The App Review Guidelines have been revised to clarify that apps with random or anonymous chat are subject to guideline 1.2 User Generated Content.
https://plumprush.com/dCmnF.z_dFGFNnv-Z/GjUe/ee-m/9qutZjU/lykAPDT/Yn3PNiTlUk0tNEzegptKNNjdcD1fNITaQ/3/OnQu
Translations of the guidelines will be available on Apple’s developer website within a month.
