01
Hey.
Your conversations should belong to you. Only you.
Communicationwithout an audience.
FC21 is identity-minimized infrastructure for private conversations — no email, no phone number, no public people directory. Invite-only. Honest about platform limits.
01
Zero-PII
No email or phone to create an account.
02
Your devices
Key material stays on the endpoint.
03
Minimal metadata
Invite-only discovery — no public people directory.
The narrative
02
But most conversations don't.
Messages. Metadata. Contacts. Devices. Patterns.
03
Privacy rarely disappears all at once.
It disappears one permission at a time — contacts, metadata, location, conversations, identity.
04
You got used to it.
You shouldn't have to.
PRIVACY-EROSION
One step at a time — not all at once
01
Contacts
Address-book access, friend matching, who-knows-whom graphs.
FC21
Infrastructure need not know.
Zero-PIINo email or phone to create an account.
Your devicesKey material stays on the endpoint.
Minimal metadataInvite-only discovery
Product family
From chat to sovereignty
Connect
Relationships by @handle or usr_ ID — no address-book scraping, no friend matching.
ADR-0021
Groups
Project and team threads with an optional topic. Organizations are context, not a requirement.
ADR-0017
View-once
Covered messages until you choose to open them — a UX control, not screenshot protection.
ADR-0022
Recovery
High-entropy recovery credential (FC21-RCV-…), shown once. No email reset.
ADR-0015
Architecture
Billing ≠ cryptography
FC21 keeps a hard line: a subscription answers “May this organization use the service?” Cryptography answers “Is this identity or message authentic and confidential?” That line is never blurred.
FC21 MobileNative client, local keys, UI
FC21 CoreProtocol boundary, ratchet state
Sovereign NodeRelay, auth, entitlements
FC21 ControlAdmin plane for organizations
Human Factor
People remain the weakest link. Sharing a password or recovery credential, leaving a phone unlocked, shoulder surfing, and phishing sit outside what this product can stop. FC21 does not claim anonymity, and it does not claim network unlinkability (ADR-0015).
FC21 Mobile
On your iPhone — private by design, honest about limits
Identity-minimized messaging for people and organizations. No email. No phone number. No feed.
01
Conversations
Direct threads by default. Groups and projects when you need them. Discovery stays invite-only — no public people directory.
02
Connect
Reach someone by @handle or usr_ ID. Explicit requests. No address-book scraping, no stranger matching.
03
Privacy controls
Optional app lock, App Switcher cover, recovery without email. Clear limits: no anonymity claims, no screenshot-proof promises.
Get the app
This is your communication space.Not ours.
FC21 Mobile for iPhone — invitation-only Internal Testing on TestFlight. Public App Store release coming soon.
Request inviteApp Store — Coming soon