Introduction

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We’ve all heard of Gmail. Some of the older ones probably remember Hotmail too. But chances are you don’t use those in a professional setting.

Microsoft Outlook had dominated the scene of business email providers. But no more. Now there are loads of good email clients. To get the skinny on the best email clients, both paid and free, check out this super roundup.

Best email clients comparison chart (top 10 highest rated)

^{*Not including free versions}

What is an email client?

An email client is a more robust email app than your average Gmail or Hotmail.

Firstly, an email client lets you host your email data on your own computer, as well as on the cloud sometimes. This is opposed to webmail which hosts everything on a server. That’s why client-based emails are better for business purposes: You have better access and protection over your work emails.

Secondly, email clients let you sync multiple email accounts into one UX. You can bring in your Gmail, Outlook or Yahoo accounts and use them all in one unified inbox.

There are a lot of great features when it comes to the functionality of email clients. These go beyond showing which emails have been read, and which are still unread.

The best email client solutions do the following:

• Send later lets you write an email and schedule it to be sent at another time

• Smart inboxes in email clients can identify important emails

• Read receipts show you when someone has opened your email

• Email templates let you save and reuse emails

• Attachment management lets you store and retrieve attachments

• Snooze buttons help you avoid email distractions for a period of time

• Encryption is often more robust with special email clients, using tech like PGP

• Phishing or other suspicious emails get flagged by email clients

• Calendar tools let you create events directly from an email invitation

• Contact tools let you create or edit a contact directly from an email

• Collaboration tools let you share emails with colleagues and work as a team

These are just some of the great features you can expect with the best email apps.

What are the best email clients? Here’s our top 15 list:

Now that you’ve learned a thing or two about email solutions, it’s time to explore your options. This list of the best email clients covers both paid and free versions. We highlight their strong suits and list off their best features. Read on to find your perfect email client fit.

Microsoft Outlook (Best email client for Windows 10)

Forget Gmail. When it comes to email servers at the office, Microsoft Outlook is probably the best known name in email services. It first came out with Microsoft Office 97.

Microsoft Outlook combines email and calendar tools in one place. It identifies emails that are “focused.” These are important emails. You can easily create calendar events or tasks directly from the email dashboard. Outlook has good enterprise-end encryption. There’s also ransomware detection. Microsoft Outlook integrates mainly with other Microsoft products like Office and cloud storage app OneDrive. Outlook comes with mobile apps for iOS and Android.

There is a free version of Outlook. Premium versions come with Office 365. Personal plans go for $69.99 for one user, $99.99 for up to 6 users, both per year. Business plans are $5, $12.50 and $20 per user per month billed annually.

Microsoft Outlook is best for:

• SMBs

• Large businesses

• Enterprise

• Calendar

• Microsoft 365 integrations

• Windows users

Mozilla Thunderbird (Best alternative to Gmail)

Thunderbird is the email product of Mozilla. Like all of Mozilla’s apps, Thunderbird is free and open source. Its latest version came out in September 2020.

Mozilla Thunderbird is a free and easy to use email app. Anyone can set it up and use it like a pro in minutes. There are many customization options for the Thunderbird dashboard with add-ons. These include extensions, plugins for more features, and themes for different looks. For security, it offers do-not-track and phishing protection. There’s also an add-on for PGP encryption. You also get calendar and to-do tools. One-click address book makes it easy to add new contacts. Attachment reminders make sure you don’t forget to add mentioned files. Finally if you have multiple email accounts, Thunderbird helps keep them organized with smart folders.

Thunderbird is totally free. So are the many add-ons by Mozilla and other companies.

Thunderbird is best for:

• Free users

• Startups

• SMBs

• Customization

• Multiple email accounts

• Ease of use

eM Client (Best email client for Windows & Mac)

eM Client Inc. is a software company out of the Czech Republic. It got off the ground in 2017. It’s flagship app is the email client of the same name.

eM Client works in over 20 languages. It runs on the operating systems of Microsoft Windows and macOS. It supports the major email technologies. These include POP3, SMTP, IMAP, and more. You can encrypt your messages with PGP for added security. eM Client lets you watch for replies and gets you read receipts. You get access to email templates. There is an attachment manager. You can schedule emails to send later. eM Client includes modules for calendars, task management and contact management. You can also do messaging through eM Client.

