Darkup Encrypted Messenger

About Darkup Encrypted Messenger

Why do you need to hand over your phone number just to send a message?

Darkup is an encrypted messenger built for people who would rather not pay for a private conversation with their identity. No phone number. No email address. No account.

YOUR IDENTITY IS NOT A PHONE NUMBER
On Darkup, your identity is a cryptographic key pair generated on your device. It is tied to no carrier, no directory, no mailbox. It is locked by a hardware security key you keep with you.

ENCRYPTED MESSAGING AND CALLS
- End-to-end encrypted text messages
- Disappearing photos and videos
- Disappearing voice messages
- Encrypted voice and video calls
- Read receipts
- Location and route sharing
- Interface available in 11 languages

THE PHYSICAL KEY
Darkup uses a hardware security key (NFC or USB-C) to lock your identity. You decide, action by action, what requires the key: opening the app, reading a message, placing an encrypted call. Without the key, the identity does not open.

IN-PERSON PAIRING
You cannot find anyone on Darkup by searching. You add a contact by scanning their QR code face to face, then reading the security fingerprint aloud to confirm it. Darkup is not a dating app and not a random stranger chat.

ENCRYPTION
End-to-end encryption, Double Ratchet, forward secrecy, sealed sender, signed call signaling. Private keys never leave your device.

READ THIS BEFORE INSTALLING
Darkup offers no backup and no restore. That is a design decision: a recovery path would also be a way in. If you lose your security key, your identity and your conversations are gone for good. No one, including us, can bring them back.

WHAT DARKUP DOES NOT DO
No ads. No profiling. No data resale. No phone number requested. No email address requested.

REQUIREMENTS
A compatible hardware security key is required to create a Darkup identity. Details and availability at darkup.io.

SUBSCRIPTION
Access to the Darkup infrastructure that carries your encrypted messages and calls runs on a subscription purchased in the app. Your identity is yours: it is generated on your device and depends on no subscription.

Encrypted messaging and encrypted calls without a phone number: darkup.io