Signal Private Messenger App

Signal Private Messenger App

reviewed by Jake Hopkins
Category Communication
Developer Signal Foundation
Size 50.15 MB
Platform Android, iOS
Updated 17th January 2024
Reviewer Jake Hopkins

Signal Private Messenger App Review

In today's digital age, the need for secure and private communication has become more crucial than ever. Enter Signal Private Messenger, a messaging app that prioritizes users' privacy and security without compromising on functionality. In this comprehensive review, we will delve into the features, usability, safety measures, pros and cons, cost, and comparison with other messaging apps.

Whether you're a privacy-conscious individual, a business professional, or simply curious about the latest in secure communication technology, this article will provide you with all the essential information you need to make an informed decision about Signal Private Messenger.

What Is Signal Private Messenger?

Signal Private Messenger is a secure and privacy-focused messaging app developed by the Signal Foundation, designed to offer encrypted online communication through its app and Signal Desktop platform.

It uses end-to-end encryption to protect users' conversations from unauthorized access, ensuring that only the intended recipients can read the messages. The Signal Foundation, a non-profit organization, oversees the development and maintenance of the app, prioritizing user privacy and data protection.

Signal Private Messenger is available on various platforms, including iOS, Android, and Signal Desktop, allowing users to seamlessly switch between devices while maintaining the same level of security and privacy.

What Are The Features Of Signal Private Messenger?

Signal Private Messenger offers a myriad of features, including end-to-end encryption for messaging and calls, support for group chats, voice calls, video calls, and a user-friendly interface, all built on the secure Signal Protocol and open-source technology.

The strong emphasis on security and privacy make Signal a trustworthy messaging platform. Its end-to-end encryption ensures that only the sender and receiver can read the messages. The secure Signal Protocol is utilized for secure communication, providing users with a heightened sense of privacy. Its open-source nature allows for transparency, enabling users to verify the security of the platform.

The user-friendly interface makes it easy to navigate through the various functionalities, ensuring a seamless and intuitive experience for its users.

How To Use Signal Private Messenger?

Using Signal Private Messenger involves downloading the app, setting it up, adding contacts, creating groups, and utilizing its secure messaging features, both on the app and Signal Desktop, for a comprehensive online communication experience.

Once the Signal Private Messenger app is downloaded from the Google Play Store or Apple App Store, the setup process involves verifying your phone number, setting a profile picture, and enabling security features like registration lock.

Adding contacts is easy - simply grant the app permission to access your contacts and it will automatically display the contacts who are also using Signal. From there, you can easily create groups for secure group messaging.

Signal also offers the Signal Desktop app, which syncs your conversations across devices seamlessly, providing a convenient way to chat securely from your computer.

Downloading And Setting Up The App

To begin using Signal Private Messenger, users need to download the app from the respective app store, and then proceed with the setup process, which involves account verification and configuring security settings to ensure encrypted messaging through the Signal Protocol.

Upon installing the app, users are prompted to verify their phone number to create an account, ensuring secure authentication. Once verified, users can then access the app's advanced security features, such as enabling disappearing messages, screen security, and registration lock. These settings provide an additional layer of protection, preventing unauthorized access to private conversations, and enhancing the overall privacy and security of the messaging experience.

Signal's end-to-end encryption ensures that only the intended recipients can read messages, and any data stored on the device is also encrypted, further bolstering the security measures of the app.

Adding Contacts And Creating Groups

Once the setup is complete, users can add contacts to their Signal app and create secure groups for private communication, utilizing features such as Signal Group Link and the encrypted communication protocol to maintain privacy and security.

Adding contacts in Signal is a straightforward process, involving simply syncing the app with the device's contacts and inviting others to join. The built-in Signal Group Link feature enables easy group creation by generating shareable links, simplifying the process of adding participants.

