It's a fork from the old Signal (nee TextSecure) code that retains the SMS capability. It was called SMSSecure for a while, but the name was changed to avoid trademark confusion or something.
I use it for my main texting app every day. It's really nice! I think I'd still use it even without the crypto, just because the interface is nice and it doesn't upload my data into anybody's cloud. I only have secure sessions set up with a very small number of my contacts, but oh well. More and more of them are getting on Signal these days, so I do have a secure option for talking to them.
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It sounds like you want Silence https://silence.im/
It's a fork from the old Signal (nee TextSecure) code that retains the SMS capability. It was called SMSSecure for a while, but the name was changed to avoid trademark confusion or something.
I use it for my main texting app every day. It's really nice! I think I'd still use it even without the crypto, just because the interface is nice and it doesn't upload my data into anybody's cloud. I only have secure sessions set up with a very small number of my contacts, but oh well. More and more of them are getting on Signal these days, so I do have a secure option for talking to them.