Bitchat App: The Chat App That Works without Internet

You are sitting at a concert or on a plane. You really want to send a message to a friend who is right next to you.. You have no signal. This is a problem. A new app called Bitchat is trying to fix this problem.

Bitchat is an app that you can use to chat with your friends. Bitchat was made by Jack Dorsey, who's the co-founder of Twitter. The thing, about Bitchat is that it does not need the internet to work. Bitchat sends messages from one phone to another phone using Bluetooth. In this article you will learn about Bitchat. You will learn what Bitchat is. You will learn how Bitchat works. You will learn what Bitchat can do. You will also learn about the risks of using Bitchat so you know what to expect before you try Bitchat.

What Is Bitchat?

Bitchat is a messaging app that lets nearby phones talk to each other over Bluetooth with no internet no phone number and no email address needed. Jack Dorsey built Bitchat as a peer-to-peer messaging app that works entirely over Bluetooth mesh networks with no internet, central servers, phone numbers or emails required.

The word "mesh" is important here. In a mesh network each phone acts like a relay station. As users move through space their phones form local Bluetooth clusters and pass messages from device to device allowing them to reach people beyond the normal Bluetooth range even without Wi-Fi or cell service. So even though a single Bluetooth connection only reaches a distance a chain of Bitchat users can pass a message much farther hop by hop.

Dorsey says he coded the version of the app over the course of one weekend, in early July 2025. He later put the project on GitHub as open-source software through a development group called "and Other Stuff."

Why Is It Important?

Bitchat matters because it offers a way to talk to people when normal networks fail or are unavailable. This can happen during:

Natural disasters, when phone towers go down.
Big crowds, like concerts or festivals, when networks get overloaded.
Travel, such as flights or subways, where there is no signal.
Situations where governments block internet access.

Like Bluetooth-based apps used during Hong Kong's 2019 protests, Bitchat is designed to keep working even when the internet is blocked, offering a way to stay connected during outages, shutdowns, or surveillance. This is why some people call it a "censorship-resistant" messaging tool.

Key Features

Bitchat comes with a simple but useful set of features:

No sign-up needed. There is no log-in system. You are taken straight to a message box, and you simply set a display name that can be changed anytime.
End-to-end encryption. The app offers end-to-end encryption and, because it works over Bluetooth, does not need an internet connection.
Group chats called "rooms." Bitchat supports optional group chats, or "rooms," which can be named with hashtags and protected by passwords.
Store and forward. The app can hold on to messages and deliver them later to users who are temporarily offline.
Bridge devices. Certain "bridge" devices connect overlapping Bluetooth clusters, which helps the mesh network reach across greater distances.
Panic mode. A triple-tap "Panic Mode" feature lets you instantly delete all your Bitchat data from your device.
Extended range. While normal Bluetooth messaging apps usually work at a range of around 100 meters, Dorsey says Bitchat can relay messages through peers to reach up to about 300 meters, or 984 feet.

Benefits

Using Bitchat has a few clear advantages over regular chat apps:

Works without the internet. You do not need Wi-Fi or mobile data.
No personal data needed to sign up. Unlike apps such as WhatsApp and Messenger, Bitchat has no accounts, no identifiers, and does not collect user data.
Good for emergencies and remote areas. It can help you stay in touch when normal networks are down.
Free to use. There is no subscription fee.
Simple design. The app has a plain, easy-to-use text interface, similar to old-school chat rooms.

Requirements

To use Bitchat, you generally need:

A smartphone with Bluetooth support (iPhone, iPad, Mac, or Apple Vision Pro for the official app; an Android version is also shared on GitHub).
Bluetooth turned on in your phone settings.
At least one other nearby person who also has Bitchat installed and running, since messages only travel between devices that are within range of each other.

Free or Paid?

Bitchat is completely free to download and use. It is described as a free app, and there are no fees to send messages. Since there are no accounts or servers, there is nothing to subscribe to. This also means there are no ads inside the app itself, based on how it is currently built.

How to Use Bitchat — Step-by-Step Guide

Download the app. The app is available on the iOS App Store, while an Android version can be found on GitHub.
Open the app. You do not need to create an account.
Set a display name. Choose any name you like. You can change it later.
Turn on Bluetooth on your phone if it is not already on.
Wait for nearby users. If someone else nearby has Bitchat open, you will start to see their messages appear.
Join or create a room. You can join a group chat, called a "room," which may be protected with a password.
Send your message. Type your message and send it. It will travel through the Bluetooth mesh to reach the intended device.
Use Panic Mode if needed. Triple-tap the screen to instantly wipe your local Bitchat data.