Signal's encrypted protocol ensures that all communication within the app is secure, protecting user data and conversations from unauthorized access or interception. These robust security measures make Signal an ideal choice for individuals and organizations seeking a trusted platform for confidential group communication.

Sending Messages And Making Calls

Using Signal Private Messenger allows users to send encrypted messages, make secure voice calls, and engage in protected video calls, all while receiving notifications and maintaining the integrity of the communication through its robust encryption and security measures based on the Signal Protocol.

The app employs end-to-end encryption for messages, ensuring that only the intended recipient can decrypt and read them. Voice calls are also encrypted, safeguarding the privacy of the conversation. Video calls, too, are protected, allowing users to communicate with peace of mind.

Signal's notification system is designed to provide alerts without compromising the security of the communication, bolstering the overall user experience with its uncompromising dedication to privacy and security.

Is Signal Private Messenger Safe?

Signal Private Messenger prioritizes safety with its robust end-to-end encryption, added security features such as screen security, registration lock, and Signal PIN verification, ensuring a secure and private online communication experience for its users.

This level of security enables users to have peace of mind knowing that their conversations, calls, and media exchanges are protected from unauthorized access. The incorporation of screen security prevents unauthorized individuals from accessing the app without permission. The registration lock feature further enhances security by preventing unauthorized attempts to register a device with Signal, while the Signal PIN verification provides an extra layer of authentication for user accounts.

End-to-end Encryption

The core of Signal Private Messenger's safety lies in its end-to-end encryption, which ensures that messages, calls, and shared media remain secure and private due to the robust Signal Protocol and encryption mechanisms, backed by user verification processes.

This encryption system employs cryptographic techniques that scramble data at the sender's end and can only be decrypted by the intended recipient, guaranteeing that even Signal itself cannot access the message content. The Signal Protocol, developed by Open Whisper Systems, further enhances security by enabling perfect forward secrecy, preventing decryption of past communications, even if one's private keys are compromised.

User verification, including safety numbers and QR code scanning, adds an extra layer of assurance to the communication, thwarting any potential interception or eavesdropping attempts.

Disappearing Messages

Signal Private Messenger offers the option for disappearing messages, enhancing privacy and security by allowing users to set a time limit for message retention, ensuring that sensitive information remains transient and confidential within the app.

This feature acknowledges the significance of data privacy and security by automatically removing messages after a specified duration, thus reducing the risk of sensitive information lingering on devices or servers. By integrating robust encryption protocols, Signal ensures that these disappearing messages are also protected from unauthorized access, further fortifying user privacy. Such measures not only align with Signal's commitment to user confidentiality but also provide a valuable tool for managing sensitive communications in a secure and private manner.

Screen Security

Signal Private Messenger prioritizes screen security, offering measures to prevent unauthorized access to the app, adding an extra layer of privacy and security to the user's communication and sensitive data.

By integrating end-to-end encryption, Signal ensures that messages, calls, and shared media remain confidential and inaccessible to unauthorized parties. The app implements features like screen lock with PIN, fingerprint, or facial recognition, enabling users to secure their conversations and prevent unauthorized access even if the device is unlocked. These robust security measures play a crucial role in protecting users' privacy by safeguarding their communication from potential threats and breaches.

Registration Lock

The registration lock feature in Signal Private Messenger adds an extra layer of security, requiring a Signal PIN to re-register the app, thus preventing unauthorized access and ensuring a secure user verification process.

This feature significantly enhances the encryption and privacy measures within Signal, as it protects user data even if the device falls into the wrong hands. By mandating the Signal PIN for re-registration, it serves as a crucial tool in preventing unauthorized account takeovers and impersonation. This mechanism mirrors the importance of robust user authentication, ensuring that only the rightful owner can access their own account, thereby fortifying the overall security posture of the app.

What Are The Pros And Cons Of Using Signal Private Messenger?

Signal Private Messenger offers a range of advantages, including high levels of security and privacy, an easy-to-use interface, cross-platform compatibility, along with dedicated support and an active user community.

