Download Keryx Maps

Android Installation Options

Version 1.0.0

Google Play Store

Recommended for most users

  • Automatic updates
  • Easy installation
  • Google account required
Open Play Store

Direct APK Download

For privacy-focused users

  • No Google account needed
  • GrapheneOS & LineageOS compatible
  • Cryptographically verified
Download APK (45 MB)

APK Verification

Verify the authenticity of the APK before installation to ensure it hasn't been tampered with.

PLACEHOLDER_SHA256_HASH_REPLACE_WHEN_BUILDING_APK
PLACEHOLDER_SIGNING_KEY_FINGERPRINT

How to verify:

  1. Download the APK file
  2. Calculate SHA-256: sha256sum keryx-maps-v1.0.0.apk
  3. Compare with the checksum above - they must match exactly

Installation Instructions

GrapheneOS

  1. Enable app installation from Files app:
    • Open Settings → Apps
    • Find Files app
    • Enable "Install unknown apps"
  2. Download the APK:

    Open this page in Vanadium (GrapheneOS browser) and tap "Download APK" above

  3. Verify the APK (optional but recommended):

    Use a checksum app or terminal to verify SHA-256 matches

  4. Install the APK:
    • Open Files app
    • Navigate to Downloads
    • Tap keryx-maps-v1.0.0.apk
    • Tap Install
  5. Launch Keryx Maps from your app drawer

After installation:

You can disable "Install unknown apps" for the Files app in Settings → Apps → Files for added security.

LineageOS (& Other Custom ROMs)

  1. Enable "Unknown sources":
    • Open Settings → Security
    • Enable "Unknown sources" or "Install unknown apps"
    • If prompted, allow your browser to install apps
  2. Download the APK using your browser
  3. Verify SHA-256 checksum (optional but recommended)
  4. Open Downloads and tap the APK file
  5. Tap "Install" and wait for installation to complete
  6. Launch Keryx Maps from app drawer

Frequently Asked Questions

Why offer direct APK download?

We believe in user choice and privacy. Many privacy-conscious users prefer not to use Google services, and direct APK installation supports users on GrapheneOS, LineageOS, and other privacy-focused Android distributions.

Is the APK the same as the Play Store version?

Yes, both versions are signed with the same key and contain identical code. The only difference is the distribution method - Play Store handles updates automatically, while APK users need to check for updates manually.

How do I update the APK version?

Visit this page periodically to check for new versions. You can also subscribe to our update notifications (coming soon) to receive emails about new versions, map enhancements, and feature updates.

Can I use this on regular Android phones?

Yes! The direct APK works on any Android device running Android 8.0 or higher. However, we recommend using the Play Store version for automatic updates unless you specifically need the privacy benefits of direct installation.

Is it safe to install apps from unknown sources?

Installing from unknown sources can be risky if you don't verify the source. Always verify the SHA-256 checksum matches before installing, and only download from our official website (keryxmaps.com). After installation, you can disable "Install unknown apps" for added security.

What permissions does Keryx Maps require?

Keryx Maps follows privacy-first principles. Required permissions: Location (for map positioning), Storage (for offline maps), and Notifications (for disaster alerts). All permissions can be reviewed before installation and modified in your device settings.

Privacy-First Disaster Preparedness

Keryx Maps is designed with privacy at its core. We don't track your location, sell your data, or require accounts for basic functionality. Your disaster preparedness data stays on your device, encrypted and under your control. Whether you use the Play Store version or direct APK, your privacy is protected.