Bello semplice riservato. Sicuramente svizzero.
Ecco perche' usarlo.,
Volete cercarmi ? Buon ascolto

Caratteristiche ? "la crittografia che cancella dai server i messaggi immediatamente dopo essere stati consegnati ai destinatari" Passa quindi tutto tramite un server. Io mi chiedo come faccia Signala consegnare messaggi ad un device quando lo si riapre. Mah.

v. https://www.utopiathesoftware.com/blog-post/esercito-svizzero-vieta-whatsapp-militari

Dal sito:

Pay once, chat forever. No collection of user data. Open Source.

Thanks to state-of-the-art end-to-end encryption, no one other than the intended recipient can read transmitted messages, not even Threema as the service operator. It’s not required to provide any personal data whatsoever: If so desired, Threema can be used completely anonymously, i.e., without disclosing one’s phone number or email address. Threema was built from the ground up with data protection and privacy in mind (Privacy by Design), which is why only as little metadata as possible is generated when using the service.

Threema is 100% Swiss Made, hosts its own servers in Switzerland, and, unlike US services (which are subject to the CLOUD Act, for example), it is fully GDPR-compliant.