In multiple tweets, Musk accused Apple of censorship. In one, he wrote, “Apple has also threatened to withhold Twitter from its App Store, but won’t tell us why.”

The Tesla CEO and Twitter’s new owner wrote in another message, “Apple has mostly stopped advertising on Twitter. Do they hate free speech in America?”

Below that post, Musk tweeted: “What’s going on here @tim_cook?”

Apple has not commented on Musk’s charges. However, his stated intentions concerning how he will operate Twitter since he formally acquired the social media platform could run afoul of Apple’s moderating rules. Musk has said that he plans on having few rules in terms of censoring user messages, and he recently unbanned many suspended accounts, including former President Donald Trump’s.

Meanwhile, Cook said in a November 15 interview with CBS News that he believed Twitter would “continue to moderate. I’m counting on them to continue to do that.”

Among Musk’s other messages on the matter was a poll he posted for Twitter users. The survey asks whether they feel Apple “should publish all censorship actions it has taken that affect its customers.”

Musk also brought up a past criticism he’s had of Apple: Namely, the App Store charges a commission of up to 30 percent on paid apps and in-app purchases.

In March, Musk tweeted that “Apple’s store is like having a 30% tax on the Internet. Definitely not ok.”

He asked on Monday if his followers knew that Apple applies a “secret” 30 percent tax on App Store purchases. He followed up by tweeting out a doctored picture that showed a highway sign. One arrow on the sign had “PAY 30%” written on it, while one verging to the right read, “GO TO WAR.”

A car, which was swerving to take the right direction, was labeled as “ELON.”

Musk’s messages resulted in a divided response in the comment sections for his various tweets.

“I’m ready to give up my iPhone for an alternative,” wrote Seth Dillon, the CEO of nature site The Babylon Bee.

On the other side of the debate, health and well-being author Brad Stulberg tweeted that perhaps Apple doesn’t “want to put their money into a platform with a leadership team that, over the last few weeks anyways, has been quite erratic; and with a CEO who is posting Pepe the Frog memes.”

Newsweek reached out to Apple and Musk for comment.

Update 11/28/22 3:30 p.m. ET: This story has been updated to include more information.