The live audio app Clubhouse will launch a trial version of its app for Google’s Android users on Sunday in the United States, the company said, in a potentially large expansion of its market.

The app, which increased in popularity after the celebrity billionaire earlier this year Elon Musk And others appeared in audio chat, including startups and big rivals that provoked copy cats Facebook And Twitter.

It is available only to users Apple By devices and invitations. In some markets such as China, invitations were sought after some were auctioned on the online marketplace.

But app downloads, a measure of popularity, have fallen significantly.

According to Censor Tower, after 9.6 million downloads in February, the number rose to 2.7 million in March and then to 900,000 downloads in April.

The drop has raised questions over its long-term viability and whether its success was owed to people spending more time at home during the epidemic.

Long anticipated Android The launch is expected to reach more new users globally. The Android version will reach other English-speaking markets and then run for the rest of the world days and weeks after the US market beta launch.

Club house, Who created the category, now faces Facebook, whose CEO Mark Zuckerberg Announced in april A group of audio products, Includes clubhouse-style live audio rooms and a way for users to find and play podcasts.

In January, Twitter said it would launch a new feature for users to enter their live audio chat rooms empty space Convenience, as the company attempts to bring more content creators to court. It has been available to Android users since March.