Signal

Signal is a secure messaging app built with privacy as its core focus, offering end-to-end encryption for all communications. It supports sending text, voice, and video messages, as well as sharing photos, videos, and files. Signal also includes features like group chats, voice and video calling, and disappearing Stories. The app is completely free, open-source, and free from ads or tracking.

Key Features in Detail:

End-to-End Encryption:
All messages and calls are protected so that only the sender and recipient can access them — not even Signal can view the content.

Free and Open Source:
Signal is entirely free to use, and its open-source codebase allows for public scrutiny and independent security audits.

Multimedia Messaging:
Users can exchange a variety of content types, including texts, voice notes, videos, images, and documents.

Group Communication:
Supports group chats with up to 1,000 members and group voice/video calls with up to 40 participants.

Disappearing Messages:
Messages can be configured to delete themselves after a set time, offering enhanced privacy control.

Secure Calls:
High-quality, encrypted voice and video calls are built directly into the platform.

Stories Feature:
Users can post temporary photo, video, or text updates that disappear after 24 hours, similar to other social apps.

In summary, Signal combines strong privacy protection with a broad set of communication features, making it a trusted choice for secure, ad-free messaging.