Signal Icon

Probably one of the most popular, secure private messaging apps that combines strong encryption (see Signal Protocol) with a simple UI and plenty of features. It's widely used across the world, and easy-to-use, functioning similar to WhatsApp - with instant messaging, read-receipts, support for media attachments and allows for high-quality voice and video calls. It's cross-platform, open-source and totally free. Signal is recommended by Edward Snowden, and is a perfect solution for most users.

Open Source

Signal Privacy Policy

Privacy Policy Summary

  • Prohibits the publishing of personally identifiable information without the owner’s consent
  • This service informs users that its Terms of Service does not apply to third party websites
  • Your personal data is not sold
  • Third parties used by the service are bound by confidentiality obligations
  • This service does not track you
  • You have the right to leave this service at any time
  • This service does not keep records of who you have communicated with
  • The service promises to disclose the transcripts of government requests
  • The service can delete your account without prior notice and without a reason
  • Your personal data is aggregated into statistics
  • You must create an account to use this service
  • This service cannot be held responsible for disputes that you may have with other users
  • This service assumes no liability for any losses or damages resulting from any matter relating to the service
  • The service does not guarantee accuracy or reliability of the information provided
  • The service provider makes no warranty regarding uninterrupted, timely, secure or error-free service
  • The service does not share user information with third parties
  • You are responsible for maintaining the security of your account and for the activities on your account
  • You can request access, correction and/or deletion of your data
  • User-generated content is encrypted, and this service cannot decrypt it
  • The user is informed about security practices
  • This service provides a way for you to export your data
  • The service is provided 'as is' and to be used at the users' sole risk
  • They may stop providing the service at any time
  • Users agree not to use the service for illegal purposes
  • The service allows you to use pseudonyms
  • Court of law is in California
  • You must be at least 13 years old to use the service
  • This service does not sell your personal data
  • You maintain ownership of your data
  • You can delete your content from this service
  • This service does not force users into binding arbitration
  • The court of law governing the terms is in a jurisdiction that is friendlier to user privacy protection.
  • The service provides details about what kinds of personal information they collect
  • Your personal data is used for limited purposes
  • This service allows you to retrieve an archive of your data
  • The service will only respond to government requests that are reasonable
  • Users who have been permanently banned from this service are not allowed to re-register under a new account
  • The service reviews its privacy policy on a regular basis
  • The service provides two factor authentication for your account
  • The service claims to be GDPR compliant for European users
  • Features of the website are made available under a free software license
  • Any liability on behalf of the service is only limited to $100
  • Only necessary user logs are kept by the service to ensure quality
  • Terms may be changed any time at their discretion, without notice to the user
  • Third parties may be involved in operating the service
  • The service will resist legal requests for user information where reasonably possible




Domains Covered by Policy


About the Data

This data is kindly provided by Read full report at: #528

Signal Source Code




Server supporting the Signal Private Messenger applications on Android, Desktop, and iOS





09 Dec 13

Last Updated

20 Jul 24

Latest version


Primary Language



14,010 KB







Language Usage

Language Usage

Star History

Star History

Recent Commits

  • Chris Eager (18 Jul 24)

    Use server timestamp for delivery duration metrics

  • Jon Chambers (18 Jul 24)

    Add a general job scheduler

  • Jon Chambers (17 Jul 24)

    Mark old attachment endpoints as `@Deprecated`

  • Jon Chambers (17 Jul 24)

    Retire `PushLatencyManager`

  • Jon Chambers (17 Jul 24)

    Add an "is primary" dimension to message latency measurements

  • Ravi Khadiwala (11 Jul 24)

    Use non-legacy rate limit error in BackupAuthManager

  • Chris Eager (10 Jul 24)

    Update GitHub Actions

  • Chris Eager (10 Jul 24)

    Update various dependencies

  • Chris Eager (10 Jul 24)


  • Chris Eager (11 Jul 24)

    Remove unused RateLimiters

  • Jon Chambers (11 Jul 24)

    Introduce a utility class for finding reasonable times to send push notifications

  • Chris Eager (09 Jul 24)

    Add distribution of multi-recipient message recipient counts

  • Chris Eager (09 Jul 24)

