I get Keychat is trying to be like the WeChat of Bitcoin and Nostr, but the browser thing doesn't move me and I turn it off. Not a technical criticism, I am just very conservative with my keys. I'd prefer a bunker like Amber and a separate messenger/wallet and browser or even all three separate that work seamlessly with one another.
With what I mentioned about Session, see:
Follow up after response to it: 
Dhole Moments
Don’t Use Session (Signal Fork) - Dhole Moments
Last year, I outlined the specific requirements that an app needs to have in order for me to consider it a Signal competitor. Afterwards, I had sev...
Dhole Moments
Session Round 2 - Dhole Moments
Last week, I wrote a blog post succinctly titled, Don’t Use Session. Two interesting things have happened since I published that blog: A few ...