There’s a free version of eM Client for 2 email accounts. The pro versions start $49.95 per device.

eM Client is best for:

• Startups

• SMBs

• Templates

• Messaging

• End encryption

• Translation

Mailbird (Top email client for multiple accounts)

The folks behind Mailbird call themselves a “A Brilliant Team of Email Innovation Nerds.” That should inspire confidence that they are serious about great email.

Mailbird operates on Windows. It specializes in handling multiple email accounts. You can sync from other email accounts into a unified inbox. The dashboard is clean and pleasing to the eye. Figuring out Mailbird’s features is intuitive. You can customize the look with color themes and layouts. Other Mailbird features include speed reader, snooze buttons, and attachment searching. Mailbird excels at integrating with other useful tools. These include Twitter, Whatsapp, Facebook, Evernote, and more. It also works with Google Drive and Calendar, Dropbox and Slack.

Mailbird Personal is only $1.63 per month, $19.50 per year, or a one-time payment of $39.50. Mailbird Business is $2.88 per month or $34.50 per year.

Mailbird is best for:

• One person business

• Startups

• SMBs

• Unified inbox

• Multiple accounts

• Integrations

• Windows users

Airmail (Top email client for iPhone)

Airmail is the email client by the Italian software development Bloop SRL. They design apps for macOS and iOS. Airmail is Bloop’s main product.

Airmail works exclusively within the Apple ecosystem. It runs on iPhone, iPad and Mac computers. The design is native to each device. Apple has often praised Airmail’s cool look. The platform can respond to Siri. It syncs multiple accounts from the likes of Gmail, iCloud Mail, Office 365, Microsoft Outlook, IMAP and POP3. It lets you manage them all in one unified inbox. A smart inbox sorts out the important emails for you. You get snooze tools and send later tools. Airmail lets you set up workflow rules to automate your email management. There is a privacy mode to work offline. It also prevents pixel tracking. The iOS versions use FaceID and TouchID for extra security. Airmail even works on Apple Watches.

You can download Airmail and use many features for free. Airmail Pro is $2.99 per month or $9.99 per year. Airmail Business is a single purchase of $49.99

Airmail is best for:

• Single users

• One person business

• Small teams

• iOS devices

• iPhone users

• Unified inbox

Spike (Good desktop email client)

Spike is an Israeli company. It got off the ground in 2017.

You can best use Spike on your desktop with a web browser. It also works on other devices. They have apps for iOS, Android, Windows and macOS. The Spike approach is called conversational email. It removes things like subject lines and signatures to make the email thread easier to follow. The inbox highlights important emails. Spike also has a note app that’s good for collaboration. You can also chat in a sidebar in real-time. Group chats with team members work too. There are scheduler and to-do tools. Spike uses email encryption to keep your stuff safe.

Spike offers a free version. The pro plan is $4 and the Business plan is $6, both per account per month billed annually. Contact them for Enterprise prices.

Product name is best for:

• Freelancers

• Startups

• SMBs

• Group chat

• To-dos

Hiri (Good email client for Mac)

Hiri is an Irish email client. It was first released in 2012.

Hiri is an email app for Mac. It puts simplicity first. Aside from email it does calendars, to-do lists and contacts. Hiri also puts a lot of attention to its design details. This includes features to remove clutter. Hiri syncs all calendar events from Office 365 and Exchange. You can share your calendars too. Hiri has an offline mode for added privacy. You also get reminders and snooze tools.

Hiri costs $39 per year or $119 for life.

Hiri is best for:

• Startups

• SMBs

• Large businesses

• Shared calendars

• Mac users

• Design

Mailspring (Good free email client)

Mailspring forked off from the mail client Nylas Mail. It’s open-source and built with a native C++ sync engine.

Mailspring works with macOS, Windows and Linux. It lets you use multiple IMAP & Office 365 accounts. It’s got a lot of the basic email features. These include undo send and read receipts. There’s also snooze and reminders. The dashboard is customizable with layouts and themes. Mailspring does real-time translation with English, Spanish, Russian, simplified Chinese, French, and German. There’s an RSVP feature that lets you instantly respond to email invites. Your contact list in Mailspring has profiles with Linkedin bios, social media links and company information.

