Mobile device owners are switching on Google’s Chrome browser en masse.

Google announced new mobile usage figures at its Chrome Dev Summit in Mountain View, Calif., today, and the growth is clear. Chrome has picked up more than 400 million monthly active users on mobile, up 300 million from June, when the company hosted its annual Google I/O conference in San Francisco, said Google software engineer Darin Fisher.

A post on the Google+ page for Google Chrome Developers confirms the growth.

As for other browsers, the Opera browsers had racked up 100 million active users on various Android devices as of late August, according to one report.