Most Used Apps in the World 2021


One of the most used apps in the world in 2021 is TikTok, a social networking app that allows people to share short videos and connect with each other.

Amidst the pandemic, when people had to stay at home with nowhere to go and no one to meet, TikTok managed to steal the show and become the rising star leaving behind Facebook, Instagram, and WhatsApp.

In this blog, we'll be taking a close look at the most popular apps of 2021 and the reason why they gained so much attention.

Top 5 Most Used Apps in the World

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TikTok ranked no.1 with 3 billion downloads in June 2021 and currently accounts for 689 million active users. It is available in more than 200 countries and has an approximate valuation of $100 billion.

TikTok's algorithm is unlike many others of its kind, as it figures out what users want to see and keeps them coming back. For example, most other apps will serve up videos randomly, but TikTok uses an algorithm that shows more engaging content for each user.

This way, the app continues to get higher engagement without frustrating users who don't want to see what they are not interested in. For instance, if your account leans towards fitness content, TikTok will feed you more fitness-focused TikTok videos over time.

If you post a lot of makeup tutorials, you are going to be shown related video posts from either the account you follow or the accounts TikTok thinks you might like following or accounts that users you follow might be interested in.

Another unique aspect of this app is the hashtags used by creators to bring more attention to their content for TikTok’s algorithm.

Most apps use hashtags to find related content, but because TikTok heavily relies on video creation (instead of just social media sharing), hashtags are much closer to what users would call "challenges" than traditional Instagram or Facebook tags.

Creators will tag each other in videos with different challenges, such as #baddie or #NoMakeUpTuesdays, which drives even more individuals to participate in the challenge. This builds up excitement around the app and encourages users to make more content.

Free/Paid: Free

Target audience for the app: Anyone from the age of 13 years to 60 years.

Availability: iOS & Android

Category: Entertainment/Video Sharing


Facebook is one of the most popular apps because it covers both aspects of web surfing and communication. As per a social media statistics report by Hootsuite, Facebook takes the crown for being the most used social media platform, with 2.7 million monthly users and 1.82 billion users logging in every day.

Everyone knows about the news feed-the homepage for every Facebook user. So why go directly to CNN or ESPN to find out what's going on in the world when you can get a quick update from your friends?

Why go directly to Yahoo Sports when you can find out the latest on your favorite football team from the people on Facebook who are also interested in that team?

Why would anyone watch TV or listen to a radio broadcast when they could just check their news feed and pass some time scrolling through status updates, reading articles, browsing photos of cats wearing top hats, and watching videos about how to cook a steak while still maintaining its red color instead of turning it brown?

Do you get what we're trying to say? Facebook encompasses a broad range of aspects when it comes to social networking. Aside from an easy-to-use interface, Facebook has been able to lead the market due to its constant upgrades that enable the app to offer maximum innovation.

Free/Paid: Free

Target audience for the app: Anyone from the age of 18 years to 65 years.

Availability: iOS & Android

Category: Social Networking


As of July 2021, WhatsApp has become the most used online messaging app, with two billion users accessing it monthly.

WhatsApp allows people to communicate with each other on their own terms. Its privacy settings allow users to determine who they share their information with and who gets to see the things that they want to share.

They can be uploaded so others can download them from Dropbox but not shared beyond a certain number of people on a list.

When WhatsApp was first created, its founders believed that making it as easy as possible for people to communicate with one another without restrictions imposed by an outside source would allow them to be more comfortable investing time into the app and choose the platform on a more consistent basis.

Using WhatsApp means that you get to communicate with others without having to spend money texting them or calling them. All you need in order to send messages over the internet, for free, is to have an internet connection.

WhatsApp Messenger is suitable for people of all ages because it is so simple and easy to understand how it works.

There are no complicated settings or things you need to adjust in order to get started with using this app - just install, open the app, enter your number, enter a contact number, and you are ready! Then, you can simply start sending messages.

Free/Paid: Free

Target audience for the app: Everyone

Availability: iOS & Android

Category: Online Messaging


Zoom is the fastest-growing video teleconferencing app with the flexibility to run smoothly across all platforms. The app offers a user-friendly interface that is easy to set up and manage.

The app has 467,100 business customers, 45 billion minutes of webinars, and a revenue of $882 million.

The reason behind how zoom became the most popular video teleconferencing applies to how seamlessly people can set up their meetings. While making a call on Zoom, participants enter a meeting code, and they're instantly connected.

As per the third quarter of the fiscal year of 2021, almost 3.3 trillion meeting minutes were logged on Zoom.

The main selling point of the app is the free 40 minutes of conference calls that 100 people can attend. This aspect of the app not only enables the business to explore the app but is unable to understand why it is worth it.

Free/Paid: Free and Subscription plans

Target audience for the app: Everyone

Availability: iOS & Android

Category: Business/ Video Conferencing


The simple answer to why Instagram is popular is that it offers photo filtering.

Before this type of technology, pictures were taken in the best light possible, and pictures on film were certainly not manipulated—they were either good or they weren't.

With this new app on smartphones, pictures can be taken on a bad camera and then adjusted with a filter until the picture looks decent. This gives more people access to having a decent-looking photograph.

Another reason why Instagram may have become so popular is that it came out at the right time with the right social-media community already established on Twitter and Facebook.

According to the latest Hootsuite report on Instagram, the app will have 1.22 Billion users in 2021 who spend about 30 minutes on it.

In addition, 81% of the people use Instagram to research products and services, and 50% of them visit the business's website.

