Something I'm forced to use because a few people, for some reason - will only ever try reaching out to me via this app. Every time i'm greated by it's slugish interface it spams me demanding that I sync my contacts. The features implimented that notify the sender the every action of the correspondent are simply a terrible and unhealthy way to establish communication. The message self-destruct sequence also sets it far below the standards of any practical means of messaging.