Beyond Centralization and Blockchains
Every modern “secure messenger” still leaves a footprint somewhere:
corporate servers, federated metadata, or immutable ledgers.
LUM eliminates them completely.
| Feature / Platform | LetUsMsg | Signal | Session | SimpleX | |
|---|---|---|---|---|---|
| Server Model | Ephemeral relays (RAM only) | Central nonprofit | Blockchain nodes | Rotating relays | Central cloud |
| Data Retention | None (volatile) | Limited | Metadata minimized | Minimal | Retained |
| User Identity | Per‑Chat Alias | Phone number | Anonymous ID | Random ID | Phone number |
| Local Storage | Per-Chat PQ Tripple Ratchet | Native AES | TBD | TBD | Native AES |
| Crypto Model | User‑defined cipher chain | Fixed Signal protocol | Fixed Signal fork | Fixed | Fixed |
| Metadata Logs | None | Minimal | Minimal | Minimal | High |
| Infrastructure Control | User‑owned, self‑deployable | Foundation‑controlled | Node network | Community relays | Meta (Facebook) |
| Blockchain Dependence | None | None | Required | None | None |
| Deployment | Docker/K8s, local‑first | Central servers | P2P nodes | Custom relays | Central cloud |
| Relay Lifetime | ~7 days (configurable) | Indefinite | Indefinite | Indefinite | Indefinite |
LetUsMsg creates a third model: an owner‑controlled, ephemeral network.
Your messages flow through RAM, not databases, then vanish on schedule.