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SOS Ring

F-Droid

Open source

Force ringtone for VIP contacts even in Silent/DND mode

Version
2.18.0
Size
30.2 MB
Updated
Jul 13, 2026
Get from Download APK (v2.18.0)
Signing certificate on record

About this app

SOS Ring forces your phone to ring at full volume when you receive a call from a VIP contact, even if your phone is in Silent, Vibrate, or Do Not Disturb mode.

Perfect for families where someone always keeps their phone on silent but needs to be reachable in emergencies.

HOW IT WORKS: • Add your VIP contacts (family, partner, etc.) • Enable the monitoring service • When a VIP contact calls, SOS Ring overrides Silent/DND mode, plays the ringtone at your chosen volume (50-100%), and vibrates • After the call ends (answered, missed, or rejected), your phone is restored to its original state — silent mode, DND, volumes, everything

WHY THIS APP EXISTS: Android 14+ removed per-contact DND exceptions. No built-in way exists to let specific contacts bypass silent mode. Google restricts READ_CALL_LOG on the Play Store, so this type of app can't be published there. SOS Ring is free, open source, and works where others can't.

FEATURES: • Pick VIP contacts from your phonebook or enter manually • Configurable override volume (50-100%) • Works in Silent, Vibrate, AND Do Not Disturb mode • Full state restore after call (including alarm volume) • Survives phone reboots (auto-start) • Minimal battery usage (event-driven, no polling) • Dark mode support • No ads or tracking

LOCATION SHARING (optional, peer-to-peer): • No SOS Ring server required — you pick a UnifiedPush distributor app (e.g. ntfy on F-Droid); it relays only encrypted data • End-to-end encrypted using Web Push encryption; the distributor never sees your location • Each message is signed with a per-device key in the Android Keystore, so the recipient can verify the sender • Pairing is explicit via QR code — no automatic connections • Location sharing is off by default per contact; you control who can see your location • Live tracking streams your position roughly every 10 seconds for a chosen duration, shown on an OpenStreetMap map in the app • Tracked path is saved locally on the requester's device only — no data leaves without your explicit action • No server, no analytics, no tracking

PERMISSIONS EXPLAINED: • Phone State & Call Log: detect incoming calls and identify the caller • Contacts: pick VIP contacts from your phonebook • Do Not Disturb access: override DND when a VIP calls • Notifications: show a small persistent notification while monitoring • Location (including background): used only to answer location requests from paired contacts you explicitly authorized, even while the app is not on screen; nothing is collected or sent otherwise

SOURCE CODE: https://github.com/JackRushante/SOSRing

Licensed under GPL-3.0-or-later, by Lorenzo Marci.

OfficialSignature VerifiedOpen Source

What's New in v2.18.0

Imported from the F-Droid repository index.

  • New modern interface and appearance controls:
  • - Complete visual redesign across all screens
  • - Four color themes: Indigo, Teal, Clay and Slate
  • - Follow system, always light or always dark appearance
  • - Correct status and navigation bar contrast when overriding the system mode
  • - Clearer monitoring state, permissions and navigation

Version history

v2.18.0Latest
Signature continuous

Jul 13, 2026 · 30.2 MB · Android API 2934 · code 42

Imported from the F-Droid repository index.

  • New modern interface and appearance controls:
  • - Complete visual redesign across all screens
  • - Four color themes: Indigo, Teal, Clay and Slate
  • - Follow system, always light or always dark appearance
  • - Correct status and navigation bar contrast when overriding the system mode
  • - Clearer monitoring state, permissions and navigation
READ_PHONE_STATEREAD_CALL_LOGMODIFY_AUDIO_SETTINGSACCESS_NOTIFICATION_POLICYFOREGROUND_SERVICEFOREGROUND_SERVICE_SPECIAL_USEFOREGROUND_SERVICE_LOCATIONPOST_NOTIFICATIONSREAD_CONTACTSCAMERAVIBRATERECEIVE_BOOT_COMPLETEDINTERNETACCESS_FINE_LOCATIONACCESS_COARSE_LOCATIONACCESS_BACKGROUND_LOCATIONWAKE_LOCKACCESS_NETWORK_STATEACCESS_WIFI_STATEcom.lorenzomarci.sosring.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

SHA-256 0ac1e3f12b86af3ca769e6c3113cf38f9d519f31e08b83f5ab7fcf3fea39fbc6

v2.17.0
Signature continuous

Jul 7, 2026 · 30 MB · Android API 2934 · code 40

Imported from the F-Droid repository index.

