Apps with the biggest growth in 2021



2021, just like 2020, was a great year for mobile app developers. With a still going COVID pandemic, the majority of the people are still being careful by staying indoors, which means that they are using their mobile devices more often. Be it to work or to entertain themselves, billions of people were installing some of the most popular apps in Google’s Play Store and Apple’s App Store.

If you are looking to know about the 2021 app growth for research purposes or to invest in an advertisement, this article is for you. Here you will learn about the most popular apps in 2021, ranging from the well-renowned apps that grew even further this year, to the apps that made their appearance for the first time during the year.



TikTok places itself as the most downloaded app in 2021 with a total of 656 million downloads throughout the whole year. This app already has over 850 million monthly active users, and the app is still growing, being an excellent option for people looking to advertise there.

With fun short videos and an excellent user experience, TikTok rages as a relaxing app with fun content. The best thing about this app is that it has content for all types of users, making it an excellent option be it for advertisement or just to enjoy its content.


Another app that was already placed as one of the most popular ones and is still breaking ground, is Instagram. Instagram is currently placed as one of the best and most crowded social networks, being downloaded more than 545 million times in 2021.

Instagram is good for creating online stores, selling merchandise, advertising, and much more. An excellent feature of Instagram is its advertisement algorithm, some users get surprised at how easy they get advertisements for what they are looking for, and that is great news for people looking to sell products.


Facebook (Changing its name to Meta) is currently the social network with most users worldwide, which is why is understandable that it is placed in the top 3 apps with the biggest growth in 2021. Even though this social network was already surprisingly popular, Facebook is still attracting people with its new features, new content, and is one of the best ways to connect with people.

While Facebook by itself was a giant of the tech industry, by owning WhatsApp and Instagram, this company is covering even more ground. Facebook is the best place for users to look for original content, share with relatives, and even buy articles from different stores online.


WhatsApp has been covering even more ground in these last few years, becoming one of the most popular apps worldwide. In 2021, WhatsApp was the 4th most download app, accumulating much more than 2 billion users in total by this date. With the business account, WhatsApp is one of the best ways for sellers to connect with customers, offer products, and much more.


Telegram is positioned itself as the main competitor of WhatsApp. Last year when WhatsApp and Facebook went offline, Telegram rose and increased its overall user amount by millions. In 2021, this app was downloaded around 329 million times, having currently around 500 million users worldwide.

This chatting app is an excellent tool for people to communicate. Telegram includes a wide variety of features, like amazing group conversations, news channels, bots, and many other interesting tweaks that position it as one of the most growing apps of the year.


With the COVID-19 pandemic, Zoom became a necessity, which is why this desktop and the mobile app became the preferred option for many people making video calls and VoIP calls. Nowadays practically every businessman, office worker, and many families use Zoom as their main app to video chat, text chat, and have VoIP calls. In 2021, this app was downloaded around 300 million times.

Presently Zoom is still issuing hundreds of thousands of licenses to enterprise customers, on top of the free users that are joining the platform. Considering that this app has one of the best compression algorithms for video calls, it is no surprise that it became the most popular option for video calls.


Being considered nowadays as the main musical streaming platform and one of the most popular apps worldwide, Spotify was downloaded more than 200 million times in 2021. This app has over 170 million paid users, and even more free users that enjoy free music while listening to ads every day.