Mailspring has a free version. The pro version is $8 per month.

Mailspring is best for:

• Freelancers

• Startups

• SMBs

• Translation

• Contacts

INKY (Top email app to block phishing)

INKY is an email app that is foremost about protection from phishing and other fraud. It uses AI and machine learning to do this.

INKY blocks malware, spam and phishing. Its detection is more robust than average email clients. Warnings on emails range from safe, unusual and malicious. You get visibility and email tracking into the blocked emails. It also guides you if you want to examine the suspicious email closer. You can report any suspicious email with one click. INKY’s platform is hosted in the cloud. It supports Office365, Exchange and G Suite. This email security app scales up to companies of any size.

You can request a demo from INKY’s website. For prices contact them as well.

INKY is best for:

• Small businesses

• Large businesses

• Enterprise

• Email security

• Phishing detection

• Spam and malware detection

Spark (Good email app for team collaboration)

Spark was made by Ukranian app development company Readdle. They launched Spark back in 2015.

Spark has mobile apps for iPhones and Androids. There’s a desktop version for macOS and one for Windows is on its way. It syncs email accounts from Outlook, iCloud, Google, Yahoo, Exchange and IMAP. The intelligent inbox sorts out important emails. You can also pin important emails. There is a batch email action feature. You can also get notifications when emails come from people you know. You can work with team members with Spark. It lets you write drafts together or add private notes. Team leaders can delegate emails tasks from the email inbox. It lets you set deadlines and track progress. There’s the usual send later, follow-up reminders, snooze and customizable signatures.

Spark has a free version. The best team collaboration tools are in the Premium plan at $6.39 per user per month billed annually. Contact Spark for enterprise plans.

Spark is best for:

• Startups

• SMBs

• Large businesses

• Managers

• Team collaboration

• Task management

Postbox

Postbox was first released in 2007. The brains behind this desktop email client came out of the Mozilla team. It was originally based on Thunderbird.

Postbox positions itself as a professional email app. The UX is very straightforward and familiar. It syncs accounts from Yahoo, Gmail, iCloud, Office 365, Outlook, and more. The dashboard lets you see your emails in tabs. Email tools let you group your accounts. You can create favorite folders. There is advanced searching and filtering. Postbox also offers file and image management. Pre-canned responses, professional-looking signatures and pre-formatted clips are also available. There’s also an HTML code editor. Postbox uses PGP encryption.

Postbox offers one-year licenses for $29. A lifetime license is $49 (though subject to change).

Postbox is best for:

• Freelancers

• Startups

• SMBs

• Desktop email client

• Tabbed browsing

Superhuman

The reviews are very mixed about Superhuman Email. Some love it, others are underwhelmed. Still this email app is worth mentioning.

Superhuman tries to reinvent a lot of email UX. The design is very streamlined and sleek. Superhuman also puts speed as the top selling point. They claim every action takes less than 100 milliseconds. It uses powerful AI in the email tirage stage. This sorts the important emails from the lesser ones. You get an undo send option. There’s also follow-ups, reminders and send later tools. Read statuses and read receipts are also part of the toolset. Superhuman gathers insights on your contacts from LinkedIn and other social media.

While there is no pricing listed on the website, other reviewers have noted that Superhuman costs $30 per month.

Superhuman is best for:

• SMBs

• Large businesses

• Fast emailing

• AI triage

ProtonMail

ProtonMail is the creation of Swiss scientists who met while working at CERN. That’s some big brains behind this email client.

ProtonMail is an email platform with full end-to-end encryption email. Security is a big deal with ProtonMail, Swiss-style. New accounts are made without needing to use personal information. It doesn’t store any IP logs. You can use ProtonMail with a web browser, or on iOS and Android devices. ProtonMail is open-source and simple to use. The interface has the look and feel as any normal email app.

ProtonMail offers a free version. The Plus version is good for one person at $5 per month. The Pro version is $8 per user per month, and the Visionary version is $30 per month for 6 users.

ProtonMail is best for:

• Individuals

• Freelancers

• Startups

• SMBs

• End to end encryption

• Email privacy

Zimbra

Zimbra was developed by Synacor. That’s a technology company out of Buffalo, NY. Synacor launched Zimbra in 2005.

