Privacy-first chat, without the trade-offs
End-to-end encrypted messaging with the rooms, roles, video calls, and file sharing you actually want. Zero-knowledge by design.
Download Cloak Chat
Cloak is currently in closed beta. To create an account, you will need an invite code. If you don't have one yet, join our waitlist to be notified when spots open up.
Feature rich, privacy focused
Every last message, secured by design
Cloak offers a range of familiar features with security and privacy built in from the start.
- Secure Messaging
- Your conversations are protected by end-to-end encryption, with encryption keys that remain exclusively on your device – ensuring your privacy is never compromised, even by our servers.
- Password Secured Rooms
- Lock down rooms even further by requiring a password to join. Never worry about messages getting into the wrong hands.
- File Sharing
- Share and manage files seamlessly and securely. Ensure your shared documents are protected with our vault storage system.
- Create and Join Rooms
- Effortlessly create and join chat rooms for group conversations, ensuring organized and seamless communication.
Security deep dive
How Cloak protects your data
Cloak doesn't just promise privacy — we engineer it into every layer. From the cryptographic protocols to local key storage, here is exactly how your data stays yours.
End-to-end encrypted, always
Every message, every call, every file — encrypted on your device before it ever touches the network. The server stores only ciphertext. No backdoors, no exceptions.
Signal Protocol
Trusted by millions, built into Cloak
Cloak uses the Signal Protocol, the same end-to-end encryption standard trusted by Signal, for secure key exchange between users. Curve25519 key pairs and the Double Ratchet Algorithm ensure that every session produces unique encryption keys.
AES-256-GCM Message Encryption
Military-grade cipher, per-message randomness
Every message is encrypted client-side with AES-256-GCM — an authenticated encryption standard used by governments and financial institutions worldwide. Each message gets a unique, cryptographically random initialization vector (IV), so identical messages produce completely different ciphertext. The authentication tag ensures messages cannot be tampered with in transit.
Zero-Knowledge Architecture
We can't read your messages — by design
All encryption and decryption happens entirely on your device. The server only ever sees encrypted blobs — never plaintext. Even Cloak's own infrastructure cannot access your messages, files, or call content. Your data is yours alone.
Per-Conversation Keys
Unique keys for every DM and every room
Each direct message conversation and each server room uses its own unique encryption key derived from Curve25519 key pairs. Room owners can cycle encryption keys at any time, instantly revoking access for removed members and generating fresh keys for the room.
Secret Key Recovery
You hold the master key, not us
At account creation, Cloak generates a 64-character cryptographically random secret key that only you possess. This key encrypts your identity keys with AES-256-GCM before they are backed up to the server. Without your secret key, your identity and message history cannot be recovered — not even by Cloak.
Encrypted Voice & Video
End-to-end encrypted calls, frame by frame
Voice and video calls are protected with end-to-end encryption using the WebRTC Insertable Streams API. Every audio and video frame is encrypted before it leaves your device, ensuring that call content is only accessible to participants — not the server, not intermediaries, not anyone else.
Technical specifications
The cryptographic primitives and transport protocols powering Cloak's security.
- Key Exchange
- Signal Protocol (Curve25519, Double Ratchet)
- Message Cipher
- AES-256-GCM with per-message random IV
- Key Storage
- OS Keychain (macOS Keychain / Windows DPAPI)
- Transport
- HTTP/3 WebTransport over TLS 1.3
- Media Encryption
- WebRTC Insertable Streams (E2EE)
- Identity Backup
- AES-256-GCM encrypted with user-held secret key
Cloak is built on industry-standard, peer-reviewed cryptographic protocols. We don't invent our own crypto — we use the same proven primitives trusted by security researchers, governments, and billions of users worldwide. Your data is protected by math, not promises.
Wait, you can do that?
No compromises, just features
Smile, you're on camera
Video Chat & Screen Sharing
Engage in high-quality video calls. Connect face-to-face while keeping your conversations private, and share your screen securely during video calls.
All your files, one place
File Management
Upload, organize, and share files from a single hub. Track your storage usage, manage sharing permissions, and control who can access your files across users and rooms.
Say more with less
Message Reactions
Enhance your conversations by reacting to messages with a variety of emojis, adding a personal touch to your chats.
Role based permissions
Roles & Groups
Create roles and groups to manage permissions and access levels for members of your rooms.
Why Cloak?
You shouldn't have to choose between privacy and features
Most platforms make you pick one or the other. Cloak was built so you don't have to.
Private, but limited
Some platforms get encryption right, but stop there. No servers, no roles, no screen sharing, no file management. Privacy shouldn’t mean giving up the features you rely on.
- End-to-end encryption
- Rooms & servers
- Roles & permissions
- File management
- Video & screen sharing
- Message reactions
Feature-rich, but exposed
Other platforms have everything you need — rooms, roles, video, bots — but your messages aren’t encrypted. Your data is collected, scanned, and monetized.
- End-to-end encryption
- Rooms & servers
- Roles & permissions
- File management
- Video & screen sharing
- Message reactions
Cloak
Zero-knowledge architecture on top of a full-featured chat experience. Your messages, calls, and files are encrypted before they leave your device. No compromises.
