ARX: Private Messenger

unus nullus

Nov 4, 2026

223.8 MB
File Size
Security
Everyone
Android 7.0+
Android OS

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About ARX: Private Messenger

Private encrypted messenger with an encrypted vault and global eSIM

ARX: The Private Super App for Secure Communication & Connectivity

ARX is a privacy-first app with end-to-end encrypted messaging, global eSIM data, and an encrypted vault. One app. No phone number or email required — your keys stay on your device.

Private messaging, first

End-to-end encrypted chats, voice, and video powered by advanced cryptographic protocols. Groups, voice notes, files, and live location, private by default. Optional disappearing messages, mutual screenshot consent, and a duress code keep you in full control.

Global eSIM

Get online in 190+ countries with no physical SIM. Buy and manage instant mobile data plans directly inside the app.

ARX Vault

Keep your sensitive notes, files, photos, and login credentials protected on your device with local encryption.

Privacy by design

Your account is secured by unique encryption keys stored locally on your device, with PIN, biometrics, and duress PIN support. We cannot read your end-to-end encrypted messages. See our Privacy Policy for how optional, anonymous analytics help improve the app.

Your messages and your data. In one secure, independent app.

What's new in the latest 4.5.2

Last updated on 2026-11-04

ARX 4.5.2 — meet ARX AI, your private assistant.

• ARX AI runs on your device: ask how ARX works, open screens and change settings just by asking
• Summarize a chat, or type @ai in a chat to ask about it — only you see the answer
• Translate the messages you send, right in the composer
• Send an eSIM you bought straight into a chat
• Review the details of a transfer before you confirm it

Plus tap a reaction to toggle it, more reliable chat backups, and lots of fixes.

Videos and Screenshots