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Back to Signal Private Messenger

Tech StackTDN

Signal Private Messenger Tech Stack

Languages, frameworks, and third-party SDKs detected inside Signal Private Messenger — extracted from the Google Play build.

Store ProfileVersion HistoryCountry RankingsTDN InsightsTDNBuild Stack
v8.12.4 · latestNo declared tracking

Stack profile

C/C++ (native) · Java · Kotlin · 27 third-party SDKs across 13 categories · notable detections include Firebase, Google, Lottie

Analysis

Analyzed
June 4, 2026
Bundle ID
org.thoughtcrime.securesms
Detection floor
Observed

Languages

3

C/C++ (native) · Java · Kotlin

Third-party SDKs

27

13 categories

Permissions

75

12 native libs

Signals

84

capabilities, APIs, fonts

Build

Build & platform

Android SDK levels, supported ABIs, and signing scheme detected from the APK.

Min SDK

23

Target SDK

35

ABIs

1

arm64-v8a

Signing

v1 · v2 · v3

Common Name: Whisper Systems

Manifest

App components

Activities, services, broadcast receivers, and content providers declared in the manifest.

Activities

102

Services

26

Receivers

33

Providers

6

Exported (36)

activity-alias:org.thoughtcrime.securesms.RoutingActivityactivity-alias:org.thoughtcrime.securesms.RoutingActivityAltBubblesactivity-alias:org.thoughtcrime.securesms.RoutingActivityAltChatactivity-alias:org.thoughtcrime.securesms.RoutingActivityAltColoractivity-alias:org.thoughtcrime.securesms.RoutingActivityAltDarkactivity-alias:org.thoughtcrime.securesms.RoutingActivityAltDarkVariantactivity-alias:org.thoughtcrime.securesms.RoutingActivityAltNewsactivity-alias:org.thoughtcrime.securesms.RoutingActivityAltNotesactivity-alias:org.thoughtcrime.securesms.RoutingActivityAltWavesactivity-alias:org.thoughtcrime.securesms.RoutingActivityAltWeatheractivity-alias:org.thoughtcrime.securesms.RoutingActivityAltWhiteactivity-alias:org.thoughtcrime.securesms.RoutingActivityAltYellow

Manifest

Permissions

75 permissions requested in the manifest.
android.permission.ACCESS_COARSE_LOCATIONandroid.permission.ACCESS_FINE_LOCATIONandroid.permission.ACCESS_NETWORK_STATEandroid.permission.ACCESS_NOTIFICATION_POLICYandroid.permission.ACCESS_WIFI_STATEandroid.permission.AUTHENTICATE_ACCOUNTSandroid.permission.BLUETOOTHandroid.permission.BLUETOOTH_CONNECTandroid.permission.BROADCAST_STICKYandroid.permission.CAMERAandroid.permission.CHANGE_NETWORK_STATEandroid.permission.CHANGE_WIFI_STATEandroid.permission.DISABLE_KEYGUARDandroid.permission.FOREGROUND_SERVICEandroid.permission.FOREGROUND_SERVICE_CAMERAandroid.permission.FOREGROUND_SERVICE_CONNECTED_DEVICEandroid.permission.FOREGROUND_SERVICE_DATA_SYNCandroid.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACKandroid.permission.FOREGROUND_SERVICE_MEDIA_PROJECTIONandroid.permission.FOREGROUND_SERVICE_MICROPHONE

Native

Native libraries

Bundled native (.so) libraries — NDK code and cross-platform runtimes.
libaesgcm.solibandroidx.graphics.path.solibconscrypt_jni.solibdatastore_shared_counter.solibimage_processing_util_jni.solibmobilecoin.solibnative-utils.solibringrtc.solibringrtc_rffi.solibsignal_jni.solibsqlcipher.solibsurface_util_jni.so

API

API surface

Endpoints, base URLs, and URI schemes recovered from the DEX string pool.

Base URLs

http://g.co/dev/packagevisibilityhttps://%s/%s/%shttps://android.clients.google.comhttps://aomedia.org/emsg/ID3https://api.stripe.com/v1https://cdn.signal.orghttps://cdn2.signal.orghttps://cdn3.signal.orghttps://cdsi.signal.orghttps://chat.signal.orghttps://clients3.google.comhttps://clients4.google.com

API endpoints

/api/v1/message/api/v1/queue/empty/auth/games/auth/games_lite/auth/x500/X500Principal/v1//v1/accounts/attributes/v1/accounts/gcm/v1/accounts/me/v1/accounts/name/v1/accounts/registration_lock/v1/accounts/username_hash/v1/accounts/username_hash/confirm/v1/accounts/username_hash/reserve/v1/accounts/username_link/v1/accounts/whoami/v1/address/v1/archives/v1/archives/auth/v1/archives/auth/read