  • Live tracking reliability fixes:
  • - Sessions now end on time even after the phone was in deep sleep
  • - Fixed GPS updates silently stopping mid-session (update budget corrected, automatic restart)
  • - New alerts when live updates stall on either side
  • - The map clearly shows when a session has ended; the path stays visible
  • - Start/stop messages are retried and recovered after reconnections
READ_PHONE_STATEREAD_CALL_LOGMODIFY_AUDIO_SETTINGSACCESS_NOTIFICATION_POLICYFOREGROUND_SERVICEFOREGROUND_SERVICE_SPECIAL_USEFOREGROUND_SERVICE_LOCATIONPOST_NOTIFICATIONSREAD_CONTACTSCAMERAVIBRATERECEIVE_BOOT_COMPLETEDINTERNETACCESS_FINE_LOCATIONACCESS_COARSE_LOCATIONACCESS_BACKGROUND_LOCATIONWAKE_LOCKACCESS_NETWORK_STATEACCESS_WIFI_STATEcom.lorenzomarci.sosring.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

SHA-256 5d5b1c36bdbf3c5ec8e9cf2d8495ec9a8edbabe900ccf14b9d9c6862d793d51c

v2.16.0
Signature continuous

Jul 3, 2026 · 30 MB · Android API 2934 · code 39

Imported from the F-Droid repository index.

  • • Ring reliability: DND and volume self-heal after a crash, international and landline VIP numbers now match, fallback ringtone when the custom one is unavailable
  • • Monitoring no longer requires location or contacts permissions
  • • Privacy: revoking location sharing stops a live share instantly; every inbound request is logged, including denied ones; daily live-tracking budget per contact
  • • Hardened peer identity and key validation
  • • Battery optimization guidance and UI polish
READ_PHONE_STATEREAD_CALL_LOGMODIFY_AUDIO_SETTINGSACCESS_NOTIFICATION_POLICYFOREGROUND_SERVICEFOREGROUND_SERVICE_SPECIAL_USEFOREGROUND_SERVICE_LOCATIONPOST_NOTIFICATIONSREAD_CONTACTSCAMERAVIBRATERECEIVE_BOOT_COMPLETEDINTERNETACCESS_FINE_LOCATIONACCESS_COARSE_LOCATIONACCESS_BACKGROUND_LOCATIONWAKE_LOCKACCESS_NETWORK_STATEACCESS_WIFI_STATEcom.lorenzomarci.sosring.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

SHA-256 50c44ee415aa27b33b4f6bc606a73141c5fcf5b75a2c556904f00b04e7a51404

Will it run on your device?

CompatibilityCheck the requirements

55%

  • Targets newer Android builds, so legacy devices may be excluded.
  • ABI coverage is focused on newer 64-bit devices.
What changed in this release
Size delta
+0.2 MB
Added permissions
None
Removed permissions
None

Installation Guide

1

Open Settings on your Android device

2

Go to Security → Unknown sources (or Install unknown apps)

3

Enable "Allow from this source" for your browser or file manager

4

Open the downloaded APK file from your Downloads folder

5

Tap "Install" and wait for installation to complete

6

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 com.lorenzomarci.sosring 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, 2.17.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall SOS Ring 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 Ring, and a listing is removed when the evidence for it stops holding up.

Get SOS Ring

Every source we list for com.lorenzomarci.sosring is legality-reviewed. Pirated or cracked builds are never offered.

Other sources

F-Droid listing

official

F-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.

Source code

verified publisher

The 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

Developer
F-Droid
Category
Social
Android
10+
Architectures
arm64-v8a
Version
2.18.0 (code 42)
Size
30.2 MB
Updated
Jul 13, 2026
Package name
com.lorenzomarci.sosring

Security Verification

File integrity
SHA-256 recorded
Signing certificate
Fingerprint on record
Official source
Download APK (v2.18.0)

We record provenance; we do not run malware scans. Verify the hash yourself before installing.

SHA-256 Hash

0ac1e3f12b86af3ca769e6c3113cf38f9d519f31e08b83f5ab7fcf3fea39fbc6

Signing certificate

8f435fff3ab4e7fb7b26df67b6ae8251830acbba3329291c1729e728e7d6024d

Permissions Required

What each permission lets SOS Ring do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.

READ_PHONE_STATERead phone status and identity, such as the current call state.
READ_CALL_LOGRead your call history.
MODIFY_AUDIO_SETTINGSChange volume and audio routing.
ACCESS_NOTIFICATION_POLICY
FOREGROUND_SERVICEKeep running in the background with a visible notification.
FOREGROUND_SERVICE_SPECIAL_USERun a background service for a purpose the developer declares.
FOREGROUND_SERVICE_LOCATION
POST_NOTIFICATIONSShow notifications.
READ_CONTACTSRead your contacts.
CAMERAUse the camera to take photos or video.
VIBRATEMake the device vibrate.
RECEIVE_BOOT_COMPLETEDStart automatically when the device finishes booting.
INTERNETSend and receive data over the internet.
ACCESS_FINE_LOCATIONRead your precise location.
ACCESS_COARSE_LOCATIONRead your approximate location.
ACCESS_BACKGROUND_LOCATIONRead your location even when the app is closed.
WAKE_LOCKKeep the device awake, e.g. to finish a download or play media.
ACCESS_NETWORK_STATECheck whether the device is online and on what kind of connection.
ACCESS_WIFI_STATESee Wi-Fi status and the network it is connected to.
com.lorenzomarci.sosring.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Previous Versions

Signature verified

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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