Zimbra is collaboration software. A big part of it is the email server. The idea is to combine email with other teamwork tools. These include live chatting, 1:1 messaging and group chats. There’s also video conferencing, file sharing and screen sharing. There are tools for real-time collaboration on documents. For emailing, you can sync up Gmail, Yahoo, IMAP and POP. The platform works on Windows, macOS and Linux. You can create tags for emails. Email threads are displayed on multiple tabs. You also get undo send, restore email and scheduled delivery. Calendar and contact management are also available.

For prices contact Zimbra through their website.

Zimbra is best for:

• Teams

• Startups

• SMBs

• Collaboration

• File sharing

Shift

Shift hails from Victoria, Canada. The people behind Shift have a goal to make work both more productive and more fun.

The Shift approach is to help you manage multiple workflows. You can create custom workspaces inside Shift and invite people to collaborate. Shift is a desktop email client that lets you sync up many email accounts into a unified inbox. It integrates G Suite apps, as well as Slack and Facebook Messenger. You can add extensions to Shift. These include things like Grammarly, Dropbox, HubSpot and Zoom. The overall idea is to create Shift Workspaces and add all your web apps to the UX. It can replace basic web browsing.

The basic Shift plan is free. The Advanced and Team plans are $99.99 per year.

Shift is best for:

• Individuals

• Freelancers

• Startups

• SMBs

• Extensions

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Key takeaways

To sum it all up, you’ve got no more excuses to stick with basic Gmail or Hotmail. Sure Outlook is a decent choice for Windows users. But we hope you’ve discovered some other good email client solutions.

FAQs

What is the difference between webmail and email client?

An email client runs off your own computer, and you can also back up your emails in the cloud. This is opposed to webmail which hosts everything on a server. Email clients are more common for business purposes, while webmail is more for personal use.

What is client-based email?

Client-based email is email software downloaded to your computer. It also stores your email archives on your own computer. You can back up your emails in cloud storage. Client-based emails have more features than simple webmail, and are often premium products.

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GET THE FUTURE OF WORK TODAY

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 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

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 plan an event, but don’t want to commit to a date as yet, the ‘Keep’ tab lets you create and store an event to be worked out later on. You can store To-do lists and simple notes around these events.

4. My Study Life

The best calendar app for education

A calendar created specifically for anyone studying or working in education, My Study Life makes it easy to plan your educational activities around the academic year, including classes, exams, holidays, and term times.

Most suitable for: Students and teachers

Pricing: Free

Platforms: iPhone, Android OS, Windows 8, Chrome, web browser

Key features

• Add academic schedules: The minute you open up the app, you’re prompted to add the dates for your academic year, term times, and holidays. This is all incorporated into your calendar automatically, saving you a lot of time.
• Add classes: You don’t have to add every date of each class manually. Just tell My Study Life how your schedule works – for example, class times, start and end dates – and it will work out the rest. My Study Life makes adding classes much easier than with a normal calendar app.

• Add holidays: When you add holidays to your schedule, not only can you see which days you have off but you can also shift rotation schedules. Usefully, you won’t get reminded about your classes while you’re on holiday.
• Track your homework and revision: Often you’ll start a study task but not finish it the same day. So My Study Life lets you specify how much of a task has been completed. You can also set reminders for unfinished assignments.

Below is the clean mobile view of the My Study Life Calendar app:

Best Calendar Apps for iOS & Mac

5. Apple Calendar

A powerful and lightweight calendar app for iOS and Mac

Installed for free on Mac and iOS, Apple Calendar is a great option for keeping your calendars synced across all your Apple devices.

Most suitable for: Apple users.

Pricing: Free

Platforms: macOS, iPhone, iPad, Apple Watch

Key features:

• Built into Apple: Apple Calendar is pre-installed on all Apple devices, so there’s nothing to download, and it’s easy to sync your calendars across all of them. Plus, you can view and update your calendars via the iCloud web app.
• Clean and simple design: The beauty of the Apple Calendar lies in its simplicity. As with almost all Apple software, the interface is super-elegant, the features work smoothly and the app is very intuitive to use.
• Colour coding: Apple Calendar allows you to create multiple calendars for different areas of your life, and color-code them accordingly. That way, you can glance across your work, family, and personal events without fuss.
• Travel Time: Travel Time calculates when you need to leave for an event based on the likely length of your journey, using Apple Maps, and what mode of transportation you’ll be using to get there. Apple Calendar syncs with Apple Maps, although not with Google Maps.

