What is Bitchat?

Bitchat isn’t your typical messaging app. Launched in July 2025 by Jack Dorsey, the co-founder of Twitter (now X), it takes a very different approach to how people communicate. Unlike apps that depend on the internet, phone numbers, or big company servers, Bitchat works completely off the grid.

Instead of sending messages through the internet, Bitchat connects phones directly using Bluetooth. That means it can still work during a network outage, in remote areas with no signal, or even in places where the internet is blocked. Messages travel from one device to another, creating a local, offline network that doesn’t rely on anything external to function.

Right now, it’s still in the testing phase and limited to 10,000 users through Apple’s TestFlight for iPhones. Bitchat, in its current beta form, is strictly text-based, so no images and videos and all those crazy stickers. It’s not a polished app yet—Dorsey created it as a side project, with no outside funding or official price tag. It’s open-source, experimental, and completely independent.

For those who like to dig into the tech, Bitchat uses Curve25519 for key exchange and AES-GCM to encrypt messages—both solid, modern standards trusted in the security world.

Other Bluetooth-based chat apps have popped up before, but many fizzled out due to weak security or poor performance. Bitchat is trying to avoid those mistakes. With strong encryption, no sign-ups, and disappearing messages by default, it’s designed for people who want to stay connected without giving up their privacy.

What are its Key Features?

• No Internet Needed: Bitchat uses Bluetooth Low Energy (BLE) to create a "mesh network." That means phones nearby (within ~30 meters) can pass messages to each other—even if no one is online. Messages can “hop” from phone to phone to reach someone far away.
  
  

• No Account Required: You don’t need a phone number, email, or to sign up. It’s completely anonymous.
  
  

• Fully Encrypted: Every message is scrambled using strong encryption so no one can read it except the person it's meant for. Messages are end-to-end encrypted and stored only on user devices.
  
  

• Disappearing Messages: By default, messages disappear after 12 hours, making conversations more private. You can save favorites permanently.
  
  

• No Central Server: Messages go straight from one phone to another. There’s no company storing your messages on their servers.
  
  

• Group Chats and Mentions: You can create chat “rooms” for group conversations. These can have passwords and include mentions using @handles.
  
  

• Offline Message Delivery: If someone is temporarily offline, the app will store the message and send it when their device reconnects to the mesh.

Are There Similar Apps?

Yes, some apps in the past have tried similar things:

• Bridgefy: A Bluetooth-based messaging app used during protests in places like Hong Kong. However, it had serious security flaws.
  
  

• Briar: A secure messaging app using Bluetooth, WiFi, or Tor—but more complex and Android-only.
  
  

• FireChat: One of the first offline messaging apps, popular during the 2014 Hong Kong protests. It was eventually discontinued.

Concerns, Concerns, and More Concerns

Still, Bitchat raises several important questions. Its lack of user identification—no phone numbers, emails, or accounts—makes it nearly impossible to moderate or trace malicious activity. This could potentially open the door to misuse by bad actors.

Some security experts have also voiced concerns about relying solely on Bluetooth mesh networks, which, while innovative, can be limited in range, unstable in motion, and vulnerable to traffic analysis if not implemented carefully. Since Bitchat is still in beta with only 10,000 users, its real-world performance at scale remains unproven.

Critics also point out that extreme decentralization, while great for privacy, can make it difficult to implement features like spam control, abuse reporting, or data backup. There is no recovery if you lose your device—your chats disappear with it.

While the use of Curve25519 and AES-GCM offers strong encryption, the project’s open-source nature means it will need continuous scrutiny from the security community to stay trusted.

With no current valuation, investors, or long-term roadmap publicly disclosed, it's still unclear whether Bitchat will evolve into a full-fledged platform or remain a niche tool for the privacy-conscious.

Conclusion

In a world increasingly shaped by surveillance, censorship, and centralized control, Bitchat is a radical reimagining of how we stay connected. Whether it becomes a foundational communication tool or simply a spark for the next wave of secure, decentralized apps, one thing is clear: it challenges the status quo. And that, in itself, makes it worth watching.

Would you use Bitchat?

Cover Image Source: GitHub/Express Photo