Hmmm that I'm not so sure, I think the app uses giftwrapped dms so it would be good if both parties were using it
nostr:npub10td4yrp6cl9kmjp9x5yd7r8pm96a5j07lk5mtj2kw39qf8frpt8qm9x2wl?
Discussion
coracle & amethyst also support giftwrapped dms, which are compatible with 0xchat