BitChat vs Keybase
BitChat
bitchat.freeKeybase
keybase.ioSide by side
| Figure | BitChat | Keybase |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | — | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 1 | 0 |
| Spec score · Encrypted Messaging Apps | 8.9 (#1) | 7.7 (#23) |
| Encryption | The project describes Noise Protocol end-to-end encryption for mesh messages and BitChat private envelopes for Nostr fallback messages. | Keybase says messages and files are end-to-end encrypted so only the user and intended recipients can read them. |
| Integrations | The listed internet messaging transport is the Nostr protocol, which connects BitChat users through relays. | Keybase says users can connect with public communities from Twitter, Reddit, and elsewhere. |
| Open source | The iOS/macOS project and Android project state that they are released into the public domain. | Keybase describes its app as open source and links to its source code. |
| Platforms | The maker's site lists iOS, macOS, and Android builds; iOS requires version 16.0 or later, macOS 13.0 or later, and Android 8.0 or later. | Keybase’s installation page lists macOS, Linux, Windows, iPhone/iPad, and Android. |
Plans
In their own words
BitChat
BitChat is a decentralized messaging app that uses Bluetooth mesh for nearby communication and Nostr relays for internet messaging. Bluetooth messages can pass between nearby devices across as many as seven hops without internet access. When Bluetooth is unavailable, the app can use Nostr; if neither route is available, messages can wait in a queue. Geographic chat rooms use geohash coordinates.
The app requires no account, phone number, or central server. Live mesh sessions use Noise XX for mutual authentication and forward secrecy, while private Nostr messages use an app-specific encrypted format that works only with BitChat clients. However, mesh announcements expose static keys and nicknames in cleartext, and a persistent per-device identifier can allow nearby listeners to follow a device over time and place. A triple-tap emergency wipe clears app data, including identity keys and queued messages. Android adds Wi-Fi Aware on supported devices and built-in Tor. BitChat is available for iOS, Android, and macOS, and is free.
Keybase
Keybase is a free messaging and file-sharing product for Android, iOS, Linux, macOS, web and Windows. It uses public-key cryptography for private chats and says messages and files are end-to-end encrypted so only users and intended recipients can read them. Private keys stay on users’ devices rather than Keybase’s servers. Users can set timers on sensitive messages in one-to-one chats and team, group and community channels. Teams bring together private chats with multiple channels, file sharing and collaboration on Git. Team chats, files and Git are end-to-end encrypted, and team keys change when someone is removed or revokes a device. Teams and subteams can store up to 100 GB of documents, photos and videos; personal Git repositories have a combined 100 GB limit, and each team gets 100 GB for Git. Keybase also supports public communities and identity proofs involving integrated social networks. The download page describes it as open source, and business admin controls are available. For client bugs, Keybase directs users to run `keybase log send` in a terminal and follow the instructions.