Jack Dorsey’s Bitchat: Offline Messaging App Launch Using Bluetooth & Wi-Fi, No Internet Needed

In July 2025, Jack Dorsey, co‑founder of Twitter (now X) and CEO of Block, introduced Bitchat, a peer‑to‑peer messaging app that works entirely without the internet. Unlike conventional messaging platforms, Bitchat requires no Wi‑Fi, mobile data, or central servers.

The app relies on Bluetooth Low Energy (BLE) mesh networking. Smartphones running Bitchat form local clusters via Bluetooth, relaying messages from one device to another as long as a chain of connected devices exists. This allows users to communicate even beyond direct Bluetooth range, effectively extending the reach of messages through the mesh network.

Bitchat includes end-to-end encryption and lets users send private direct messages or join topic-based group chats reminiscent of older IRC systems. It requires no personal information—no phone number, email, or account registration—and messages are typically deleted from device memory after delivery, enhancing privacy and security.

Dorsey announced Bitchat on X, describing it as a way to explore decentralized communication technologies, including mesh networking, relaying, and encrypted messaging. Released initially via TestFlight in beta, the app quickly reached its tester limit, reflecting high early interest.

The offline-first design is intended for resilient communication in scenarios where traditional networks fail or are unavailable, such as natural disasters, network outages, or internet censorship. Its decentralized structure eliminates dependence on servers or infrastructure, making it particularly useful in regions with restricted internet access.

While privacy and encryption are central to Bitchat, it remains experimental. Security researchers note that external audits are still pending, so potential vulnerabilities may exist.

In addition to Bluetooth mesh, Bitchat integrates with the Nostr protocol for hybrid online communication when internet access is available. Future updates aim to improve range and speed through technologies like Wi‑Fi Direct, further enhancing its capabilities.

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