URI schemes

android-appandroid.resourcecustomdnsfogmarketmcrawresourcertspsgnlsgnlpaysignalcaptchawswss

Signals

Capability & security signals

Behaviors inferred from DEX type descriptors — WebView bridges, dynamic code loading, reflection, crypto, keystore, and more.
Android KeystoreBiometric authClassLoader useProcess exec (Runtime)ReflectionSymmetric crypto (javax.crypto)Telephony / device infoWebView

Security

Potential secrets detected

String patterns matching credentials/keys found by static scanning. Counts only — values are never published.
stripe publishable: 1

Build

Build & platform

Compiler, target OS, supported device families, and localization footprint detected from the bundle.

Devices

Android

Runtime

Languages & runtimes

Primary runtimes and language signatures observed in the app binary.
CC/C++ (native)36JJava36KKotlin36

Dependencies

Third-party SDKs

Grouped by purpose. Select any SDK to see other tracked apps that use it.
27 of 27 SDKs shown

Payments

1
Google Play Billing23

Authentication

2
CCredential Manager14Google Sign-In / Auth35

Networking

2
OOkHttp21OOkio13

Messaging

1
Firebase Messaging26

Maps

1
Google Maps21

Media

1
MMedia3 (ExoPlayer)26

Reactive / Async

3
KKotlin Coroutines35RRxJava7RRxJava 32

Storage

2
DDataStore14SSQLCipher

Firebase

3
Firebase49Google DataTransport20Google Play services35

Rendering

4
GGlide28JJetpack Compose29Lottie62MMaterial Components34

Voice

1
WWebRTC12

Telephony

1
Llibphonenumber9

Other

5
GGson21JJackson2Jjavax.inject14Kkotlinx.serialization14PProtobuf35

Interface

UI & graphics

Frameworks and libraries Signal Private Messenger uses to render its interface and animations.
GlideJetpack ComposeLottieMaterial Components

Assets

Bundled fonts

Custom font families packaged in the app bundle.
Hatsuishi-RegularInter-MediumMonoSpecial-RegularRoboto-Lightroboto_medium_numbersSignalSymbols-BoldSignalSymbols-Regular

Packaging

Build & packaging

Dependency managers and build tooling detected in the app bundle.
Gradle (inferred)

Integrations

Services & integrations

Service configuration, URL schemes, universal links, and integration keys observed in the sanitized audit.

Firebase projects

api-project-312334754206

https://api-project-312334754206.firebaseio.com

SDK config keys

com.google.android.geo.API_KEY

Google Maps

Registered URL schemes

httpssgnltsdevice

Queries other apps

androidx.test.orchestratorandroidx.test.servicescom.google.android.apps.common.testing.servicescom.google.android.apps.maps

Universal link hosts

signal.artsignal.groupsignal.linksignal.mesignal.tubesignaldonations.org

Network

Backend & API

Backend hosts, GraphQL operations, and certificate pinning signals surfaced by static analysis.

Backend hosts

aomedia.orgapi-project-312334754206.firebaseio.comapi.giphy.comapi.stripe.comcdn.signal.orgcdn2.signal.orgcdn3.signal.orgcdsi.signal.orgchat.signal.orgdebuglogs.orgdefault.urldeveloper.apple.comgithub.comgithub.githubassets.comgoo.glegooglemail.comns.adobe.compinterest.comsfu.staging.test.voip.signal.orgsfu.staging.voip.signal.orgsfu.test.voip.signal.orgsfu.voip.signal.orgsignal.artsignal.groupsignal.linksignal.mesignal.orgsignal.tube

First party

App modules

Likely first-party modules and resource bundles detected in Signal Private Messenger.
org.thoughtcrimeorg.thoughtcrime.securesms

Entitlements

Capabilities

System capabilities and entitlement flags included with the app.
Approximate locationBiometric authBluetoothBluetooth (connect)CameraContacts (read)Contacts (write)Fingerprint authForeground serviceForeground service: cameraForeground service: media playbackForeground service: microphoneMedia: imagesMedia: videoMicrophoneNotificationsPhone / carrier infoPrecise locationStorage (read)Storage (write)

APIs

Detected API usage

System frameworks and privacy-sensitive APIs referenced by the binary.
Android KeystoreBiometric authClassLoader useProcess exec (Runtime)ReflectionSymmetric crypto (javax.crypto)Telephony / device infoWebView

Architecture

Architecture details

Additional build and bundle signals that help explain how the app is structured.