On the flip side, some users may find the app lacking in advanced features such as stickers and gifs, which are commonplace in other messaging platforms. While Signal promotes secure communication with end-to-end encryption, some concerns have been raised about metadata collection, although the company has a transparent privacy policy.

It's worth noting that Signal relies on phone numbers for registration, which may raise privacy concerns for some users. Despite these potential limitations, the app continues to gain popularity due to its focus on privacy and security.


Signal Private Messenger is appreciated for its high level of security and privacy, an easy-to-use interface, and cross-platform compatibility, along with continuous updates, dedicated support, and an active user community that contributes to its dynamic ecosystem.

These features make Signal Private Messenger a popular choice for individuals and businesses seeking reliable and secure communication. The app's commitment to transparency and open-source development generates trust among its user base, fostering a strong sense of community. The platform's encryption protocols and privacy policy ensure that users' data is safeguarded at all times, further enhancing its appeal in an era where privacy concerns are paramount.

Signal's seamless integration across multiple devices and operating systems also sets it apart, enabling users to communicate effortlessly regardless of their preferred platform or device.


Signal Private Messenger may have limitations in terms of the features it offers compared to other messaging apps, and the requirement for a phone number during registration, which may be perceived as a downside by some users.

While Signal Private Messenger's focus on privacy and security is commendable, its feature set may not be as extensive as other popular messaging apps. For instance, it lacks the variety of stickers and customization options that users might find in apps like WhatsApp or Facebook Messenger. The requirement for a phone number during registration could be a barrier for individuals prioritizing anonymity.

Although Signal has a dedicated user base, some may find its lack of integrated support for third-party services, like payment or scheduling apps, as a drawback compared to its competitors."

Is Signal Private Messenger Free?

Yes, Signal Private Messenger is free to use and does not involve any subscription fees, providing a secure and private communication platform at no cost to its users.

Users appreciate the fact that they can enjoy all the benefits of Signal's secure messaging without having to worry about recurring payments or hidden charges. This approach aligns with Signal's commitment to making privacy accessible to everyone, without any financial barriers. This free and transparent model has contributed to the widespread adoption of Signal as a trusted platform for confidential conversations.

How Does Signal Private Messenger Compare To Other Messaging Apps?

Signal Private Messenger distinguishes itself from other messaging apps like WhatsApp, Telegram, and iMessage through its focus on security, privacy, and encrypted communication, offering a unique alternative in the realm of secure online messaging.

Signal's commitment to user privacy includes end-to-end encryption for all communications, providing users with peace of mind knowing that their conversations are protected from unauthorized access. Unlike WhatsApp and Telegram, Signal is open-source, allowing for greater transparency and community-driven development. Signal does not store user metadata, ensuring a higher level of anonymity. These features set Signal apart in the competitive landscape of messaging apps, making it a compelling choice for those seeking a secure and private communication platform.

Signal Vs WhatsApp

When comparing Signal Private Messenger to WhatsApp, the key distinction lies in the approach towards encrypted and secure messaging, making Signal a preferred choice for users seeking a heightened level of privacy and security in their communication app.

While WhatsApp offers end-to-end encryption, Signal takes an extra step by encrypting not only the message content but also the sender and recipient information. This level of security has garnered a loyal user base, including tech experts and privacy advocates.

On the other hand, WhatsApp boasts a larger user base, leveraging its integration with Facebook for a seamless social media experience. Concerns about data privacy have led many users to explore alternative messaging platforms like Signal for a more secure communication environment."

Signal Vs Telegram

In contrast to Telegram, Signal Private Messenger stands out for its focus on encrypted and secure messaging, providing a distinct communication app that prioritizes privacy and security for its user base.

Signal Private Messenger, endorsed by privacy advocates and security experts, has gained a reputation for its robust encryption protocols and commitment to protecting user data. With its open-source encryption technology and strong stance on data privacy, Signal has garnered a loyal user base seeking a messaging platform that values their security.

