Ranked in these QuestionsQuestion Ranking
Pro Offers 3 types of encryption
The app claims to be the only communication app that encrypts data in transit, on disk and on screen. Encryption in transit is used to make sure no-one can listen in on your conversations even if the traffic is going through their servers, encryption on disk is used to make sure that even if someone gets ahold of your phone and is capable of extracting your messages from it they won't be able to read them and screen encryption is essentially a lock screen that sets in after a set amount of time used to make prevent "shoulder surfing".
Pro Can send self-destructing messages
Messages can be set to self-destruct after a set time.
Con Many people have difficulty registering the app
Multiple people have reported not being able to receive the activation code required to register the app.
Con Closed source
No way to verify security practices.