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Time is money; your calendar is your budget. That's why it's important for your business to have the best calendar app possible. Here are our picks for the 5 best.

The 5 best calendar apps in 2025 | Zapier

Time is money; your calendar is your budget. That's why it's important for your business to have the best calendar app possible.

The 5 best calendar apps in 2025

Some people prefer to use Google Calendar, but others like to have their email, contacts and calendar in Microsoft Outlook. If you're reading this, you probably use both, and need a way to keep them on the same page. Use this Zapier automation to add detailed events in Google Calendar whenever new events are created in Microsoft Outlook.

Add Microsoft Outlook events to Google Calendar

Stop flipping between Google Calendar and Microsoft Outlook. See all of your scheduled appointments at a glance with this Zapier integration. Every time you create a new event in Google Calendar, Zapier automatically adds the event in Microsoft Outlook.

Add Microsoft Outlook events from new Google Calendar events

After someone fills out a form on your site, you might want to get an email alert or send a follow-up email to the individual who completed the form. This Zapier automation lets you do either of those things, without breaking a sweat. Automatically send a customizable email—to a recipient you specify—whenever a new Typeform entry is submitted.

Typeform

Send Microsoft Outlook emails for new Typeform entries

Do you use Google Calendar to schedule events and wish you could turn them into Trello cards? Zapier will automatically create a new card for every new Google Calendar event you create.

Trello

Create new Trello cards from new Google Calendar events

Multiple calendars are helpful to compartmentalize your events, but who has time to manage them manually? That's where Zapier comes in. This Google Calendar integration will trigger with each new event you add, automatically copying it to the calendar you specify to save you the hassle of doing it yourself. Get a step-by-step walkthrough in our 

Copy new Google Calendar events to another Google Calendar

Do you need a task to correspond with your new Google Calendar events? This Google Calendar Any.do integration makes it easy to automatically create a new task for each new Google Calendar event.

Any.do Personal

Add new Google Calendar events to Any.do as tasks

Get a direct message to Slack when a person schedules your Calendar Timeslot.

Slack

Send direct messages in Slack when new meetings are scheduled in Calendar

You've had a long week of meetings and it's time to report to your team about it! You could go back and try to remember them all, or you could let Zapier do all of that work for you. Once an event is scheduled with Calendar.com, a new row in a Google Sheets spreadsheet will be automatically created to easily store those details.

Google Sheets

Create Google Sheets rows from new scheduled Calendar events

Want to inform contacts via your WhatsApp number when a new meeting is scheduled in Calendar? Now with the help of ChatDaddy and Zapier, you can do this automatically. Whenever a new meeting is scheduled in Calendar, this integration will send a message to the contact in ChatDaddy via your WhatsApp number.

ChatDaddy

Send messages in ChatDaddy for newly scheduled Calendar meetings

Stay on top of your schedule with this handy tool. When an appointment is requested in Fantastical, this setup sends a direct message in Slack. This not only streamlines your process but also ensures that no appointment slips through unnoticed, enhancing overall team communication and productivity. Efficient and reliable, this is an ideal solution for those looking to seamlessly integrate their scheduling and messaging applications.

"trigger direct messages in Slack when new appointments are requested in Fantastical"

With this workflow, as soon as you confirm an appointment in Fantastical, an email is promptly dispatched via Gmail. It eliminates the need for manual updates and keeps everyone in the loop instantly. Ideal for busy professionals, this automation will save time and avoid communication delays in updating your contacts.

Gmail

"confirm appointments in Fantastical and send emails in Gmail"

When a proposal is confirmed in Fantastical, keep your team in the loop by sending a direct message in Slack. This workflow makes sure everyone is updated promptly, ensuring seamless communication and faster decision-making processes. Enjoy the convenience of instant updates with this efficient and time-saving automation.

The 5 best calendar apps in 2025

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