On the other hand, Telegram boasts a larger user base and a more extensive array of features, but has faced scrutiny for its encryption methods and data protection policies.

Signal Vs iMessage

When comparing Signal Private Messenger to iMessage, the focus on encrypted and secure messaging sets Signal apart as a dedicated communication app that caters to users seeking enhanced privacy and security in their messaging experience.

Signal Private Messenger stands out due to its preference for end-to-end encryption as the default setting for all conversations. On the other hand, iMessage offers encryption, but it is not the default option, requiring users to activate it manually. This distinction underlines Signal's commitment to protecting user privacy, as it ensures that all messages, calls, and media shared are inherently secure.

Signal's user base consists of individuals who prioritize privacy and security, while iMessage caters more broadly to iPhone users seeking seamless messaging within the Apple ecosystem.

Final Thoughts and Recommendations

As the discussion draws to a close, it is evident that Signal Private Messenger's dedication to security, privacy, and user engagement makes it a compelling choice for individuals seeking secure and private online communication, thus deserving a strong recommendation for its valuable contributions to digital privacy.

Its end-to-end encryption ensures that only the intended recipients can access the messages, maintaining a high level of privacy. What sets Signal apart is its commitment to openness and transparency, engaging with the community to continuously improve its features. With an intuitive user interface and seamless integration, Signal offers a smooth and secure messaging experience. It has undoubtedly set a benchmark for other messaging platforms in terms of prioritizing user privacy.

Signal Private Messenger stands out as a reliable and conscientious choice for anyone valuing their digital privacy and security.

Signal Private Messenger Support and Community

Signal Private Messenger boasts a vibrant community and dedicated support system, ensuring regular updates and valuable assistance to its user base, fostering a robust and engaging environment for secure online communication.

This commitment to ongoing improvement and engagement is evident in the frequent updates that introduce new features and enhance security measures, providing assurance to users. Signal's dedicated support team is readily available to address any queries or concerns, creating a sense of reliability and trust.

The active user community further enriches the experience, with discussions, feedback, and shared experiences contributing to a collaborative atmosphere where individuals feel heard and valued.

Legal and Privacy Information

Signal Private Messenger adheres to a comprehensive privacy policy and legal framework, ensuring the safeguarding of user data and upholding stringent security measures, thus establishing a trustworthy and transparent platform for secure online communication.

The privacy policy of Signal Private Messenger is centered around the principle of giving users complete control over their data. It prohibits any unauthorized access to user information, and the app does not collect or store any user data. This aligns with Signal's commitment to respecting user privacy.

The legal framework governing Signal emphasizes compliance with global data protection laws, ensuring that user privacy is prioritized across jurisdictions, and any sharing of data is done so with explicit user consent and in accordance with the law.

Signal Private Messenger FAQs

Here are some frequently asked questions about Signal Private Messenger, covering topics such as security, privacy, user settings, and the Signal Protocol, providing valuable insights for users seeking comprehensive information about the app.

Is Signal Private Messenger truly secure? Yes, Signal is known for its end-to-end encryption, meaning that only the sender and recipient can access the content of the messages. Signal's code is open-source, allowing for independent verification of its security features. Users can also enable features such as disappearing messages, screen security, and registration lock to enhance their privacy.

The Signal Protocol, used to encrypt messages, ensures that even the messaging service provider cannot decipher the messages. These aspects make Signal a highly secure messaging app.

How to download and use

  1. Visit the app store link of your device below
  2. Download Signal Private Messenger App app
  3. Open Signal Private Messenger App on your device
  4. Follow the instructions on your screen

Jake Hopkins

Jake Hopkins is known for his well-rounded app reviews, blending technical acumen with a keen understanding of user needs. His approachable style makes complex app functionalities clear and relatable to both tech enthusiasts and casual users alike.

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