    Add metric for group send token adoption

  • Jon Chambers (08 Jul 24)

    Return futures from "send push notification" operations

  • Ravi Khadiwala (08 Jul 24)

    Add warn log if changeNumber messages fail

  • ravi-signal (08 Jul 24)

    Count unregistered APNS tokens with a recent update

  • Jon Chambers (08 Jul 24)

    Discard APNs tokens if the APNs server reports that the token is expired

  • Chris Eager (03 Jul 24)

    Remove deprecated PUT /v2/keys/signed endpoint

  • Chris Eager (01 Jul 24)

    Reduce DynamoDB test client API timeouts

  • Jon Chambers (28 Jun 24)

    Avoid duplicate metric registry configuration in commands

  • Jon Chambers (28 Jun 24)

    Throw an exception if metric registries are configured more than once

  • Jon Chambers (25 Jun 24)

    Retire `Device#hasMessageDeliveryChannel()`

  • Ameya Lokare (26 Jun 24)

    Update to the latest version of the spam filter

  • Ameya Lokare (24 Jun 24)

    Pass AccountAndAuthenticatedDeviceHolder to spam filter

  • Jon Chambers (25 Jun 24)

    Update to the latest version of the spam filter

  • Jon Chambers (24 Jun 24)

    Rename `AuthEnablementRefreshRequirementProvider` to `LinkedDeviceRefreshRequirementProvider`

  • Jon Chambers (10 Jun 24)

    Stop monitoring device "enabled" state changes from auth enablement refresh requirement provider Device enabled states no longer affect anything at an authentication level

  • Jon Chambers (21 Jun 24)

    Expire APNs tokens if they haven't been updated since the expiration timestamp

  • Jon Chambers (21 Jun 24)

    Include "token invalidation timestamp" in push notification responses

  • Jon Chambers (21 Jun 24)

    Store updated APNs tokens unconditionally

Signal Website


Signal >> Home

Say "hello" to a different messaging experience. An unexpected focus on privacy, combined with all of the features you expect.


Does not redirect

Security Checks

All 66 security checks passed

Server Details

  • IP Address
  • Hostname
  • Location Atlanta, Georgia, United States of America, NA
  • ISP Inc.
  • ASN AS16509

Associated Countries

  • US

Saftey Score

Website marked as safe


Blacklist Check was found on 0 blacklists

  • ThreatLog
  • OpenPhish
  • PhishTank
  • Phishing.Database
  • PhishStats
  • URLhaus
  • RPiList Not Serious
  • AntiSocial Blacklist
  • PhishFeed
  • NABP Not Recommended Sites
  • Spam404
  • CRDF
  • Artists Against 419
  • CERT Polska
  • PetScams
  • Suspicious Hosting IP
  • Phishunt
  • CoinBlockerLists
  • MetaMask EthPhishing
  • EtherScamDB
  • EtherAddressLookup
  • ViriBack C2 Tracker
  • Bambenek Consulting
  • Badbitcoin
  • SecureReload Phishing List
  • Fake Website Buster
  • TweetFeed
  • CryptoScamDB
  • StopGunScams
  • ThreatFox
  • PhishFort

Website Preview

Signal Android App

Update Info

  • App Signal
  • Creation Date 04 Jun 20
  • Last Updated 09 Dec 23
  • Current Version 4.61.6


No trackers found


  • Access Coarse Location
  • Access Fine Location
  • Access Network State
  • Access Notification Policy
  • Access Wifi State
  • Authenticate Accounts
  • Bluetooth
  • Broadcast Sticky
  • Broadcast Wap Push
  • Call Phone
  • Camera
  • Change Network State
  • Change Wifi State
  • Disable Keyguard
  • Foreground Service
  • Get Accounts
  • Install Shortcut
  • Internet
  • Modify Audio Settings
  • Raised Thread Priority
  • Read App Badge
  • Read Calendar
  • Read Call State
  • Read Contacts
  • Read External Storage
  • Read Phone State
  • Read Profile
  • Read Sms
  • Read Sync Settings
  • Receive Boot Completed
  • Receive Mms
  • Receive Sms
  • Record Audio
  • Request Ignore Battery Optimizations
  • Send Sms
  • Set Wallpaper
  • Use Credentials
  • Use Fingerprint
  • Use Full Screen Intent
  • Vibrate
  • Wake Lock
  • Write Calendar
  • Write Contacts
  • Write External Storage
  • Write Profile
  • Write Sms
  • Write Sync Settings
  • Update Count
  • Install Shortcut
  • Receive
  • Read Settings
  • Update Shortcut
  • Change Badge
  • Read Settings
  • Write Settings
  • Update Badge
  • Read Settings
  • Write Settings
  • Read
  • Write
  • Broadcast Badge
  • Provider Insert Badge
  • Badge Count Read
  • Badge Count Write
  • Access Secrets

