https://techcrunch.com/2021/01/09/apple-suspend-parler-from-app-store/

Apple confirmed that it has suspended the conservative social media app Parler from the App Store, shortly after Google banned it from Google Play. The app, which became a home to Trump supporters and several high-profile conservatives in the days leading up the Capitol riots, had been operating in violation of Apple’s rules.

We have always supported diverse points of view being represented on the App Store, but there is no place on our platform for threats of violence and illegal activity. Parler has not taken adequate measures to address the proliferation of these threats to people’s safety. We have suspended Parler from the App Store until they resolve these issues.