We all have so much to organize in both our work lives and our personal lives. And while paper calendars can be useful, it’s impractical to carry them everywhere we go. So in 2021, it’s essential that we all use at least one of the calendar apps.

But with so many on the market, how do you choose? To help you out, we’ve tested dozens of calendar apps on a range of devices and platforms. In this article, we’ve explained the 12 best calendar apps in 2021, that we truly think are truly best in class & functionality.

While they all take different approaches and offer different features, all the apps on this list are easy to use, stable, and robust. Plus, each of them offers a few standout features that distinguish them from the rest of the pack.

Table of Contents

Best Cross-Platform Calendar Apps
Best Calendar Apps for iOS & Mac
Best Calendar Apps for Windows
Best Mobile-ONLY Calendar Apps

Best Calendar Apps for Windows 10. 7 Dec 2016 42 While the native Windows 10 calendar does a good job of things, but some may want a little more horsepower with their calendar app. The most stalwart of calendar apps, Microsoft Outlook Calendar is more of a personal information manager than a place to see your next appointment. The desktop app unifies your calendar, email, notes, tasks, and contacts into one view. Outlook's mobile apps aren't quite so ambitious, but they do at least combine your calendar and email. Fantastical comfortably tops the list with the best user interface for any calendar app for the Mac. The animations are smooth, and the whole experience is quick, fluid, and responsive. My favorite function about Fantastical is the ability to create an event from the ‘+’ menu quickly. This calendar app for iPhone is the winner of the “App Store Best of 2015” award by Apple. Each individual’s schedule is on one calendar. TimeTree keeps a family and a group organized. It helps manage busy lives while sharing the calendar, tasks, notes and more. The free calendar app beloved by over 20 million users.

Best Calendar Apps of 2021 for Windows, Mac, iOS & Android

Check out our list of the best calendar apps below, and find out which ones are best suited to your personal needs.

Best Cross-Platform Calendar Apps

1. Google Calendar

The best calendar app for GSuite users & in-general use

Google Calendar is free, easy to use, and allows you to plan your life, seamlessly, across all your devices.

Most suitable for: Anyone using G Suite for Business, or using Google apps regularly.

Pricing: Free

Platforms: iOS, Mac OS, Android OS, web browser

Key features

Easy to set up and use: Google Calendar is very simple to set up and use, and lets you access your calendars on all of your devices easily and quickly; especially if they’re already logged into Google.

Browse Calendars of Interest: Google Calendar includes prepared lists of dates, such as sporting events and religious holidays, to drag and drop to your calendar at will.

Add events from Gmail: With Google Calendar, whenever you receive event invitations via Gmail, they’re added to your calendar automatically. Here’s how they’ll look in your Google Calendar:

Integration with other apps: Millions of apps or websites are already integrated with Google Calendar. So whether you’re using a To-Do list app or a flight reservations service, you’ll be able to add tasks, bookings, etc, without leaving the app or site. Also, with a single click, you can now add a Google Meet Video Conferencing link to your Google Calendar event. Doing so, keep your attendees well informed about the meeting link and description while you send out the invitation via Google Calendar.

Works with Automate.io

Automate.io can help you connect your apps with Google Calendar in many useful ways. For example, you might want to create Google Calendar events from rows on Google Spreadsheet or update a card in Trello when a Google Calendar event is modified.

2. Woven

Best Calendar App for arranging meetings

Woven is a calendar app specifically designed to help business people arranging meetings and other events with others.

Most suitable for: Busy professionals

Pricing: Free

Platforms: iOS, Mac, Windows, Web

For the Woven app, the mobile view doesn’t show the calendar view with each day but does show key dates and recent updates from your plan.

Key features

Smart Templates: Most professionals have meetings where the details repeat often; for instance, perhaps your marketing meetings always take place in the same building and room. Smart Templates let you create a template for these meeting types, to save you entering the same information each time.
Scheduling Links: Scheduling Calendar feature allows people to agree on a meeting time without having to get involved in endless email discussions. Instead, you just share a special scheduling link. Guests click on the link and select the most convenient time from those you offer.

Availability Sharing: The Availability Sharing feature allows other people to see if you are free or busy at a specific time, without letting them see all the contents of your calendar.
Group Polls: Group Polls are one further way of agreeing on the time of a meeting collectively. Once you activate your poll, Woven collects the votes, and reports back the results, leaving you to make the final decision on when to schedule the meeting.

3. TimeTree

The best calendar app for your personal life

TimeTree brings together your work and social calendars to help friends and relatives share information and keep track of what everyone is doing.

Most suitable for: Couples, families or small groups

Pricing: Free

Platforms: iOS, Android OS, web browser

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Key features

Contextual calendars: Whenever you create a new calendar, you’re asked whether it’s for personal, family, friends, work, relationship, or group use. This categorization really helps to keep the different aspects of your life organized.

Chat rooms: TimeTree encourages collaboration, so each event you create is given its own chat room, to allow comments, ideas, questions, and images to be exchanged.
Map of the event in the view: TimeTree allows you to add locations to each event, and automatically pulls in a Maps view.

Undecided dates: If you want to pla

Best Calendar Planner App