Pros & Cons

Pros	Cons
Works with no internet or mobile data	Short range, since it depends on nearby devices
No sign-up, no phone number, no email needed	Independent security researchers have found serious bugs
Free to download and use	No forward secrecy, so old messages could be at risk if a key is exposed
Useful during outages, disasters, or blocked networks	Still an early, experimental project without full outside security audits
Simple, distraction-free design	Needs other nearby users with the app to be useful

A Note on Security

Bitchat is still a new and experimental app, and independent security researchers have raised real concerns. After researchers pointed out problems, Dorsey added a warning to the app's page stating that it may contain vulnerabilities and does not necessarily meet its stated security goals.

Some of the issues that researchers have reported include:

The app has used a static public key during Bluetooth communication, which stays the same across sessions unless it is manually reset, making it possible to track a user's device over time.
Bitchat has lacked forward secrecy, meaning that if an attacker gets access to encryption keys, they could potentially decrypt older messages as well.
A security review found memory-safety and input-validation flaws in the app's protocol, including a buffer overflow issue in signature parsing.

Because of this, treat Bitchat as an experimental tool rather than a fully proven, audited secure messenger. If you are sending highly sensitive information, it is safer to rely on well-established, independently audited apps until Bitchat's security record improves.

How Bitchat Compares to Other Apps

Bitchat is not the first app of its kind. Bluetooth mesh messaging has been around for over a decade, and a few other apps use a similar idea.

Bridgefy is one of the most well-known Bluetooth mesh apps. It was used during pro-democracy protests in Hong Kong because it could work without the internet, which made it harder for authorities to detect and block. Bridgefy has over 12 million users and is funded in part by another Twitter co-founder, Biz Stone.
Briar is a full messaging app that also supports offline communication, though it is currently limited to Android.
FireChat was an early Bluetooth mesh app from 2014. It faded over time partly because of weak security in its "open" chat rooms, which led to spam and data leaks.

Compared to these, Bitchat's main selling points are its simple design, its no-account approach, and the attention it has received because of Dorsey's reputation. However, it is newer and less tested than some of its rivals, which is an important point to keep in mind.

Who Should Try Bitchat?

Bitchat is best suited for:

Travelers who want a backup way to talk to companions when there is no signal.
Event-goers at festivals, conferences, or sports events where networks get crowded.
Outdoor enthusiasts on hikes or camping trips, away from cell towers.
Curious tech users who want to try an early, open-source project.

It is less suited for people who need a fully mature, independently audited app for sensitive business or personal conversations. For that kind of use, more established encrypted apps with a longer security track record are a safer choice for now.

Frequently Asked Questions (FAQs)

Is Bitchat free? Yes, Bitchat is free to download and use, with no subscription fees.

Does Bitchat need the internet? No. Bitchat does not require internet access or mobile data. Instead, it runs off Bluetooth.

Who made Bitchat? Bitchat was created by Jack Dorsey, the co-founder of Twitter and CEO of Block.

How far can Bitchat messages travel? A single Bluetooth link usually reaches around 100 meters, but Dorsey says Bitchat can relay messages between peers to extend the range to about 300 meters, or 984 feet.

Is Bitchat safe to use? Bitchat uses encryption, but security researchers have found real weaknesses in the app, and Dorsey himself has warned that it may not fully meet its stated security goals. It is best treated as an experimental app for now.

Is Bitchat available on Android? An Android version of Bitchat is shared on GitHub, alongside the official iOS App Store release.

What is Panic Mode in Bitchat? Panic Mode is a feature that lets you delete all your Bitchat data with a triple tap on the screen.

Final Verdict

Bitchat is a bold, interesting experiment in messaging without the internet. It brings back a simple idea, sending a message straight from one phone to another, and gives it a modern, encrypted design. For situations like festivals, hiking trips, flights, or emergencies, it can be genuinely useful.

At the same time, it is a young project. Independent researchers have found real security gaps, and the app itself carries a warning about its own limits. If you want to try something new and are comfortable using early-stage software, Bitchat is worth exploring. If you need guaranteed, audited security for sensitive conversations, it is wise to wait and watch how the project matures.

Short Disclaimer

This article is for general information only. Bitchat is an actively changing, experimental app, and its features, security status, and availability may change over time. Please check the official Bitchat sources below and verify current details before downloading or relying on the app.

Official Sources & References

Bitchat official GitHub repository and white paper: github.com/permissionlesstech/bitchat
TechCrunch: "Jack Dorsey working on Bluetooth messaging app, Bitchat"
TechCrunch: "Jack Dorsey's Bluetooth messaging app Bitchat now on App Store"
CNBC: "Jack Dorsey launches a WhatsApp messaging rival built on Bluetooth"
9to5Mac: "bitchat mesh, Jack Dorsey's messaging app debuts on the App Store"