jz, Have you heard of https://Simplex.chat? 💬
I am torn between on one hand my usual attitude of not recommending any technology for communication of sensitive data as they usually all suck, and mostly depend on golden-prison user-hostile environments like Android or iOS;
and on the other hand my enthusiasm for the underlying principles of Simplex.chat as a young piece of software with very promising and forward thinking ideas (reminding somehow of pond, for those who knew of/used it):
1/9