Description
Keychat and White Noise are two innovative, privacy-focused messaging clients built on the Nostr protocol. Both aim to deliver secure, censorship-resistant communication, but they differ in their approaches to encryption, metadata privacy, scalability, and user experience. This comparison highlights their core differences—especially in how they protect user metadata and handle large group communication—so you can choose the best fit for your privacy needs.
Comparison Table
| Feature | Keychat | White Noise |
|---|---|---|
| Core Protocols | Nostr, Bitcoin Ecash, Signal Protocol, Messaging Layer Security (MLS) | Nostr, Messaging Layer Security (MLS) |
| Encryption | End-to-end encryption per message using Signal/MLS; unique key per message | End-to-end encryption using MLS; group and DM encryption |
| Metadata Privacy | Uses Signal/MLS for message privacy; updates sender/receiver addresses frequently to reduce metadata | Explicit anonymization protocol to hide sender/receiver and timing; minimal metadata exposed |
| Identity | No registration; users generate Nostr keys as IDs | No registration; users authenticate via Nostr keys only |
| Payment Integration | Messages “stamped” with Bitcoin ecash; pay-per-message to relays | Planned Lightning Network and Nostr zaps integration; not yet live |
| Relay Usage | Multiple Bitcoin ecash issuers and Nostr relays; pay relays per message | Decentralized relays; groups can define and update relays dynamically |
| Group Chat | Supported, with Signal/MLS encryption | Supported, with MLS encryption for large groups |
| Scalability for Groups | Best for small to medium groups; Signal protocol has known scaling limits | Designed for massive groups; MLS enables efficient, secure scaling to thousands/millions |
| App Philosophy | Inspired by postal system (stamps, post offices, letters); focus on autonomy and payments | Focus on privacy, anonymity, and decentralization; protocol interoperability |
| Platform Availability | Android, Windows, MacOS, Linux (iOS planned) | Desktop (Mac, Linux, Windows), Android (iOS not yet supported) |
| Notable Extras | Integrated Bitcoin wallet, mini apps ecosystem, eSIM purchase (in development) | Open source, alpha release; aims for broad interoperability |
Conclusion
Keychat and White Noise both offer secure, decentralized messaging with strong privacy features, but their strengths differ. Keychat excels in payment integration and provides privacy through address rotation, making it suitable for users who want a postal-inspired experience and payment features. White Noise, on the other hand, provides superior metadata privacy and is specifically designed for scalable, encrypted communication in very large groups, thanks to its advanced use of MLS. For users seeking maximum privacy and scalability for group chats, White Noise is the more robust choice.
References:
This information is current as of July 2025 and verified from official project repositories.