Was should sync and make it happen https://github.com/KoalaSat/samiz
my weekend project to learn more about bluetooth mesh networks, relays, store and forward models, encryption models, and a few other things: https://github.com/jackjackbits/bitchat
nostr-only TestFlight if you want to play with it: https://testflight.apple.com/join/QwkyFq6z
Discussion
How compatible?!?!
Yes, but as I see this works as an isolated client.
Not impossible, but the idea of nostr:nprofile1qqszfrv3m6acxyqy4ghuega2n74rntkrfg9sp4pmse94vul56gnul8cppemhxue69uhkummn9ekx7mp0aljpdg is to take care only of the data transmission layer and let the uset to use its own nostr client/relay.