The Complete Guide to
BatChat (蝙蝠聊天)

BatChat uses end-to-end encryption (RSA + SRP + Double Ratchet protocol) for all messages and calls. Neither BatChat nor any third party can read your conversations. Messages are never stored on servers.

Yes, BatChat is completely free to download and use on Windows, Mac, iOS, and Android. There is a VIP subscription for premium features like cloud backup and custom themes, but core messaging is free.

Unlike Telegram, BatChat encrypts all messages by default (not just in "secret chats"). Compared to Signal, BatChat offers larger group sizes (50K vs 1K), preset secret codes (预设密信), and disappearing messages with flexible timers. See our detailed comparisons for more.

Yes, BatChat is available for Windows 10/11, macOS, iOS, Android, and Web. The desktop app supports all features including secret chat mode, file transfer, and group management.

Secret Chat Mode masks your avatar and name, disables screenshots and forwarding, and is designed for sensitive business or private conversations. It goes beyond standard end-to-end encryption.

This unique BatChat feature lets you set a secret code for specific contacts. Only people who know the password can access your chat history with that contact — adding an extra layer of security.

Yes, BatChat supports end-to-end encrypted file transfers up to TB-level sizes with breakpoint resume. This is significantly larger than WhatsApp's 2GB and Signal's 100MB limits.

Common causes include network issues, firewall/antivirus blocking, VPN interference, outdated app version, or server maintenance. See our troubleshooting guide for step-by-step fixes.