Your private life deserves the same encryption your work does.
Family logistics, medical records, financial planning, journal entries, sensitive correspondence, conversations you'd want to disappear after a week. The parts of your life that benefit from a workspace tool — without the parts that read everything you type.
What you get
Same encryption stack as the enterprise tier
No second-class personal plan. The cryptography that protects a law firm's matter notes is the same cryptography that protects your therapy notes, your divorce paperwork, your inheritance plan.
Encrypted messaging to anyone with an email
Send a sensitive message to family, a doctor, or a financial advisor — even if they aren't on Koaich. They receive a daily digest with metadata only; the body opens on their device, never on a server.
Per-vault separation for the parts of your life
Health in one vault. Finances in another. Family logistics in a third. Each behind its own encryption boundary, so one compromised credential doesn't open every box.
TTLs on conversations that should expire
Pick a lifetime per message. After it expires, the body is unrecoverable — including from our servers. The discovery footprint of your past shrinks by default.
Recovery you control
Shamir-split secret sharing across your own trusted devices. If you lose one device, you can recover from the others. There's no vendor-side reset for anyone to socially engineer.
The underlying cryptography
Every claim above is grounded in a specific primitive. Not marketing.
- →Same L1/L2/L3 vault hierarchy as every other tier
- →Shamir's Secret Sharing across the user's own devices for recovery
- →WebAuthn passkeys on the web tier — the key never leaves your authenticator
- →MLS for group rooms (family, friends, partners)
Get on the waitlist.
We're onboarding personal use first. Read the architecture if you want detail.