Comm Messenger is a utility tool available on iPhone that focuses on community-based communication. In Comm, each community is hosted on a user's keyserver, which can be set up on a laptop or in the cloud. The platform ensures user privacy by not hosting key servers. While a keyserver is not mandatory to join a community, it is required to create one, enabling a sophisticated feature set without compromising user privacy.

Comm Messenger structures communities with chat threads resembling nested channels like Discord. Additionally, it supports "sidebars" akin to threads in Slack, initiated in response to a message within a parent thread. Beyond chat features, Comm offers a library of customizable community apps, starting with a Calendar app and promising more in the future.