Signet APK Download v0.4.0 (Latest Version) for Android
⬇ Download APK v0.4.0The latest version of Signet APK (v0.4.0) is available to download. Verify calls from family, colleagues, sources against deepfake impersonation. This app works on Android phones and tablets.
About Signet APK
When someone who sounds like your mother calls in a panic asking for bail money, Signet lets you verify it's actually her. Each paired contact generates a rotating 4-word phrase that only the real person's phone can produce. You ask her to read her phrase aloud; you type what you hear. Green banner: verified. Red banner: something's wrong — hang up and call her back on a number you already trust. Signet works over any channel. Voice calls, video calls, text, email, in person. The only requirement is that the two of you paired once, in person or over a trusted channel, before the crisis. Built for a world where AI voice cloning is commodity. Defends against: * Real-time voice and video deepfakes * Pre-recorded deepfake voicemails * Vishing using scraped biographical knowledge * Compromised messaging accounts where the attacker has chat history but not the paired device * SIM swaps * Reflection attacks: the rotating code is direction-aware, so…
Signet APK was developed by digital-grease and is available under the AGPL-3.0-only open-source license. This means the source code is public and anyone can inspect it. If you like Phone & SMS apps, you can also browse more apps in this category.
Signet APK Information
| App Name | Signet |
| Package | dev.digitalgrease.signet |
| Version | 0.4.0 |
| Size | 25 MB |
| Requires | Android 9 and up |
| Category | Phone & SMS |
| Developer | digital-grease |
| License | AGPL-3.0-only |
| Source | F-Droid |
| Last Updated | October 27, 2026 |
How to Install Signet APK on Android
- Download the Signet APK file using the button above.
- Open your phone Settings and allow “Install unknown apps” for your browser or file manager.
- Tap the downloaded APK file and press Install.
- After installation, open Signet from your app drawer.
Why Download Signet APK from Here?
We link Signet APK directly from F-Droid, so the file is original and we make no changes to it. Whenever a new version is released, this page is updated automatically, so you always get the latest Signet APK.
Frequently Asked Questions
Is Signet APK free?
Yes, Signet APK is free and available under the AGPL-3.0-only open-source license.
Is Signet APK safe?
This file comes from the official F-Droid repository, where apps are open source and their source code is public. Still, always check an app’s permissions before installing it.
Which Android version does Signet APK need?
Signet APK requires Android 9 and up to run.
What is the latest version of Signet APK?
The latest version is 0.4.0, updated on October 27, 2026.
Official page: Signet official website / source