Signal delivers private messaging that simply works, offering everyday users robust security without complexity. This open-source application ensures your conversations, calls, and media stay strictly between you and your intended recipients. It is the ideal choice for individuals who prioritize their digital privacy and seek a reliable alternative to standard messaging apps.
End-to-End Encryption by Default
Every message and call made through Signal is protected by strong end-to-end encryption from the moment you send it. This fundamental security feature is always on, requiring no extra steps from you to activate it. You can communicate with confidence, knowing that only the people in the conversation can access the content.
Disappearing Messages for Added Privacy
For conversations that do not need a permanent record, Signal allows you to set messages to disappear. You can configure a timer for messages to vanish from both devices after they have been seen. This provides an extra layer of control over your chat history and sensitive information.
High-Quality Voice and Video Calls
Connect with anyone on your Signal contact list through crystal-clear voice and video calls. These conversations benefit from the same powerful encryption as your messages, ensuring your calls are private. The interface is straightforward, making it easy to switch between audio and video during a call.
Secure File and Media Sharing
Share photos, videos, documents, and other files directly within your chats with complete peace of mind. All shared media is encrypted during transfer, protecting your personal moments and important documents from interception. The process is as seamless as in any other modern messaging platform.
Open Source and Independently Audited
Signal’s codebase is open for public scrutiny, allowing security experts worldwide to verify its integrity. The app has undergone multiple independent security audits that confirm the strength of its encryption protocols. This transparency builds a high level of trust in the application’s security claims.
Data Minimization and Self-Destructing Media
You can send photos and videos that are set to be viewed only once before they disappear from the chat. Signal’s design philosophy is built on data minimization, meaning it collects virtually no user data. Your message metadata is also kept to an absolute minimum, protecting your identity and habits.
Frequently Asked Questions
Signal uses end-to-end encryption on all communications, meaning only you and the person you’re talking to can read messages or hear calls. The service is designed to have minimal access to your data, with no messages stored on its servers.
Yes, Signal is completely free to use. There are no subscriptions, fees, or in-app purchases. It is a non-profit project supported by grants and donations, which allows it to remain free for all users.
No, both parties need to have the Signal app installed to communicate. Standard SMS messages are not supported for non-Signal contacts, as this would break the end-to-end encryption model.
Your Signal messages are tied to your specific device for security. When you get a new phone, you will need to re-register your number and restore your messages from a local backup, if you created one on your previous device.