Free/Paid: Free

Target audience for the app: Anyone from the age of 13 years to 60 years.

Availability: iOS & Android

Category: Photo & Video, Social Networking

Some Honorary Mentions


Snapchat is a multimedia messaging app that allows users to take photos, record videos, add text and drawings and send them to a controlled list of recipients. The images and videos sent through this app are called "snaps" - they can be viewed for up to 10 seconds before they become inaccessible.

This makes the app so popular among teenagers who do not wish their parents or other prying eyes to see what they are up to! It also allows people living far away from each other to stay connected through sharing photos, text messages, or videos even when both parties are busy.

Snaps can be viewed for up to 10 seconds before disappearing indefinitely, making this app ideal for sharing sensitive/personal content that might otherwise not be shared through conventional methods.

Snapchat also has a "stories" feature where users can share photos or videos with all of their friends on the platform over the course of 24 hours. This preserves the privacy of the people involved while still letting everyone connected to them know what they have been going about. Snapchat is available on iOS and Android.

Facebook Messenger

This mobile app serves as an alternative way to access Facebook's services from your mobile device. It allows you to chat directly with your Facebook contacts, send them text messages and voice notes, share files and multimedia, among other things.

One of the most popular features of Facebook Messenger is the ability to "like" messages. This feature has driven up engagement and interaction on the platform. It also allows people living far away from each other to stay connected through sharing text messages or videos even when both parties are busy.

Live Location Sharing: A new feature recently implemented allows you to send your live location for a limited time period to selected contacts so they know where you currently are and can help if need be.

Facebook Messenger is available on iOS, Android, and Windows Phone.


YouTube is the second-largest search engine in the world behind its parent company Google. People watch YouTube videos for all sorts of reasons.

YouTube offers a “stories" feature where users can share photos or videos with all of their friends on the platform over the course of 24 hours.

This preserves the privacy of the people involved while still letting everyone connected to them know what they have been going about. Snapchat is available on iOS and Android.

Mobile App Stats You Need To Know in 2021

As technology advances, more innovation comes to the surface.

Mobile applications are also one of the blessings of technology that have completely transformed how people interact, communicate and go about their day-to-day tasks.

It's hard to remember what life was like before mobile devices, but it's even harder to imagine living without them. Mobile apps are almost always the first thing people turn to when they need help or want information on something they are or looking for.

They make our lives easier by doing everything from making calls and sending text messages to helping us do our jobs better by offering instant access to data that used to only be available at a computer.

Apps are great because you can get specific information tailored directly to your needs, which would often take too long if you were searching through the internet on your computer instead of your phone app.

Mobile apps are the future of business, but what data should you be focusing on to make your product better? Here are some mobile app insights that will help you make informed decisions if you're looking forward to building an app:

  • It can be expected that mobile apps downloads will reach 285 billion by the end of 2021 and generate over $156 billion with consumers' in-app spending.
  • People spend a record time of 3 hours and 45 minutes on their app daily.
  • Mobile games are leading the way in terms of downloads, commanding 40% of all app installs this year, followed by lifestyle (12%) and utilities (11%).
  • 40% of people will never return to an app that offers a bad user experience.
  • App users will determine the credibility of a brand just by the user experience it offers.

Key Factors Affecting the Usage of the App

Mobile app usage continues to grow at an astronomical pace because they make it easier to access multiple services through a single platform. Things like paying your electricity bill or buying groceries are now much more streamlined-thanks to mobile apps. The one question remains, though; what factors affect an individual's decision on whether they should download an app or not?

  • Gaming apps are booming. They have surpassed all other apps and gained a huge chunk of market share.
  • Apps need not be free anymore. This once was a big selling point, where users were drawn in by the low price tag on these services. However, with the seamless adaptation of technology, businesses would be willing to buy paid versions of the app to enhance their communication and operations.
  • People want convenience, so apps need to be immediately accessible, ideally standing out on a home screen or being available soon after opening an app store. If people cannot find your app quickly, then they will move on and find another app offering the same services as you.
  • Apps must stand out from the crowd because of the sheer number of their availability now. There needs to be something unique that makes people download your product rather than someone else's. So, make sure your app is something that the market wants and make it stand out from the rest.
  • Apps need to become a part of a user’s life. If a customer doesn't open your app once a day or even a week, you have not made it relevant or useful enough for them. People will continue to use apps when there is value each time they open your app.

Final Words

According to Gartner, mobile apps are expected to generate $77 billion in revenues by the end of this year.

While most of us were worried about why it was taking so long for our favorite TV show episode to download, app developers and entrepreneurs were busy strategizing on how they could gain a competitive edge in this quickly evolving industry.

However, one thing is for sure--this isn't an overnight success story. Companies had put in hard work and dedicated years of research before reaching today.

These days, many firms have built their business around a mobile app because it is an extremely effective way to connect with customers.

With the growing popularity of smartphones and tablets, people have started doing most of their tasks on these devices, which means they need a relevant solution for whatever problem they're trying to solve.

For example, if someone's looking to get groceries delivered at home, then Instacart is the perfect app for this job. That's why we see exponential growth in this industry; there aren't any barriers anymore!

Your smartphone is readily available at all times; you just need an amazing product or service that solves real-world problems, and you're good to go.

Think about why Uber is such a great company; it's not just because they provide a convenient and affordable method of transportation; it's also the fact that you can book your cab from anywhere at any time and get picked up within minutes.

The same goes for Amazon--people love how easy it is to order products and have them delivered right to their doorstep before midnight. That's why we believe that mobile apps are the future.

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