End-to-end encrypted conversations that are simple, fast, and designed to keep your data yours. No ads, no tracking, no compromise.
A full-featured messenger with consistent end-to-end encryption.
Every message is encrypted before it leaves your device. Only you and your recipient can read it.
Coordinate with friends, family, or teams with the same strong encryption as direct messages.
Send photos, videos, and documents. All attachments are encrypted end-to-end.
Set a timer for messages to automatically delete after they've been read.
No contact uploads, no message storage on our servers, minimal metadata by design.
Available on iOS and Android. Message anyone, from any device.
Lumero uses the Signal Protocol — the same proven standard trusted by security researchers worldwide.
Start a conversation instantly, even if the recipient is offline. Keys are established automatically.
Every message gets its own encryption key through a continuously rotating ratchet.
Past messages can't be decrypted retroactively, even if keys are later compromised.
The protocol automatically recovers and re-secures itself after any disruption.
We believe everyone deserves a space for honest, private conversation.
Your conversations never exist in a form we can access. No backdoor, no master key, no exceptions.
No advertising, no data mining, no profiling. Lumero exists to serve you, not to monetize your attention.
Compare safety numbers with your contacts to verify your conversations are truly private.