In private beta β€” launching soon

Your secrets delivered
only when it matters

End-to-end encrypted dead-man's switch. Protect sensitive information and ensure it reaches the right people β€” automatically, securely, on your terms.

Built for people who plan ahead

Whether it's passwords, legal documents, final messages, or business continuity β€” Etergis ensures nothing is lost.

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Zero-Knowledge Encryption

Your secrets are encrypted on your device before they ever leave it. We can't read them. No one can β€” except the people you choose.

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Dead-Man's Switch

Set a countdown. Check in regularly to keep it running. If you stop checking in, your secrets are delivered to your chosen recipients.

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Shamir Secret Sharing

Your encryption keys are split into shares. No single point of failure. Requires a threshold of shares to reconstruct β€” mathematically proven security.

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Recipient Portal

Recipients don't need an account. They receive a secure link and enter a passphrase you set. Simple, respectful, private.

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Web & Mobile

Check in from anywhere. Available on iOS, Android, and web. Push notifications remind you before your countdown expires.

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Attachments & Documents

Attach files, PDFs, images, or any document to your secrets. Everything is encrypted with the same zero-knowledge architecture.

How it works

Three steps to protect what matters most.

1

Create & encrypt your secrets

Write messages, upload documents, set passphrases for recipients. Everything is encrypted on your device with AES-256-GCM before upload.

2

Set your countdown & check in

Choose how long your dead-man's switch runs β€” 24 hours to 30 days. Check in regularly via the app. One tap resets the timer.

3

Secrets are delivered if you don't

If the countdown expires, recipients are notified with a secure link. They enter the passphrase you set and access their package. No account required.

Security you can verify

We don't ask you to trust us. We built it so you don't have to.

AES-256
Military-grade encryption
E2E
Client-side encryption
SSS
Shamir Secret Sharing
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Secrets we can read

Ready to secure your legacy?

Join the private beta. Be among the first to protect what matters.

Join the Waitlist