The global app and its Chinese version, called Douyin, have amassed over 2 billion downloads on Google Play Store and Apple’s App Store, mobile insight firm Sensor Tower said Wednesday.

TikTok is the first app after Facebook’s marquee app, WhatsApp, Instagram and Messenger to break past the 2 billion downloads figure since January 1 of 2014, a Sensor Tower official told TechCrunch. (Sensor Tower began its app analysis on that date.)

A number of apps from Google, the developer of Android, including Gmail and YouTube, have amassed over 5 billion downloads, but they ship pre-installed on most Android smartphones and tables.

TikTok’s 2 billion download milestone, a key metric to assess an app’s growth, comes five months after it surpassed 1.5 billion downloads.

In the quarter that ended on March 31, TikTok was downloaded 315 million times — the highest number of downloads for any app in a quarter and — surpassing its previous best of 205.7 million downloads in Q4 2018. Facebook’s WhatsApp, the second most popular app by volume of downloads, amassed nearly 250 million downloads in Q1 this year, Sensor Tower told TechCrunch.

As the app gains popularity, it is also clocking more revenue. Users have spent about $456.7 million on TikTok to date, up from $175 million five months ago. Much of this spending — about 72.3% — has happened in China. Users in the United States have spent about $86.5 million on the app, making the nation the second most important market for TikTok from the revenue standpoint.

Craig Chapple, a strategist at Sensor Tower, said that not all the downloads are as organic as TikTok, which launched outside of China in 2017 and has engaged in a “large user acquisition campaign.” But he attributed some of the surge in downloads to the COVID-19 outbreak that has driven more people than ever to look for new apps.

India, TikTok’s largest international market, accounts for 30.3% of the app’s downloads, according to Sensor Tower. The app has been downloaded 611 million times in the world’s second largest internet market.

From a platform’s standpoint, 75.5% of all of TikTok’s downloads have occurred through Google Play Store. But the vast majority of spending has come from users on Apple’s ecosystem ($435.3 million of $456 million).

TikTok’s parent firm ByteDance, which was valued at $75 billion two years ago, counts Bank of China, Bank of America, Barclays Bank, Citigroup, Goldman Sachs, JP Morgan Chase, UBS, SoftBank Group, General Atlantic, and Sequoia Capital China among some of its investors.