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Subscribe to an ICS calendar

Follow an ICS calendar URL in Harmonise with automatic updates and read-only Events.

Before you begin

  • An HTTPS ICS calendar URL

Subscribe to an ICS calendar when you want to follow another calendar in Harmonise without connecting its calendar account.

Harmonise will check the calendar for updates automatically and show its events alongside your other plans.

Subscribed calendars are read-only. You can view their events in Harmonise, but you cannot create, edit, or delete events on the original calendar.

Before you begin

You will need the calendar’s ICS subscription URL.

This is usually provided by the service or organisation that owns the calendar. The URL should begin with HTTPS and may look similar to:

https://example.com/calendar.ics

Some calendar subscription links are private. Anyone with the complete link may be able to view the calendar, so avoid sharing it in messages, screenshots, or support requests.

Add a subscription on mobile

  1. Open Settings.
  2. Select Calendars.
  3. Find Subscribed calendars.
  4. Select Add subscription.
  5. Enter the Calendar URL.
  6. Give the calendar a Name.
  7. Choose a Color.
  8. Select Save.

Harmonise will check the calendar and begin loading its events.

The subscription may briefly show Connecting before becoming Active.

Harmonise may also provide recommended public calendars that you can add without finding an ICS link yourself.

These can include calendars such as public holidays or other useful public schedules.

On mobile

  1. Open Settings > Calendars.
  2. Find Recommended calendars.
  3. Select Browse calendars.
  4. Search or filter the available calendars.
  5. Open Details for a calendar.
  6. Select Add or Subscribe.

You may be able to filter calendars by:

  • Country
  • Region
  • Language
  • Category

Manage a subscribed calendar

Your subscriptions are managed separately from calendars connected through Google, Outlook, Apple, Yahoo, or CalDAV.

Open Subscribed calendars in Settings to manage them.

From here, you can:

  • Check the subscription status
  • Refresh the calendar
  • Pause or resume automatic updates
  • Change its displayed name or color
  • Prioritize a subscription
  • Delete the subscription

Subscription statuses

You may see one of the following statuses:

Status What it means
Connecting Harmonise is checking the calendar and loading its events.
Active The subscription is working normally.
Updates paused Automatic updates have been turned off. Existing events remain available.
Paused by plan Your current plan does not have an available active subscription slot.
Needs attention Harmonise cannot currently update the calendar and may need you to check the subscription.
Removed The subscription has been deleted.

Pause automatic updates

Turn off Automatic updates if you want to temporarily stop Harmonise from checking the calendar.

Pausing updates does not remove the calendar or its existing events.

You can turn automatic updates back on later.

Refresh a subscription

Select Refresh if you want Harmonise to check the calendar for new updates.

You can also use Check status to see the latest state of the subscription.

After a recent refresh, Harmonise may temporarily prevent another refresh. If this happens, wait until the option becomes available again.

You do not need to repeatedly refresh a subscription. Active subscriptions are checked automatically.

Change the name or color

Select Edit for the subscription if you want to change how the calendar appears in Harmonise.

You can change its:

  • Name
  • Color

These changes only affect how the calendar appears in Harmonise. They do not change the original calendar.

Change the calendar URL

A subscription’s Calendar URL cannot be changed after the subscription has been created.

If you need to use a different URL:

  1. Wait for any current refresh to finish.
  2. Delete the existing subscription.
  3. Add a new subscription using the new URL.

Delete a subscription

Select Delete if you no longer want the subscribed calendar in Harmonise.

Deleting the subscription removes the subscribed calendar and its events from Harmonise.

It does not delete or change the original calendar.

Subscription limits

The number of subscriptions you can keep active depends on your Harmonise plan.

Currently:

  • Free supports up to 2 active ICS subscriptions, with updates approximately every 12 hours.
  • Pro supports up to 100 active ICS subscriptions, with updates approximately every 3 hours.
  • Business supports up to 100 active ICS subscriptions, with updates approximately every 3 hours.

Limits for connected Google, Outlook, Apple, Yahoo, and CalDAV accounts are separate from ICS subscription limits.

The plan information shown in Harmonise is the most up-to-date source for your account.

If you change to a plan with fewer available subscriptions, Harmonise does not immediately delete your existing subscriptions.

Subscriptions above your new limit may instead show Paused by plan until an active slot becomes available.

If a subscription stops updating

First, check the status shown under Subscribed calendars.

If the subscription shows Needs attention:

  1. Check whether the original calendar is still available.
  2. Check whether the provider has changed the subscription URL.
  3. Select Check status or Refresh when available.

If the calendar provider has given you a new URL, delete the existing subscription and add it again using the new URL.

If the provider is temporarily unavailable, you can usually leave the subscription in place and try again later.

Avoid deleting and recreating a subscription while a refresh is still in progress.

Some ICS subscription URLs contain information that gives direct access to a private calendar.

Do not share:

  • Your complete private calendar URL
  • Calendar credentials
  • Screenshots that expose the full URL

If you need help troubleshooting, you can share the subscription status and the name of the calendar provider without sharing the complete URL.