Here’s how:

DownloadSync2and trigger the setup file.

Although Sync2 is a premium paid app, a free trial is available.

pick the free trial or paid version on the setup wizard and selectNext.

Screenshot of Sync2

ChooseMicrosoft Outlook Calendarand selectNext.

SelectLogin to Googleand put in your Google account information to sign in.

Allow the connection if prompted and selectNext.

Screenshot of Sync2 setup wizard

SelectNextand chooseFinishto apply the parameters.

Wait while setup completes.

Enter the email address associated with your Google account, selectNext, then key in your password.

Screenshot of What do you want to sync page

If you use 2-Step Verification, enter an app password instead of your regular password.

kick off the Calendar app on your iPhone to see your Google and Outlook Calendar events.

Screenshot of Login to Google Account page

Screenshots of Passwords & Accounts, Add Account and account choices