Can Bitchat Replace WhatsApp?

Try It Now

• TestFlight (iOS):https://testflight.apple.com/join/QwkyFq6z

• GitHub Source Code:https://github.com/jackjackbits/bitchat

What Is Bitchat? Jack Explains His Weekend Project

Twitter co-founder Jack recently shared on his official handle about his weekend coding project called Bitchat. According to him, this app is designed to explore Bluetooth mesh networks, message relays, store and forward models, and encryption techniques.

A screenshot of a social media post by "jack" (@jack), introducing bit chat as a weekend project to explore Bluetooth mesh networks, encryption, and store-and-forward models, giving insights into the app's core concepts.

Jack described Bitchat as a Bluetooth mesh chat app with IRC vibes, highlighting its peer-to-peer communication without needing internet or servers. This means you can chat securely even when there is no network coverage.

This project shows how simple, secure, and decentralized messaging can be done using Bluetooth technology. It also reflects Jack’s interest in privacy-focused communication beyond traditional internet-based apps.

Why is Bitchat special?

• No internet needed works via Bluetooth mesh networking

• No SIM card or phone number required

• End-to-end encrypted messaging

• Completely decentralized no servers or central authority

• Works in emergencies, protests, remote areas, and campuses

Top Features of Bitchat

1. Bluetooth Mesh ChatMessages hop from phone to phone. Even if you're not directly connected, messages can still reach you.

2. End-to-End EncryptionUses AES-256 and X25519 for secure messages.

3. Store & ForwardMessages are saved temporarily and delivered when the user comes back online.

4. IRC-style CommandsUse commands like /j #channel and /m @user for easy navigation.

5. Password-Protected ChannelsGroup chats can be locked with passwords. Only those with the password can read messages.

6. Emergency Data WipeTriple tap to wipe all app data instantly.

7. Battery Smart App lowers scanning frequency if your battery is low.

8. Tiny Packets, Low Band width, Designed to use minimal data and power.

How to Run Bitchat on iOS/macOS

You can build and run the app using Xcode. Here are three options:

Option 1: Using XcodeGen

• Install XcodeGen: brew install xcodegen

• Run: xcodegen generate

• Open bitchat.xcodeproj in Xcode

Option 2: Swift Package Manager

• Open Package.swift in Xcode and click run

Option 3: Manual Setup

• Create a new Xcode project

• Copy the Swift files

• Set necessary Bluetooth permissions in .plist

• Set deployment to iOS 16 / macOS 13+

Command	What it does
/j #channel	Join or create a channel
/m @user	Send a private message
/w	See who’s online
/block @user	Block a user
/unblock @user	Unblock a user
/clear	Clear current chat
/pass password	Set channel password
/transfer @user	Transfer channel ownership
/save	Save messages in a group

Privacy Features

• No sign up, no phone number

• Random usernames and peer IDs

• Fake cover traffic to confuse surveillance

• Timing delays to avoid message-timing attacks

• Ephemeral messages unless saved

Security Details

• Private Chat: AES-256 + X25519 key exchange

• Channels: Password-based encryption with Argon2id

• Authenticity: Ed25519 digital signatures

• Fingerprinting: Optional identity marking using keys

Performance & Optimization

• Compression: LZ4 algorithm to shrink messages

• Battery Awareness: Auto-dials down if battery < 20%

• Duplicate Detection: Optimized bloom filters

• Fragmentation: Large messages split into parts for better delivery

• Binary Protocol: Efficient for Bluetooth’s limited data capacity

Future Features

• WiFi Direct: Boost speed and range (250Mbps vs 1Mbps)

• Nostr Protocol Bridge: Sync between cities or countries with optional internet

• Alternative Transports:

  • LoRa for long range (2–15 km)

  • Ultrasonic for air gaps (no radio use)

• Transport Layer Selection: Auto choose best method (Bluetooth, WiFi, etc.)

Conclusion

We all rely on messaging apps every day, but sometimes the internet just isn’t there or we simply want more privacy. That’s where bitchat comes in. With bitchat, you and your friends can chat securely without any internet, SIM, or account. It’s all peer-to-peer, fully encrypted, and super easy to use. We built this to explore what’s possible with offline tech and now, you can use it, learn from it, or build on it too. Just connect, chat, and stay in control.

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Disclaimer

This blog is created by Young Web Solutions and is intended for informational purposes only. The Bitchat project discussed here is an independent open-source initiative by Jack and is neither sponsored nor promoted by us. We do not own or control the app and take no responsibility for any issues arising from its use. Readers are advised to use the app at their own discretion and understand its features before relying on it.