tandem.

Two calendars.
One smooth flow.

Apple Calendar meets Google Calendar.
Keep your plans together, wherever you change them.

Set up Tandem How it works

Apple Calendar

ThursdaySeptember 24
09:0010:0011:00
Coffee with Sam09:30 – 10:00

Google Calendar

ThursdaySeptember 24
09:0010:0011:00
Coffee with Sam09:30 – 10:00
Interactive preview · example events

Try an edit. Watch both calendars follow.

Less back-and-forth.
More room for life.

Keep the calendars you love. Tandem connects them behind the scenes, so you can get on with your day.

Explore the setup guide
  1. 1

    Connect your accounts

    Sign in with Apple, connect iCloud with an app-specific password, then authorize Google Calendar.

  2. 2

    Choose a calendar pair

    Pick one calendar from each account. You decide which parts of your day belong together.

  3. 3

    Make plans in either one

    New events, edits, and deletions flow both ways. Pause a pair whenever you need to.

Close to real time. Google sends change notifications; iCloud is checked every minute. Actual timing depends on your providers and calendar size.