcal.co/solutions/subscription-calendars.md): Publish a calendar people subscribe to once and it stays current. - [Calendar embed](https://addcal.co/solutions/calendar-embed.md): Embed a live calendar or button on your own site. - [Calendar invites](https://addcal.co/solutions/calendar-invites.md): Send real calendar invites that capture replies. ## Integrations - [Integrations](https://addcal.co/integrations.md): Every tool AddCal connects to, with a setup guide for each. - [Smart links](https://addcal.co/automations/smart-links.md): Generate calendar links on the fly from URL parameters. - [n8n](https://addcal.co/automations/n8n.md): Drive AddCal from n8n workflows. - [Zapier](https://addcal.co/integrations/zapier.md): Create calendar events from 8,000+ apps and send RSVPs anywhere, no code. - [MCP server](https://addcal.co/integrations/mcp.md): Let Claude, ChatGPT or Cursor run your calendars through the AddCal MCP server. - [Mailchimp](https://addcal.co/integrations/mailchimp.md): Add-to-calendar buttons in Mailchimp campaigns, with no click caps. - [HubSpot](https://addcal.co/integrations/hubspot.md): Every RSVP becomes a HubSpot contact and a logged meeting. Workflows send the invites. - [Klaviyo](https://addcal.co/integrations/klaviyo.md): Calendar buttons in Klaviyo flows and campaigns, with per-profile dates. - [Zoom](https://addcal.co/integrations/zoom.md): Import Zoom meetings and webinars, then share one-click calendar links. - [Squarespace](https://addcal.co/integrations/squarespace.md): Add-to-calendar buttons and a live calendar on any Squarespace page. - [Excel](https://addcal.co/integrations/excel.md): Bulk import events from a spreadsheet, with columns mapped for you. - [ICS](https://addcal.co/integrations/ics.md): Import an .ics export from Google Calendar, Outlook or Apple Calendar, recurrence included. ## Documentation - [Documentation](https://addcal.co/documentation.md): Developer and product documentation index. - [API reference](https://addcal.co/documentation/api.md): REST API reference for events, calendars and RSVPs. - [Smart links reference](https://addcal.co/documentation/smart-links.md): Smart link parameters and behaviour. - [Dynamic links](https://addcal.co/documentation/dynamic-links.md): Build links whose contents come from the request. - [Embeds](https://addcal.co/documentation/embeds.md): Embed code and configuration options. - [Calendar button](https://addcal.co/documentation/calendar-button.md): Add the calendar button to any page. ## Comparisons - [AddCal vs AddEvent](https://addcal.co/alternatives/addevent.md): How AddCal compares to AddEvent. - [AddCal vs CalGet](https://addcal.co/alternatives/calget.md): How AddCal compares to CalGet. - [AddCal vs Trumba](https://addcal.co/alternatives/trumba.md): How AddCal compares to Trumba. - [AddCal vs CalendarLink](https://addcal.co/alternatives/calendarlink.md): How AddCal compares to CalendarLink. ## Legal - [Terms of service](https://addcal.co/terms-of-service.md): The terms covering use of AddCal. - [Privacy policy](https://addcal.co/privacy-policy.md): What data AddCal collects and how it is handled. - [Data processing agreement](https://addcal.co/dpa.md): The DPA offered to customers processing personal data. - [Subprocessors](https://addcal.co/subprocessors.md): The subprocessors AddCal uses. ## Blog - [ICS Not Working in New Outlook? Why, and the Fix](https://addcal.co/blog/ics-not-working-in-new-outlook.md): Double-click an .ics and new Outlook does nothing, or says it imported and shows no event. Half the time the import dialog is open on a tab you cannot see. The... - [6 add to calendar tools compared, with 2026 prices](https://addcal.co/blog/add-to-calendar-tools-compared.md): Six add to calendar tools side by side: free plans, entry prices, click caps and automation, checked on each vendor's pricing page on 1 October 2026, and what t... - [Add to Calendar Link Not Working on iPhone? Why, and the Fix](https://addcal.co/blog/add-to-calendar-link-not-working-on-iphone.md): Tap Add to Calendar on an iPhone from Facebook, Instagram or WhatsApp and nothing happens. The link is fine; the in-app browser cannot hand a file to Calendar.... - [ICS Timezone Wrong in Google Calendar: Why Events Shift, and the Fix](https://addcal.co/blog/ics-timezone-wrong-in-google-calendar.md): An imported .ics lands at the wrong time in Google Calendar for one of three reasons: a zone name Google does not know, a floating time read in your zone, or a... - [How to Share Your Scoir College Visit Calendar With Families](https://addcal.co/blog/share-scoir-college-visit-calendar-with-families.md): Scoir only syncs college visits to Google and Outlook, and only for the counselor who linked it. Here is how one college counseling team published every rep vis... - [What Is a Subscription Calendar and How Do You Subscribe to One?](https://addcal.co/blog/what-is-a-subscription-calendar.md): A subscription calendar is a calendar you follow by URL: its events land in your own app and keep themselves up to date. How it differs from a shared calendar,... - [Calndr.link Is Now AddCal: What Changed, What Still Works](https://addcal.co/blog/calndr-link-is-now-addcal.md): Calndr.link became AddCal in 2025. Every old link and API integration still works. Here is where Calndr.link came from, what changed in the rebuild, and what to... - [How to Accept a Google Calendar Invite](https://addcal.co/blog/how-to-accept-a-google-calendar-invite.md): Every way to RSVP to a Google Calendar invite, from Gmail, the web and mobile, plus adding a note, proposing a new time, changing your answer, and finding invit... - [How to Send a Calendar Invite on iPhone](https://addcal.co/blog/how-to-send-a-calendar-invite-on-iphone.md): How to add invitees to an event in Apple Calendar on iOS, which accounts actually support invitations, why the Invitees row goes missing, and how to share an ev... - [How to Send a Calendar Invite in Outlook](https://addcal.co/blog/how-to-send-a-calendar-invite-in-outlook.md): The real click paths for new Outlook, classic desktop Outlook and Outlook on the web, plus Meeting versus Appointment, Scheduling Assistant, response options, a... - [How to Send a Calendar Invite in Gmail](https://addcal.co/blog/how-to-send-a-calendar-invite-in-gmail.md): Three ways to send a calendar invite from Gmail, what guest permissions really do, what recipients see on Gmail versus Outlook, and how to fix invites that land... - [How to Send a Calendar Invite (Any Calendar App)](https://addcal.co/blog/how-to-send-a-calendar-invite.md): What a calendar invite actually is under the hood, how to send one properly in Google Calendar, Outlook, Apple Calendar and Gmail, the etiquette that gets peopl... - [What Is webcal? Subscription Calendar URLs Explained](https://addcal.co/blog/what-is-webcal-subscription-calendar-urls.md): The webcal scheme tells a device to subscribe to a calendar rather than download it. It is not a protocol and it was never standardised, but it is universally s... - [ICS vs iCal vs webcal: What's the Difference?](https://addcal.co/blog/ics-vs-ical-vs-webcal-explained.md): One is a file format, one is a defunct Apple app name that stuck, and one is a URL scheme. They get used interchangeably and they are not the same thing. Here i... - [How to Add an ICS File to Outlook](https://addcal.co/blog/how-to-add-an-ics-file-to-outlook.md): Outlook is four different products, and each handles ICS files differently. Classic Outlook alone offers three import options with three different outcomes. Her...