Like hangouts but with fewer features and an uglier interface. Inability to archive chats makes interface more cluttered. It's also hard to differentiate between messages within a single chat since there is minimal spacing and the only thing that differentiates messages is the speaker avatar. Adding e.g. message shading to differentiate chat members (like hangouts does ..) would improve readability. EDIT: six months later and nothing is improved. Is this Allo all over again?