Tim Cook speech at Apple annual WWDC conference

Josh Edelson | AFP | Getty Images

Apple CEO Tim Cook speaks at Apple’s Worldwide Developer Conference (WWDC) at the San Jose Convention Center in San Jose, California on Monday, June 4, 2018.

Not all app makers are happy with the status quo at the company — something Apple may have to address over the next few days at the San Jose, California, event.

A group called “The Developers Union” said earlier this month it wanted Apple to increase monetization options like free trials. Some developers said they saw prices dropping and revenue declining as free apps with “annoying” in-app purchases seemed to take off instead.

But Cook touted on Monday that there are 500 million weekly visitors to the App Store.

“The app store is clearly the best place for you to be rewarded for your hard work and creativity,” Cook said.