It’s been one week since Spotify announced it would allow anyone on an iOS or Android tablet or smartphone to use its music streaming app free of charge. And, it appears this was a good move for the company as far as growing its listener base. The streaming music service said Thursday that downloads of the app have increased by four times in the last week; this means four times as many people are downloading the app today compared with a week ago. While Spotify would not release specific numbers, it’s likely a hefty amount of people are downloading the app. In March, Spotify said it had surpassed 6 million subscribers, a gain of 1 million since December 2012, but it hasn’t updated its user numbers since then. Spotify also has more than 24 million active users in 55 markets worldwide. A year ago, the company’s service reached only 17 countries.