Offline Messengers.

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Some messaging apps allow users to communicate even when there is no internet or cellular service. This can be crucial in various situations, such as during natural disasters or in crowded events where connectivity is limited. Having constant access to the internet and mobile networks is now as common as electricity. However, there are scenarios where these services may be unavailable and staying connected with nearby people becomes essential.

How Do P2P Messaging Apps Work?​

P2P (peer-to-peer) or mesh messaging apps create decentralized networks that connect multiple devices via Bluetooth or Wi-Fi Direct. Each device acts as both a client and a relay, forming a distributed network where messages can hop from one device to another until they reach the intended recipient. This method ensures that intermediate devices cannot read the messages, as they are encrypted.

Recommended Mesh Messaging Apps​

App Name	Key Features	Pros	Cons
Bitchat	Based on Bluetooth Low Energy (BLE), no registration required	Full decentralization, end-to-end encryption	Security vulnerabilities found, needs improvement
Bridgefy	Over 12 million users, supports BLE	High user base increases connectivity chances	Ads in free version, stability issues
Briar	Open-source, independent security audit	High privacy and security, works offline and via Tor	Limited to text messages, contact addition is cumbersome
White Mouse	Disappearing messages, no phone number needed	End-to-end encryption, privacy features	Currently only available for Android

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Bitchat​

Launched in July 2025, Bitchat is a new decentralized messaging app that resembles IRC chats from the late 1990s but incorporates modern encryption. It claims full decentralization and does not require user registration. However, it has faced criticism for security vulnerabilities.

Bridgefy​

With over 12 million users, Bridgefy is a popular choice among mesh messaging apps. It supports BLE and offers end-to-end encryption. It has two modes: private messaging and public broadcasting. However, users may encounter intrusive ads in the free version.

Briar​

Briar is an open-source messaging app that has undergone independent security audits. It can connect via Bluetooth, Wi-Fi Direct or the Tor network, making it versatile. However, it only supports text messages and requires QR code scanning or special links to add contacts.

White Mouse​

This app focuses on disappearing messages and doesn't require a phone number for registration. It offers end-to-end encryption and privacy features, such as preventing message forwarding and screenshots. Currently, it's only available for Android, but versions for other platforms are planned.

Considerations When Using Mesh Messaging Apps​

• Not a Replacement: These apps are not substitutes for centralized messengers. In urban areas, sending a message to someone in a nearby building can be challenging.
  User Base Matters: The effectiveness of mesh networks increases with more users. Encouraging friends to use the same app can enhance connectivity.
• Limited Range: The effective range is constrained by Bluetooth and Wi-Fi capabilities, typically requiring another user within 100 meters in open areas.
  Security Concerns: Not all apps guarantee reliable encryption. Trust only independent audits and prefer open-source projects for transparency.
• Battery Drain: Using Bluetooth and Wi-Fi Direct can deplete battery life quickly, so consider carrying power banks.
• Vulnerabilities: Some apps may have security flaws, so avoid discussing sensitive information on them.

General Tips for Using Mesh Messaging Apps​

Mesh messaging apps are tools for specific situations rather than everyday communication. Here are some tips for effective use:

• Ensure Compatibility: Confirm that your contacts have the same app installed.
• Test in Realistic Conditions: Check the app's functionality before important events.
• Pre-install and Configure: Set up the app in advance to avoid delays during critical moments.
• Have a Backup Communication Plan: Consider alternatives like walkie-talkies for specific environments.
• Try Multiple Apps: If you frequently travel to areas with connectivity issues, install several mesh messaging apps.

By understanding and utilizing these mesh messaging apps, you can stay connected even in challenging situations.

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