6. Fantastical 3

The best calendar app for Mac

Fantastical 3 has long been the best calendar app for Mac, and the latest version brings even more improvements.

Most suitable for: Mac power users.

Pricing: $4.99 a month

Platforms: macOS, iPhone, iPad, Apple Watch

Key features

• Streamlined interface: While Apple Calendar is nice and simple, Fantastical (now on version 3) has an even better looking and more streamlined interface, particularly on desktop and iPad.
• Events and tasks templates: You may have a recurring event or task that doesn’t always happen at the same time; eg, you visit the dentist every six months, but not always on the same day. For this, Fantastical lets you create templates to save you adding all the information each time.
• Weather forecast: When you attach a location to an event, weather forecast information, up to 10 days ahead, is automatically pulled in, and updated on a minute-by-minute basis.

• Event time proposal management: Need to get people to agree on a time for an event, such as a meeting? Fantastical 3 lets you suggest multiple dates and time options in an invite email. Invitees don’t have to reply to the email (saving your inbox from getting cluttered), but just click on the options within it. If there are date and time that works for all of them, that’s set and added to your calendar automatically.

7. BusyCal

A very customizable Mac calendar app for business use

BusyCal is a Mac calendar app aimed at people who need to stay on top of a lot of events, meetings, and tasks. Its flexible and customizable features allow you to do so with a minimum of effort.

Most suitable for: Busy professionals

Pricing: $49.99

Platforms: macOS (iOS app sold separately)

Key features:

• Customizable views: BusyCal doesn’t just offer day, week, month, year, and list views; it lets you customize these views precisely. For instance, you can choose the number of weeks shown in the month view and the number of days shown in the week view.
• Customizable info panel: Redesigned for version 3, the info panel that appears in the sidebar helps you view and edit event details quickly and easily. And if you want it to show different information than the presets, the panel itself also customizable.

• Integrated To-Dos: To-Dos are integrated into your calendar, display on the date they are due, and carry forward until completed. Alternatively, you can add Timed To-Dos, which are set to occur at a specific time of day.
• Travel Time: Similar to the Apple Calendar, BusyCal has the Travel Time feature to let you block out time for travel to an event or location. You can add your own estimate for how long to block out, or ask Location Services and Apple Maps to calculate it automatically. With this, you can ensure to build enough space into your schedule to get places on time.

Best Calendar Apps for Windows

8. Microsoft Outlook Calendar

The best calendar app for Windows and Outlook users

Outlook Calendar ties in nicely with both Windows and Outlook, and helps these systems work together efficiently and seamlessly.

Most suitable for: Windows and Outlook users.

Pricing: Free

Platforms:Web browser, Windows, Windows Phone, Android, iOS

Key features

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• Integration into Windows and Outlook: Outlook Calendar is integrated smoothly into Windows and Outlook. So if you use either, you’ll find Outlook Calendar very simple to use. For example, in your Outlook email inbox, you can launch Outlook Calendar from the icon in the bottom left-hand corner.

• View side-by-side calendars: Outlook lets you view multiple calendars side-by-side, as well as calendars shared with you by other Outlook users. You can also view calendars on top of one another in the overlay view. Outlook Calendar lets you create multiple calendars and control their look and feel.

• Share only part of a calendar: Outlook Calendar allows you to share your calendar via email without sharing everything. The other person can open it in Outlook, but you control how much information they can see.
• Manage another user’s calendar: With the Delegate Access feature, you can manage another person’s Outlook Calendar once they give you permission. A personal assistant, for example, would be able to create, move, or delete appointments on their employer’s calendar.

9. OneCalendar

Best calendar app for Windows users & managing multiple calendars

OneCalendar is a great way to manage multiple calendars from different providers, bringing them all together in one, beautifully designed place.

Most suitable for: Windows power users.

Pricing: From free

Platforms: Windows 10, Windows, Windows Mobile, Android

Key features

• View all your calendars at once: OneCalendar lets you pull in calendars from a range of platforms, including Google, Live, Outlook, iCloud, Exchange, Office365, Facebook, and more.

