Montana

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About

Anonymous messenger: sealed chats, calls, groups and channels, with no account to begin.

Groups and channels

Groups for the people you talk with and channels for announcements, with a discussion under every post. Owners and administrators invite by link, pin posts, add and remove people and decide who writes in a channel.

Location, only by your hand

Send a place in a chat when you choose. The app never asks for your location otherwise and sends nothing in the background.

Sealed communication

Letters, voice and video calls, photos, videos and files are end-to-end encrypted with post-quantum cryptography: ML-KEM-768 and ML-DSA-65, the NIST standards designed to withstand quantum computers. Nothing readable leaves the devices of the conversation.

No account to begin

Your identity is a 24-word phrase generated on your phone: no phone number, e-mail or account is needed, now or later.

Your history stays yours

Conversations live on your devices. An optional daily copy goes only to your own iCloud, sealed with the key your 24 words open. No advertising, no trackers, no third-party analytics.