Privacy-focused emergency app with SMS location tracking and silent recording.
About this app
SOS Alerter is a modern, privacy-focused emergency assistance application designed to keep you safe when it matters most. It operates entirely offline, storing all user credentials, contacts, and captured media locally on your device.
Key Features: * Emergency SMS & Call Alerts: Instantly send custom emergency SMS messages with high-accuracy GPS coordinates and auto-dial your designated contact or emergency services. * Continuous GPS Tracking: Keep contacts updated with periodic location sharing. * Discreet Evidence Gathering: Silently capture photos using front and back cameras, and record ambient audio during an active emergency. * Versatile Activation Triggers: Trigger an alert via a triple-press of the power button, shaking the device, voice commands ("Help Me"), or a long press on the main screen button. * Loud Siren & Strobe: Activate a loud siren and strobe light to grab nearby attention. * No Trackers or Ads: Free and open-source under GPLv3, with absolutely no telemetry, analytics, or third-party connections.
Licensed under GPL-3.0-or-later, by Dhilip.
What's New in v1.1.0
Imported from the F-Droid repository index.
Version history
Jul 1, 2026 · 4.8 MB · Android API 26–34 · code 6
Imported from the F-Droid repository index.
SHA-256 29ee0c934d3e4794d2a2052a9c320f79cd62d7cd4faf8f7e3f654b8bdebce2a0
Jun 24, 2026 · 4.7 MB · Android API 26–34 · code 5
Imported from the F-Droid repository index.
SHA-256 ec399e33ad4d72b87764382d2c13a198e662e0ed17a675cd34a87755cb7280ec
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be org.sosalerter.app is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.0.0-beta5 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall SOS Alerter first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of SOS Alerter, and a listing is removed when the evidence for it stops holding up.
Get SOS Alerter
Every source we list for org.sosalerter.app is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
29ee0c934d3e4794d2a2052a9c320f79cd62d7cd4faf8f7e3f654b8bdebce2a0
Signing certificate
83868570c73de15aa2966908b67a8e31543ffcd15f308bdcc0311d866aa37045
Permissions Required
What each permission lets SOS Alerter do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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