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CLUSTER NOSTR-SECURELY-ANDROID · 5 ENTRIES · EARLIEST ENTRY 2024-06-28

Nostr Android signer apps

This cluster consists of Android apps focused on secure Nostr event signing and key management, using approaches such as hardware signer proxying, FROST threshold signatures, and the NIP-46 protocol. The dated history before the index start is too thin to read a shape from, with only three dated entries. Among the three members, nostr-signer shows the highest activity signal, followed by Amber and Citrine, though all currently show zero stars.

Entry timeline

ENTRY TIMELINE

JUN 2024: 1AUG 2024: 1JUL 2026: 1SEP 2026: 2
JUN 2024SEP 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 5 unlabelled

Operator · 1 hobby · 4 open source

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 5 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01nostr-signer0★1 molivehobbyDesktop app that stores Nostr private keys locally and lets web clients request signing approval without ever seeing the keys.
  2. 02Amber0★20 daysliveopen sourceAndroid app that securely stores Nostr private keys and signs events for other apps using the NIP-46 protocol.
  3. 03Citrine0★1 moliveopen sourceAndroid app that runs a Nostr relay, enabling any Nostr client to send and receive events from the device.
  4. 04Cambium0★1 moliveopen sourceAndroid app that acts as a proxy so Nostr clients can sign messages using a paired hardware signer without storing keys on the phone.
  5. 05Keep: FROST Nostr Signer0★2 moliveopen sourceAndroid app that securely signs Nostr events using distributed FROST threshold keys so no single device holds the full private key.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.