1. Google Calendar
The best part about Google Calendar is that you can create multiple calendars in one app with your Gmail or Google account.
2. Apple Calendar
It is the most preferred app for Apple product users on Mac or iOS. Apple Calendar is the default calendar app on all Apple devices.
Microsoft Outlook Calendar schedules functionality for Outlook users to integrate their emails and other Outlook event features.
If you want a calendar app that can run on multiple applications, then 24me will be the best for you.
Fantastical is a great app by Flexibits. If you want the best-paid calendar app for iOS and Mac, this app will satisfy all your needs.
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