Customizable calendar

Best calendar apps of 2021


The best calendar apps don’t just make it easy to set up and manage reminders, but also integrate with desktop software platforms.

For personal users, a calendar app may just be useful, but for business users, a calendar app is essential.

For personal use, you can set it up to remember annual events like birthdays, as well as one-off events like medical appointments, day trips, and family visits.

For business purposes, this can be a great way to cover all of that, as well as larger business issues like deadlines, meetings, and events.

The best calendar apps will not only work on their own, but will also integrate with other essential apps you use, such as your email program and office software. This way, you can receive timely notifications of whatever is happening on your calendar.

Unlike a paper calendar, it’s also much easier to edit and edit entries, which is especially useful in the event that appointments or meetings have their schedules changed.

Either way, a really good work schedule can be a figurative lifeline, so no matter how busy you are, you can handle whatever events you need to keep on top of. So here are the best calendar apps currently available.


(Image credit:


The best all-around calendar app

Reasons to buy

+Free version+Lots of tools+Ideal for touch screens+Color coded events

Reasons to avoid

The free version is limited is our pick of the best all-around calendar app. It’s available on mobile and desktop platforms, but it really shines on mobile with an easy-to-use interface that gives you all the tools and information you need on smaller touchscreens.

It easily connects to existing calendar apps to import events, and it color-codes various calendars and events to help keep everything tidy.

It’s not as in-depth as some specialist business calendar apps, but for most people it’s a great way to keep your meetings and appointments tidy.

Best of all, there’s a free version you can try.


(Image credit: Google)

2. Google Calendar

The best cloud calendar app

Reasons to buy

+Free use+GMail integration+Email reminders

Google Calendar may not seem like a top choice for Android users over some of the more feature-rich competitors, but it gets the job done. Best of all, it works well with Gmail and other Google Workspace apps, with notifications sent to your Gmail account by default.

Plus, for those with larger screens, Google Calendar will work with emails from your Gmail account, making it easy to see upcoming events and notifications, before you’ve even sent them. It also allows you to set reminders based on birthdays, tasks or general reminders.

The great strength of Google Calendar is that it is a cloud-based app that can sync across all of your devices, if you sign 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 always have the same calendar available, as well as notifications.

While Google Calendar is relatively simple and straightforward, devoid of some of the bells and whistles of other programs, including color-coded entries, it can be as loud as anything. And since Google Calendar is free, it’s hard to go wrong.


(Image credit: Flexibits)

3. Fantastic

The best calendar app for Apple fans

Reasons to buy

+Designed specifically for Apple devices+Support for Mac, iPhone, iPad and Apple Watch

Reasons to avoid


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

It has an app for just about every Apple product and has been designed from the ground up to support macOS. Best of all, everything 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 it can also verify that your coworkers are available for a proposed meeting using Google Apps or Exchange, making it a more powerful app than the default calendar of ‘Apple.

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


(Image credit: Google Play)

4. Business calendar 2

The best calendar app for Android

Reasons to buy

+Easy management of multiple calendars+Large selection of widgets

Reasons to avoid

Advertising funded

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

Don’t be put off by the name, because although it is an app intended for business use, it is an attractive and easy to use calendar app which is also ideal for home users. .

It comes with a number of themes and widgets that allow you to customize the look of your calendars. It does a great job of managing multiple calendars and displaying them in an easy-to-understand layout and it’s free to download.

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


(Image credit: Microsoft)

5. Outlook Calendar

The best calendar app for Windows

Reasons to buy

+Easy to use+Integrates with Windows and Microsoft Office

Reasons to avoid

The interface is a bit ugly

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

It integrates tightly with Windows 10 and uses the same Microsoft account you use to sign in to Windows, which means your contacts, events, and calendars should all be waiting for you.

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

Although designed by Microsoft, Outlook Calendar is available on a wide range of platforms, including Android and iOS, and you can view your calendar online as well.

Another plus is that if you’re already using Google Calendar, Outlook Calendar can import your dates and events directly, so you can be handy if you need to.


(Image credit: Mozilla)

6. Lightning schedule

The best calendar app for Linux

Reasons to buy

+Lots of features+Easily configurable+For thunderbird

Reasons to avoid

Dated appearance

There are a number of open source calendar apps for Linux, but in our opinion, Lightning Calendar Thunderbird email client for Mozilla is the best.

It has an easy-to-use (albeit slightly 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 stand-alone app, so you have to use it with Thunderbird (and install it from the Thunderbird Add-ons website).

However, Thunderbird is also one of the better email clients, so we recommend that you install it anyway. It also works with Windows PCs.