Wow, both look interesting

Sphinx Chat is imo very complimentary to Nostr as a V4V media platform, like a lightning Instagram, plus it lets you subscribe to, play, and zap V4V podcasts. But LN isn't just integrated into Sphinx, it actually uses Lightning to transmit messages, and you have to run it on top of your own node or a friend's node so it's properly decentralised. Tor is built in as well so any home node without open firewalls and port forwarding can run the necessary software. Very clever Bitcoin native tech.