Live audio app Clubhouse will begin introducing a test version of its app to Google’s Android users in the United States on Sunday, the company said, in a potentially big expansion of its market.

After being exclusive to iOS for more than a year, Clubhouse on Sunday debuted its Android app on the Play Store.

The move will allow Android users to experience the popular audio-based social network for the first time.

However, the beta app is currently live in the US but the company says the Android app will come to other English-speaking markets and then the rest of the world.

Clubhouse began testing the Android app earlier this year. For those users outside of the US, they can pre-register their interest in the app via the Clubhouse page on the Play Store. Once the app is available in their country, the users will be notified.

“Our plan over the next few weeks is to collect feedback from the community, fix any issues we see, and work to add a few final features like payments and club creation before rolling it out more broadly,” the company said in a blog post.

The, which created the category, now faces the likes of Facebook, whose CEO Mark Zuckerberg announced in April a slew of audio products, including Clubhouse-style live audio rooms and a way for users to find and play podcasts.

Clubhouse is currently valued at $4 billion. The app was launched last year by two tech veterans Paul Davison and Rohan Seth.