• Multiple views: OneCalendar offers a variety of ways to view your calendars, including day view, week view, month view, year view, and list view. We especially like how all the views display week numbers.

• Customize your calendars: OneCalendar lets you choose different colors for each calendar, and select different colors for specific appointments.
• Lock screen and glance screen: To save time, you can quickly view all your upcoming appointments on the lock screen. For Windows Mobile, they can also be shown on Glance.

Best Mobile-ONLY Calendar Apps

10. ACalendar

The best calendar app for android users to customize calendars

If you’re an Android user but don’t like the way Google Calendar displays your information, then ACalendar can let you customize how your calendar looks, in several different ways.

Most suitable for: Android users.

Pricing: Free

Platforms: Android OS

Key features

1. Easy interface: ACalendar’s interface is brilliantly intuitive. Switching between day, week, month, and agenda view using swipe and tap feels so natural that there’s virtually no learning curve.
2. Colors: Many calendar apps only offer a limited range of colors, but ACalendar provides a generous 48 colors for each case type.
3. Synchronized photos: ACalendar allows you to synchronize photos from your contact lists and social networks, to add an extra visual reminder on your calendar for birthdays, anniversaries, and other special days.

Special mention to its Charity donation: When you upgrade to a paid-for version of ACalendar, the makers of ACalendar will donate 10% to environmental groups such as the World Land Trust and the Rainforest Trust.

11. Calendars 5

Calendar app for iOS users to view events at-a-glance

Calendars 5 is a powerful, feature-rich calendar app that’s comparable to Fantastical, for iPhone and iPad.

Most suitable for: iOS users.

Pricing: $2.99 for 3 month subscription; $8.99 one-time purchase

Platforms: iOS

Key features

• Natural language input: Natural language processing makes adding events easier. For instance, if you just type “Meet Tom at Starbucks on Sunday”, the event will be created automatically.
• Drag and drop to reschedule: Calendars 5 lets you reschedule events with drag and drop. You can do this online and offline.
• Set up to five reminders: You can set up to five reminders for an important event like a meeting, dinner, or a birthday, by alarm or email.
• Timeline view: The simplified Timeline view just shows you colored dots for events and colored checkboxes for reminders. This is great for getting a quick sense of your day at a glance.

12. Cozi

The most suitable calendar app for family activities

Cozi is specifically designed to help everyone in your family to keep track of each other and take part in activities together.

Most suitable for: Families

Pricing: From free

Platforms: iOS, Android OS

Key features

• Family schedules in one place: Your color-coded calendar makes it easy to see the whole family’s schedules at once, or to filter by an individual. Reminders go out to each member of the family so that everyone stays on track.
• Shopping lists: Create online shopping lists that every member of the family can access, and add to. You can cross items off the list, and add others, whenever you like. You can also email your shopping lists to other people outside of your family.
• Recipe Box: Save recipes from the ‘Cozi Picks’ tab, and transfer the ingredients into your shopping lists. You can also drag and drop recipes onto specific days in your calendar to help with your weekly meal planning.
• Family Journal: The Family Journal feature allows you to write quick notes and store photos, to help build up a store of memories that you can look back on in years to come. You can share your journal updates via email or as a private family website.

Final Thoughts on Choosing the Best Calendar App

So, that was all about the 12 Best Calendar Apps of 2021 based on the ease of use, pricing, platforms they support, best features that make them stand out, and who is it the most suitable for. To sum it up for you, the below infographic can give you all this at a glance.

Frequently Asked Questions

The best free calendar app is Google Calendar. It’s free, easy to set-up and can be used on any device syncing it with multiple other apps. Some lesser-known free calendar apps are

1. Woven
2. Timetree
3. My Study Life
4. Apple calendar
5. Microsoft Outlook Calendar
6. ACalendar

The best calendar apps for Windows 10 are

1. Microsoft Outlook Calendar (free)
2. OneCalendar

The best calendar apps for iOS and Mac are

1. Apple Calendar (Free)
2. Fantastical 3
3. BusyCal

The best calendar apps for android users are

1. ACalendar
2. Cozi

Yes, you can use the integration platform – Automate.io to integrate your Google Calendar with other apps for easy workflows and event notifications on apps like Trello, Slack or Google Sheets, for example.