Best calendar apps of 2021

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The best calendar apps not only make it easy with reminders to set up and manage, but will also integrate with the Office software platform.

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A calendar app can be just as useful for personal users, but a calendar app is essential for business users.

When for personal use, you can set it to remind you of annual events such as birthdays, as well as one-time events such as medical appointments, day trips, and family visits.


For business purposes, this can be a great way to cover all of those, plus, more important business-focused issues such as deadlines, meetings, and schedules.

The best calendar apps will not only work as a standalone, but also integrate with other essential apps you use, such as your email program and Office software. That way you can get good time notifications of anything coming up on your calendar.

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It’s also very easy to change and edit entries, unlike a paper calendar, which is especially useful in case the schedule of appointments or meetings has changed.

Either way, a really good work calendar can be a figurative life saver, so that no matter how busy you are, you can manage all the events you need to stay on top of it. Here are the best calendar apps currently available.

  • We have also introduced the best free office software.

1. any

best all-round calendar app

reasons to buy
+free version+lots of tools+great for touchscreen+color-coded events
reason to escape
Free version is limited is the best all-round calendar app for us. It’s available on mobile and desktop platforms, but it really shines on mobile due to its easy-to-use interface that gives you all the tools and information you need on a tiny touchscreen.

It connects easily to existing calendar apps for importing events, and it color codes various calendars and events to help keep everything in order.

It’s not as intensive as some typical business calendar apps, but for most people it’s a great way to keep your meetings and appointments in order.

The best part is that there is a free version that you can try.

2. Google Calendar

best cloud calendar app

reasons to buy
+free to use+gmail integration+email reminder

Google Calendar might not seem like the first choice for Android users when compared to some of its more feature-packed rivals, but it does the job it needs to do. Better still, it works well with Gmail and other Google Workspace apps, with notifications sent to your Gmail account by default.

Additionally, for those with larger screens, Google Calendar will run alongside the email in your Gmail account, making it easy to see upcoming events and notifications even before they’ve been sent to you. It also allows reminders to be set according to birthdays, tasks or general reminders.

The great strength of Google Calendar is that it’s a cloud-based app that can sync across all of your devices, if you’re signed in to a Google account. This means that it doesn’t matter whether you’re on a desktop or on the go with a smartphone, you can still have the same calendar available, and notifications too.

While Google Calendar is relatively simple and straightforward, it lacks some of the bells and whistles of other programs, not least the color coded entries, which can be just as much a force to be reckoned with. And since Google Calendar is free to use, it’s hard to mess with.

  • Read our full Google Calendar review.

3. Fabulous

Best Calendar App for Apple Fans

reasons to buy
+Specifically designed for Apple devices+Support for Mac, iPhone, iPad and Apple Watch
reason to escape

If you have a wide range of Apple devices, from MacBooks to iPhones and even Apple Watches, then Fantastic is the best calendar app for you.

It has an app for every Apple product, and it’s built from the ground up to support macOS. The best part is that it all syncs seamlessly between your devices, making it a powerful and useful calendar app for Apple fanatics.

You can set up meetings and events quickly and easily, and also check to make sure your coworkers are available for proposed meetings using Google Apps or Exchange, making it a better choice than Apple’s default calendar. It becomes a more powerful app.

There is a free version available with basic features, which means it will function similarly to other free calendar apps. However, there is also a premium version available as needed, which allows for collaboration, such as Zoom for video conferencing, and is also customizable.

4. Business Calendar 2

best calendar app for android

reasons to buy
+Easy to manage multiple calendars+Large selection of widgets
reason to escape
ad supported

Android users are a bit spoiled, as the default Google Calendar app is great, however, the best calendar app for Android devices is Business Calendar 2.

Don’t be put off by its name, although this is an app that’s geared for business use, it’s an attractive and easy-to-use calendar app that’s perfect for home users as well.

It comes with several themes and widgets that let you customize the look and feel of your calendar. It does an excellent job of handling multiple calendars and displaying them in an easy-to-understand layout and it comes as a free download.

Although the basic version is free, it is supported by ads. However, there is also a Pro version that removes the ads and includes a few extra features, all for a reasonable price.

5. Outlook Calendar

best calendar app for windows

reasons to buy
+easy to use+Integrates with Windows and Microsoft Office
reason to escape
Interface is a bit ugly

If you are a Windows 10 user, Microsoft’s own Outlook Calendar is arguably the best calendar app for you.

It integrates closely into Windows 10 and uses the same Microsoft account you use to log into Windows, which means your contacts, events, and calendar will all be there waiting for you.

It’s free, but you get premium features if you subscribe to Microsoft 365 that also make it an essential business calendar app. You can also connect your LinkedIn account.

Despite being made by Microsoft, Outlook Calendar is available on a huge range of platforms, including Android and iOS, and you can also view your calendars online.

Another plus is that if you’re already using Google Calendar, Outlook Calendar can import your dates and events directly, so you can have them on hand if needed.

  • Read our full Microsoft Outlook review.

6. Lightning Calendar

best calendar app for linux

reasons to buy
+lots of features+easily configurable+for thunderbird
reason to escape
dated attendance

There are many open source calendar apps for Linux, but in our view the best is Lightning Calendar for Mozilla’s Thunderbird email client.

It has an easy to use (if a bit dated) interface, and as an add-on it integrates easily with Thunderbird, allowing you to turn emails into events, as well as respond to meeting invitations .

You can easily manage multiple calendars and to-do lists, and it is also easily configurable. The downside is that it’s not a standalone app, so you need to use it with Thunderbird (and install it from the Thunderbird add-ons website).

However, Thunderbird is also one of the best email clients out there, so we’d recommend installing it anyway. It also works with Windows PC.

  • Best business laptop: Great laptop for work.

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