Google announced at its I/O developer conference that it now boasts over 1 billion monthly-active users on its Android platform. That’s up from a 530 million figure from last year’s I/O. Previously, Google measured Android usage_in terms of total device activations. Google announced reaching 1 billion total activations_last September. The firm celebrated hitting the 900 million mark_last May. At last year’s keynote, Google also revealed that it had seen over 48 billion app downloads across the platform. For all the news coming out of Google I/O 2014, check out our_keynote liveblog_and our_event page.