Signal iOS App

App Info

Signal - Private Messenger

Signal is a messaging app with privacy at its core. It is free and easy to use, with strong end-to-end encryption that keeps your communication completely private. • Send texts, voice messages, photos, videos, GIFs, and files for free. Signal uses your phone’s data connection, so you avoid SMS and MMS fees. • Call your friends with crystal-clear encrypted voice and video calls. Group calls supported for up to 40 people. • Stay connected with group chats up to 1,000 people. Control who can post and manage group members with admin permission settings. • Share image, text, and video Stories that disappear after 24 hours. Privacy settings keep you in charge of exactly who can see each Story. • Signal is built for your privacy. We know nothing about you or who you’re talking to. Our open source Signal Protocol means that we can’t read your messages or listen to your calls. Neither can anyone else. No back doors, no data collection, no compromises. • Signal is independent and not for profit; a different kind of tech from a different kind of organization. As a 501c3 nonprofit we are supported by your donations, not by advertisers or investors. • For support, questions, or more information please visit To check out our source code, visit Follow us on Twitter @signalapp and Instagram @signal_app


Rated 4.75 out of 5 stars by 704,963 users

Version Info

  • Current Version 7.4
  • Last Updated 27 Mar 24
  • First Released 29 Jul 14
  • Minimum iOS Version 13.0
  • Device Models Supported 93

App Details

  • IPA Size 137.49 Mb
  • Price Free (USD)
  • Age Advisory 12+
  • Supported Languages 41
  • Developer Signal Messenger, LLC
  • Bundle ID org.whispersystems.signal


Signal Docker

Container Info


A TLS proxy relay for the Signal privacy messenger app.


Run Command

docker run -d \ 

Compose File

version: 3.8
    image: undefined
    restart: undefined

Signal Socials

Signal Reviews

More Encrypted Messaging

  • Session is a fork of Signal, however unlike Signal it does not require a mobile number (or any other personal data) to register, instead each user is identified by a public key. It is also decentralized, with servers being run by the community though Loki Net, messages are encrypted and routed through several of these nodes. All communications are E2E encrypted, and there is no meta data.

  • XMPP, also known as Jabber, is an open standard for decentralized messaging that has been widely used for decades. It has actually been the basis upon which WhatsApp, Facebook's Chat and Google's Talk were built, but these companies (eventually) chose to remove the interoperability with other servers. Prominent XMPP clients support OMEMO end-to-end encryption, which is based on the Double Ratchet Algorithm that is used in Signal. For more hands-on information and to register an account you can visit JoinJabber.

  • Matrix is a decentralized open network for secure communications, with E2E encryption with Olm and Megolm. Along with the Element client, it supports VOIP + video calling and IM + group chats. Since Matrix has an open specification and Simple pragmatic RESTful HTTP/JSON API it makes it easy to integrates with existing 3rd party IDs to authenticate and discover users, as well as to build apps on top of it.

About the Data: Signal


You can access Signal's data programmatically via our API. Simply make a GET request to:

The REST API is free, no-auth and CORS-enabled. To learn more, view the Swagger Docs or read the API Usage Guide.

About the Data

Beyond the user-submitted YAML you see above, we also augment each listing with additional data dynamically fetched from several sources. To learn more about where the rest of data included in this page comes from, and how it is computed, see the About the Data section of our About page.

Share Signal

Help your friends compare Encrypted Messaging, and pick privacy-respecting software and services.
Share Signal and Awesome Privacy with your network!

View Encrypted Messaging (4)