Required XMPP,Swift,Realm Database,SQLite,Phone freelancer for CUSTOMIZE CHATSECURE (XMPP/OMEMO/ZRTP/DTLS) job

We will use the chatsecure app as a base.

The app must have the following features:
auto destroy messages with timer
stealthmode
vault
secure backup
password protected
... And more. See app

Things not needed must be removed from the CS app.

In the attachment you will find the way we want to encrypt things locally and some other tech. specs.

Sending messages/pictures/notes/voicememo with omemo-encryption
Calling must have DTLS/ZRTP encryption

we will take care of the server part

the app will NOT published on App Store!

We need the app in a short matter of time. <2 months.

Skills & Expertise Required

XMPP Swift Realm Database SQLite Phone