dombili

From 0 to 100, it would be a -3.

That's such a Popovich-esque way to answer the question.

[deleted]

I know this wasn't your question, but some general rule of thumb about secure messaging apps:

• Don't trust anyone, including (and sometimes especially) the people behind the app. This is the case with BitTorrent. You shouldn't use their products. They have a terrible track record in terms of security and user experience.
• Do not use proprietary software. I'm against proprietary software in general and try to avoid it whenever I can but it's an awful idea to use self-claimed secure tools that aren't open source. This isn't to say proprietary software can't be secure because it definitely can be, but with open source projects you basically trust in the code and the community who's testing the code and not just some guy behind a desk working for a corporation.
• Check whether the app itself and/or its protocols (assuming they're using their own protocol) have been audited for security issues.

That's about it. /u/SuddenlySnowden's suggestions are spot on. (It's almost like he knows what he's talking about.) Open WhisperSystems (Maker of Signal, RedPhone and TextSecure) is one of the shining examples when it comes to building secure messaging apps.