[rollschild]

Between me and my girlfriend we use Signal. But for talking to anyone else I have no choice but use WeChat. I just either don't have the power to persuade others to use a more secure app, or they just don't care, or the cost of switching to another app is too high. It's (relatively) easy to develop an alternative with no censorship and pretty secure. The hard part is to make it popular and avoid getting blocked in China.