As most of you probably know, even if you turn on Advanced Data Protection on iOS, Apple doesn't E2E encrypt contacts due to legacy CardDAV support. Obviously, this isn't just an Apple issue (Android and standard Google sync have the exact same problem), but iOS is just the ecosystem I'm using right now.
Between cloud exposure and third-party apps always begging for full address book access, I'm trying to clean things up. The goal is to delete people I rarely talk to from my native iOS Contacts app and move them to a separate, encrypted, sandboxed app.
I already use Proton, but Proton Contacts is baked directly into the Proton Mail app. There's no standalone contacts app, so it ends up mixing my actual phone contacts with every random email address I've ever replied to. It gets messy fast.
Right now, my only real workaround is saving them as Identities / Secure Notes in Bitwarden or in an encrypted notes app, but I'd prefer an actual dedicated contacts manager if one exists.
Does anyone know of a solid, privacy-focused standalone contacts app on iOS that keeps its own encrypted database rather than just syncing everything back into the native Apple Contacts pool? What is everyone else doing to handle this?