- End-to-end encryption
- Rooms & servers
- Roles & permissions
- File management
- Video & screen sharing
- Message reactions
Why we built Cloak
We were tired of choosing between privacy and the features we actually use.
We wanted to hang out with friends, share files, hop on video calls, and manage communities — all without handing our conversations over to platforms that collect, scan, and monetize them. The private options felt stripped down. The feature-rich ones didn't care about privacy. Nothing fit.
So the two of us started building Cloak: a platform with the features we loved, built on zero-knowledge architecture from day one. The server only ever sees encrypted data. We can't read your messages, and we never will.
Your conversations are yours. That's not a feature — it's the whole point.
Pricing
Privacy to meet any budget
We built Cloak from the ground up with your privacy at its core. Through local encryption keys, your conversations remain secure and accessible only to you and those you choose to communicate with. We will never sell or monetize your data. Cloak operates as a premium service dedicated to protecting your privacy.
Free
Test the waters with Cloak for free! The free plan still has all of the privacy and security you expect, with limited features.
$0/month
- End to end encryption
- Join up to 2 rooms
- Unlimited direct messages
- Attachments up to 10MB
- 1GB of storage
- Connect to voice channels
Basic
Get started with Cloak Basic, offering all the essentials you need to communicate securely and privately.
$6.99/month
- End to end encryption
- Join up to 20 rooms
- Unlimited direct messages
- Choose if and how long direct messages persist
- Attachments up to 50MB
- 10GB of storage
- View 1 1080p 60FPS stream, or 4 720p 30FPS streams
Plus
Most popular
Step up with Cloak Plus for more rooms, larger attachments, and expanded streaming capabilities.
$14.99/month
- End to end encryption
- Join up to 100 rooms
- Unlimited direct messages
- Choose if and how long direct messages persist
- Attachments up to 200MB
- 25GB of storage
- View 2 1080p 60FPS streams, or 10 720p 30FPS streams
Pro
Our pro tier offers all the security and privacy you expect from Cloak — packed with everything Cloak has to offer.
$29.99/month
- End to end encryption
- Join up to 200 rooms
- Unlimited direct messages
- Choose if and how long direct messages persist
- Attachments up to 500MB
- 100GB of storage
- View 5 1080p 60FPS streams, or 22 720p 30FPS streams
Tier features and pricing are not final and subject to change
Cloak Chat is in active development
Join the waitlist and be the first to know when Cloak Chat launches
Frequently asked questions
Have questions? We're here to help. If you can't find what you're looking for, reach out to our support team.
What is Cloak?
Cloak is a privacy-first chat platform with the features you actually want. Create or join rooms with text and voice channels, set up roles and permissions, react to messages, share files, hop on encrypted video calls with background effects, and customize your experience with themes and appearance settings — all protected by end-to-end encryption and zero-knowledge architecture.
How does Cloak protect my privacy?
Cloak uses the Signal Protocol for key exchange and AES-256-GCM to encrypt every message on your device before it reaches the network. The server only ever sees ciphertext — never plaintext. Voice and video calls are also end-to-end encrypted using WebRTC Insertable Streams. Your encryption keys are stored locally on your device, so even we cannot read your messages, files, or calls.
What platforms is Cloak available on?
Cloak is available as a desktop app for Windows, macOS, and Linux, and as a web app at app.cloak.chat. Mobile apps are on the roadmap.
How do group chats and rooms work?
Rooms are encrypted spaces with text and voice channels, just like servers on other platforms. You can create roles with 30+ granular permissions, upload custom emoji, generate invite links with optional expiration, view audit logs, and set AFK timeouts. Room owners can cycle encryption keys at any time. Free users can join up to 2 rooms, while paid tiers support 20–200 rooms.
What are the limitations for voice and video features?
Voice channels have no strict limit on participants. All voice and video is end-to-end encrypted. Free users can connect to voice but cannot watch streams or view webcams. Paid tiers unlock stream viewing — Basic supports 1 1080p 60FPS stream or 4 720p 30FPS streams, Plus supports 2 or 10, and Pro supports 5 or 22.
How much does Cloak cost?
Cloak offers four tiers: a Free plan with up to 2 rooms, 1GB storage, and core privacy features; a Basic plan at $6.99/month with 20 rooms, 10GB storage, and stream viewing; a Plus plan at $14.99/month with 100 rooms, 25GB storage, and expanded streaming; and a Pro plan at $29.99/month with 200 rooms, 100GB storage, and the most streaming capacity. Every plan uses the same end-to-end encryption.
What storage limits and file sharing options are available?
Free users get 1GB of storage with 10MB file uploads. Basic users get 10GB with 50MB uploads, Plus users get 25GB with 200MB uploads, and Pro users get 100GB with 500MB uploads. Cloak includes a file management hub where you can track storage usage by file type, manage per-file sharing permissions for specific users or rooms, and download or delete files from one place.
How long are messages stored?
Paid users (Basic, Plus, and Pro) can choose if and how long their direct messages persist. All messages are stored as encrypted data that can only be decrypted on authorized devices — the server never has access to plaintext.
How do I get started with Cloak?
You can try Cloak right now at app.cloak.chat or download the desktop app for Windows, macOS, or Linux. Start with the free tier and upgrade to Basic, Plus, or Pro anytime for expanded storage, streaming, and more rooms. Join the waitlist to get notified about new features and updates.