A new Discord policy removes NSFW servers from the iPhone and iPad apps in order to comply with an unidentified Apple policy.
On Tuesday, Discord announced that it would begin classifying servers based on content, specifically NSFW content. Not all NSFW content is in danger, however, and only applies to servers that focus on NSFW content only.
The company isn't providing much insight into the issue. According to
Mashable, a spokesperson simply stated that the change was "to comply with Apple's policies." Which policy and why is not clear.
One possible reason is the app's age rating. On March 22, Discord announced that it had to update its age rating from 12+ to 17+ upon Apple's request. This means that any minor with an Apple ID would not be able to download the Discord app if parental controls were on.