Apple has removed several parental control apps from its store because of security and privacy concerns.

The New York Times reported on Saturday Apple had removed 11 of the 17 most popular programs that help users restrict features or the amount of time kids spend on devices. It said Apple started cracking down on such software after launching its own Screen Time feature last year, which also lets people set limits on certain iPhone and iPad functions and keep track of children’s usage.

That sparked anti-competitive concerns, as two app makers filed complaints with the European Union, according to the report. But Apple said in a Sunday post on its website it removed the applications because they “put users’ privacy and security at risk.”

Apple said the applications it barred relied on a technology called Mobile Device Management or MDM, meant for enterprises that manage groups of devices for employees. “MDM gives a third party control and access over a device and its most sensitive information including user location, app use, email accounts, camera permissions, and browsing history,” it said. That’s a “clear violation of App Store policies.” The company said it gave the relevant developers 30 days to modify their apps, then removed those that weren’t adjusted.

“Contrary to what The New York Times reported over the weekend, this isn’t a matter of competition. It’s a matter of security,” Apple said in its post.