Ask HN: I've been used to LibreSignal on CyanogenMod, what can I replace it by?

I use CyanogenMod on my cell phone so I don't have the Google piece of code required by the Signal app, neither can I download it on Android Market.

I've heared about own kernel compilation, why not but I'd prefer a more stable solution -- if I use CyanogenMod, wouldn't have I to recompile it on my own for each and single release?

Do you know about any well-crafted security app which handle both unsecured SMS and a secure protocol?