Block CEO and Twitter co-founder Jack Dorsey has unveiled a new experimental messaging app called Bitchat, which allows users to communicate without Wi-Fi or cellular service by using Bluetooth mesh networking.
Dorsey shared the news in a post on X, revealing that he developed the app over the weekend.
Bitchat is designed to work in areas with limited or no internet connectivity, such as crowded events or remote locations. The app uses peer-to-peer Bluetooth to send encrypted messages, typically within a 100-meter range, but Dorsey claims Bitchat can extend up to 300 meters (984 feet) by relaying messages through nearby devices.
my weekend project to learn about bluetooth mesh networks, relays and store and forward models, message encryption models, and a few other things.
— jack (@jack) July 6, 2025
bitchat: bluetooth mesh chat…IRC vibes.
TestFlight: https://t.co/P5zRRX0TB3
GitHub: https://t.co/Yphb3Izm0P pic.twitter.com/yxZxiMfMH2
Apps like Bitchat are not new, but they’ve proven powerful in real-world scenarios. One of the most well-known alternatives, Bridgefy, gained attention during the Hong Kong pro-democracy protests for its ability to bypass government surveillance and function entirely offline. Notably, Bridgefy is partially funded by Twitter co-founder Biz Stone, adding an interesting twist to Dorsey’s latest project.
Dorsey has long championed decentralized technology, including Bitcoin and projects like Bluesky, which he originally helped launch while leading Twitter. Although he is no longer involved with Bluesky, Bitchat aligns with his broader vision of building resilient, censorship-resistant communication tools.
The Bitchat beta was launched via Apple’s TestFlight, but the test program has already reached its 10,000-user limit. According to Dorsey, the app is currently under review before it can be released to the public.
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As interest in offline and decentralized communication grows, Bitchat could signal a new wave of peer-to-peer apps aimed at privacy and digital independence.





