Quick answer
Nostr event signer for Android
F-Droid repository metadata
Amber is a nostr event signer for Android. It allows users to keep their nsec segregated in a single, dedicated app. The goal of Amber is to have your smartphone act as a NIP-46 signing device without any need for servers or additional hardware. "Private keys should be exposed to as few systems as possible as each system adds to the attack surface," as the rationale of said NIP states. In addition to native apps, Amber aims to support all current nostr web applications without requiring any extensions or web servers.
Screenshots
How to install
- Download the APK from the button at the top of this page.
- Allow “Install unknown apps” for your browser or file manager only, not for every app.
- Open the downloaded file and confirm the installation.
- If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.
Data safety
- Every file is checked against its published SHA-256 before it is listed.
- Files are scanned for malware on every update.
- The permissions each app requests are listed on its own page.
- Read the full safety policy for how we test, flag, and delist files.
Frequently asked questions
What is Amber?
Nostr event signer for Android
Who develops Amber?
Amber is developed by greenart7c3.
Which Android version does Amber require?
Amber requires Android API 26 or later.
What is the current version of Amber?
The synchronized F-Droid version is 6.6.8.
Which license does Amber use?
The signed F-Droid metadata lists MIT.
Where is the source code for Amber?
https://github.com/greenart7c3/Amber
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