So it is still a messenger or a utility for a messenger?
And the coins will be used for encryption-I understand correctly?
an interesting concept -I have not heard of such

It's a decentralized communication application as far as I understood from the ANN thread. This is a common move for platforms these days to move towards decentralization like in the case of Sylo.
Yeah, the app is pretty cool and easy to use.
Send cryptos and message your friends. Crypto cool version of Square Cash and Stripe