Mac users are downloading Apple’s new operating system, Yosemite, at a faster clip than they did a year ago when Mavericks first appeared, according to numbers released today by AddThis.

During its iPad and Mac event yesterday, Apple announced that Mac OS X 10.10 Yosemite was available immediately as a free download. The company had initially showed off the operating system at its developers conference over the summer.

According to AddThis data, adoption of Yosemite hit 2% on the first day. That compares to 1.2% adoption of Mac OS X 10.9 Mavericks when it debuted in October 2013.

The faster adoption is not entirely surprising. Many consider Yosemite to be a more significant upgrade than Mavericks. And it offers a number of new features that allow for tighter integration with iPhones or iPads that run iOS 8.

AddThis, which provides a social sharing and bookmarking tool, is used on 13 million websites and says it collected its data via those integrations.