Secure, Anonymous, End-to-End Encrypted Chat
Welcome to Sryptos. Experience true privacy with our anonymous-first, end-to-end encrypted messaging platform. Your data, your control. No one else can read your messages.
Built for Privacy
Sryptos is packed with features designed to protect your identity and communications from everyone, including us.
Anonymous-First Authentication
Join instantly with just a username. No email or phone number required. Link an account later for permanence, if you choose.
End-to-End Encrypted By Default
Using powerful, modern cryptographic libraries (AES-GCM), all your text and files are encrypted on your device. Your conversations are for your eyes only.
Selectable Encryption (E2EE vs Synced AES)
Choose between maximum E2EE security or the convenience of AES-256 encrypted cloud sync for multi-device access. You control the trade-offs for each chat.
Encrypted Google Drive Backups
Opt-in to back up your encrypted message history to your own Google Drive. Sryptos never has access to your backup files or your Google account.
Progressive Web App (PWA)
Install Sryptos on your desktop or mobile device for a native-app-like experience, including offline access and better performance.
User-Controlled Data
Your data is yours. All chat content is stored on your device, and you have full control over your storage and data permissions.
Auto-Deletion & Ephemeral Media
Your messages, images, and voice notes auto-delete after 30 days by default. You can customize or manually erase them anytime.
Guest Accounts with Instant Access
Start chatting instantly as a Guest — no registration needed. Upgrade to a permanent or linked account whenever you choose.
No Tracking or Ads
Sryptos is built to be a sanctuary for your conversations. We don't use tracking cookies, analytics, or serve ads. Your activity is your own.
How Sryptos Keeps You Private
Encryption Happens on Your Device
Before messages leave your phone or browser, they’re encrypted with AES-GCM. Only your recipient’s device can decrypt them.
No Central Storage of Chat History
Messages are stored locally on your device. We never retain readable message data on our servers.
Your Data, Your Rules
Delete, export, or back up your encrypted data anytime — you’re in complete control.
Anonymous by Design — No Phone Number, No Email, No Problem.
Sryptos lets you join the conversation instantly as a Guest. No signup, no tracking, no identity required. Just create a username and start chatting securely.
A Modern Chat Experience — Secure and Simple
Built with Next.js, WebRTC, and Web Crypto, Sryptos delivers real-time encrypted messaging that feels as smooth as popular chat apps — without compromising your privacy.
Why Choose Sryptos?
| Feature | Sryptos | Telegram | Signal | |
|---|---|---|---|---|
| Anonymous Login | ||||
| End-to-End Encryption | Secret Chats only | |||
| Selectable Encryption | ||||
| Guest Access | ||||
| Local Storage Only | ||||
| Auto-Delete Media | ||||
| No Metadata Logging |
Unlike traditional messaging platforms, Sryptos never stores message content or metadata. What happens on your device, stays on your device.
Loved by Privacy Advocates
“Finally, a chat app that means it when it says private.”
- Privacy Advocate
“No signups, no spam, no leaks — just pure privacy.”
- Tech Enthusiast
“Guest login is a game-changer for quick, secure conversations.”
- Journalist
Open Technology. Transparent Privacy.
Sryptos is built using open standards and modern frameworks, including:
- Web Crypto API for encryption
- WebRTC for peer-to-peer calls
- Firebase for real-time metadata
- TypeScript & Next.js for reliability and speed
Our commitment to transparency means we will never hide how your data is handled.
View Technical Deep-DiveOpen Source, for a Safer Internet
Sryptos believes in community-driven security. Our core codebase and documentation are open for audit. Developers and researchers are welcome to review, contribute, or suggest improvements.
Explore GitHub RepositoryReady to Experience Real Privacy?
Start chatting now — no registration required.