Other apps may make claims about 'military grade' security but, without publicly auditable source code and verifiable end-to-end encryption, you cannot be truly safe.
ChatSecure is a free and open source messaging app that features OTR and OMEMO encryption over XMPP.
Unlike other apps that keep you stuck in their walled garden, ChatSecure is fully interoperable with other clients that support OTR, OMEMO and XMPP.
ChatSecure only uses well-known open source cryptographic libraries to keep your conversations private.
Subscribe to ChatSecure to help make developing free and open source privacy tools sustainable.