Apple's 26th Worldwide Developers Conference had attendees from 70 countries.
80 percent were there for the first time, with over 1,000 engineers from Apple on-hand to watch their executives present and answer question from developers.
Apple's current operating system, OS X Yosemite, has 55% of active Mac users on its latest update, which Craig Federighi, Apple's senior vice president of software engineering, called "the fastest adoption rate of any PC operating system ever."
At last year's conference, Apple said that over 50% of users were on Mavericks, the previous version of OS X.
83% of iOS users are on the latest version of the operating system, Federighi said.
Siri, Apple's personal assistant app, gets 1 billion requests every week, Federighi said.
It's also 40% faster.
Apple Pay will work at over 1 million locations in July, said Jennifer Bailey, the head of the Apple Pay business.
In March, Apple CEO Tim Cook said that Apple Pay was accepted at more than 700,000 locations.
When Apple launches in the U.K. in July, it will be available in 250,000 locations, making it more widely available than when Apple Pay launched in the U.S., Bailey said.
Tim Cook said on stage that Apple recently surpassed 100 billion downloads on its seven-year-old App store.
With all those downloads, Apple has paid out $30 billion to developers.
Apple said that the average person has 119 apps and that 850 apps are downloaded every second.
Apple Music's catalog is 30 million songs deep.
But there's only one Drake.
