The S3SH Experience
Zero Sign-Up
No phone numbers, no emails, no accounts. Create sessions instantly with just a username. Your identity remains yours alone.
iPhone-Only Storage
All messages are stored exclusively on your device using secure SQLite database. No cloud servers, no data mining. Your conversations belong to you.
Session-Based Communication
Create unlimited chat sessions with unique codes. Share the code to invite others—no friend lists, no contact syncing required.
Real-Time Messaging
Experience lightning-fast messaging with instant delivery via WebSocket technology. Messages appear the moment they're sent.
Intelligent AI Assistant
Toggle the 'root' AI assistant for brainstorming, creative writing, or quick answers. You control when AI participates in your conversations.
Multi-User Sessions
Invite multiple participants to the same session. See who's online, track active users, and collaborate in real-time.
Native iOS Notifications
Receive instant push alerts for new messages and mentions, even when the app is closed, with full iOS integration powered by Firebase.
Session Management
Organize your conversations with ease. Rename sessions for clarity, delete them when done, and manage multiple chats effortlessly.
Smart Session Metadata
Track message counts, last activity timestamps, and session descriptions. Stay organized without compromising your privacy.
Persistent Local Storage
Access your entire message history offline. All conversations are cached locally, so you can review past chats anytime.
Ephemeral by Design
No permanent records on servers. Session data exists only on participating devices. Uninstall the app, and everything disappears.
Flexible Usernames
Choose any username for each session. Be yourself, or be someone new. No validation, no verification, complete freedom.
Custom Attributes
Extend sessions with custom key-value attributes for enhanced functionality and personalization without exposing personal data.
Optimized Performance
Efficient database operations with indexed queries, migration support, and optimized data structures for smooth, lag-free experience.
Beautifully Simple
Intuitive UI built with Flutter. No learning curve, no complex settings. Just open, create or join, and start chatting.
Complete Data Control
Delete individual sessions with a long-press. All associated messages, metadata, and attributes are permanently erased from your device.
Robust Connectivity
Automatic reconnection, connection state management, and reliable message delivery through persistent WebSocket connections.
Clean Architecture
Built with separation of concerns: dedicated DAOs, repositories, and services. Reliable, maintainable, and built to last.
Claim Your Privacy.
Step into a space where your conversations are truly your own. Download S3SH and experience the new standard of private communication on iPhone.