Spectr is a peer-to-peer encrypted messaging platform designed for maximum data minimisation.
Messages are encrypted on your device before they leave it. Only the recipient holds the key required to decrypt them. Spectr servers cannot decrypt message content.
Encrypted message data may pass through relay infrastructure while devices are offline, but it remains unreadable ciphertext. No readable message content is stored server-side.
Messages exist in readable form only on the sender’s and recipient’s devices.
When a message expires, the decryption key is permanently destroyed on both devices. The remaining ciphertext becomes mathematically unreadable.
Spectr reduces trust to mathematics.
Messages are encrypted end-to-end before transmission. Only the communicating devices can decrypt them.
Encrypted messages may be temporarily relayed while recipients are offline, but servers cannot decrypt message content.
Messages are stored locally on devices for the time period chosen by the user.
When a message expires, the decryption key is destroyed. The encrypted data becomes permanently unreadable.
Users can trigger remote deletion of their account and/or chats, removing accessible data from devices.
A local instant wipe deletes messages, keys, contacts, and account data from the device.
Sign up with a nickname and password. No email or phone number required.
Subscriptions can be paid using supported cryptocurrencies without personal billing information.
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Who
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Why
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Journalists & Sources
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Reduced communication footprint
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Lawyers & Clients
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Strong confidentiality controls
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Executives & Boards
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Sensitive strategic discussions
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Activists & NGOs
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High-risk environment communication
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Healthcare Professionals
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Minimise stored communication data
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Crypto & Web3
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Anonymous registration + crypto payment
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Traders & Investors
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Controlled discussion expiry
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Individuals
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Private conversations by default
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(not all chats)
Limited
Limited
Limited
Limited
(secret chats)
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Spectr
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End-to-end encrypted by default
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No email/phone required
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Anonymous crypto payment
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User-controlled expiry
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Remote detonation
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Servers can't read message content
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Signal
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|---|---|
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End-to-end encrypted by default
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No email/phone required
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Anonymous crypto payment
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User-controlled expiry
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Limited
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Remote detonation
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Servers can't read message content
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Telegram
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|---|---|
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End-to-end encrypted by default
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(not all chats)
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No email/phone required
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Anonymous crypto payment
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User-controlled expiry
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Limited
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Remote detonation
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Servers can't read message content
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(secret chats)
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WhatsApp
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|---|---|
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End-to-end encrypted by default
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No email/phone required
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Anonymous crypto payment
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User-controlled expiry
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Limited
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Remote detonation
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Servers can't read message content
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iMessage
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|---|---|
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End-to-end encrypted by default
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No email/phone required
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Anonymous crypto payment
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User-controlled expiry
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Limited
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Remote detonation
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Servers can't read message content
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