Apple Inc has suspended Parler from its app store, saying the social networking service had not taken adequate measures to prevent the spread of posts inciting violence.
Parler is a social network to which many supporters of President Donald Trump have migrated after being banned from services including Twitter, a platform that permanently suspended Trump's account this week.
Apple had given the service 24 hours to submit a detailed moderation plan, pointing to participants using the service to coordinate Wednesday's siege of the US Capitol.
However it appears the changes Parler proposed did not go far enough for Apple.
"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," Apple said in a statement to Forbes.
"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."
Parler has also been suspended from Alphabet Inc's Google Play store until the app adds more robust content moderation.
In a statement, Google cited continued posts in the Parler app that seek "to incite ongoing violence in the US".
Google said: "For us to distribute an app through Google Play, we do require that apps implement robust moderation for egregious content. In light of this ongoing and urgent public safety threat, we are suspending the apps listings from the Play Store until it addresses these issues."
Reuters / Newshub.