Comment by mwest

In theory you can use OTR[1] but I've yet to see an easy way to use this from a phone.

I remember IRC very fondly, but I feel it has a lot of baggage that makes it difficult to bring into the modern era.

This blog post (not mine) explains it quite well: https://jlu5.com/blog/im-tired-of-irc-heres-why

[1] https://otr.cypherpunks.ca/