Storyboards

0

Nibs

0

Build dependency versions

androidx.activity_activity

1.13.0

androidx.activity_activity-compose

1.13.0

androidx.activity_activity-ktx

1.13.0

androidx.annotation_annotation-experimental

1.5.1

androidx.appcompat_appcompat

1.7.1

androidx.appcompat_appcompat-resources

1.7.1

androidx.asynclayoutinflater_asynclayoutinflater

1.1.0

androidx.asynclayoutinflater_asynclayoutinflater-appcompat

1.1.0

androidx.autofill_autofill

1.3.0

androidx.biometric_biometric

1.1.0

androidx.camera.featurecombinationquery_featurecombinationquery

1.5.2

androidx.camera.viewfinder_viewfinder-compose

1.5.2

androidx.camera.viewfinder_viewfinder-core

1.5.2

androidx.camera_camera-camera2

1.5.2

androidx.camera_camera-compose

1.5.2

androidx.camera_camera-core

1.5.2

androidx.camera_camera-extensions

1.5.2

androidx.camera_camera-lifecycle

1.5.2

androidx.camera_camera-video

1.5.2

androidx.camera_camera-view

1.5.2

androidx.cardview_cardview

1.0.0

androidx.compose.animation_animation

1.11.0

androidx.compose.animation_animation-core

1.11.0

androidx.compose.foundation_foundation

1.11.0

androidx.compose.foundation_foundation-layout

1.11.0

androidx.compose.material3.adaptive_adaptive

1.2.0

androidx.compose.material3.adaptive_adaptive-layout

1.2.0

androidx.compose.material3.adaptive_adaptive-navigation

1.2.0

androidx.compose.material3_material3

1.4.0

androidx.compose.material_material-icons-core

1.7.8

androidx.compose.material_material-icons-extended

1.7.8

androidx.compose.material_material-ripple

1.11.0

androidx.compose.runtime_runtime

1.11.0

androidx.compose.runtime_runtime-annotation

1.11.0

androidx.compose.runtime_runtime-livedata

1.11.0

androidx.compose.runtime_runtime-retain

1.11.0

androidx.compose.runtime_runtime-rxjava3

1.11.0

androidx.compose.runtime_runtime-saveable

1.11.0

androidx.compose.ui_ui

1.11.0

androidx.compose.ui_ui-geometry

1.11.0

androidx.compose.ui_ui-graphics

1.11.0

androidx.compose.ui_ui-test

1.11.0

androidx.compose.ui_ui-test-junit4

1.11.0

androidx.compose.ui_ui-test-manifest

1.11.0

androidx.compose.ui_ui-text

1.11.0

androidx.compose.ui_ui-tooling-preview

1.11.0

androidx.compose.ui_ui-unit

1.11.0

androidx.compose.ui_ui-util

1.11.0

androidx.constraintlayout_constraintlayout

2.2.1

androidx.coordinatorlayout_coordinatorlayout

1.1.0

androidx.core_core

1.18.0

androidx.core_core-ktx

1.18.0

androidx.core_core-telecom

1.1.0-alpha04

androidx.core_core-viewtree

1.0.0

androidx.credentials_credentials

1.6.0

androidx.credentials_credentials-play-services-auth

1.6.0

androidx.cursoradapter_cursoradapter

1.0.0

androidx.customview_customview

1.1.0

androidx.customview_customview-poolingcontainer

1.0.0

androidx.databinding_viewbinding

9.1.1

androidx.datastore_datastore

1.1.7

androidx.datastore_datastore-core

1.1.7

androidx.datastore_datastore-preferences

1.1.7

androidx.datastore_datastore-preferences-core

1.1.7

androidx.documentfile_documentfile

1.0.1

androidx.drawerlayout_drawerlayout

1.1.1

androidx.dynamicanimation_dynamicanimation

1.0.0

androidx.emoji2_emoji2

1.6.0

androidx.emoji2_emoji2-views-helper

1.6.0

androidx.exifinterface_exifinterface

1.4.2

androidx.fragment_fragment

1.8.9

androidx.fragment_fragment-compose

1.8.9

androidx.fragment_fragment-ktx

1.8.9

androidx.graphics_graphics-path

1.0.1

androidx.gridlayout_gridlayout

1.1.0

androidx.interpolator_interpolator

1.0.0

androidx.legacy_legacy-preference-v14

1.0.0

androidx.legacy_legacy-support-core-ui

1.0.0

androidx.legacy_legacy-support-core-utils

1.0.0

androidx.legacy_legacy-support-v13

1.0.0

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