Speak Freely

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


"I use Signal every day."

Edward Snowden
Whistleblower and privacy advocate

"Signal is the most scalable encryption tool we have. It is free and peer reviewed. I encourage people to use it everyday."

Laura Poitras
Oscar-winning filmmaker and journalist

"I am regularly impressed with the thought and care put into both the security and the usability of this app. It's my first choice for an encrypted conversation."

Bruce Schneier
Internationally renowned security technologist

"After reading the code, I literally discovered a line of drool running down my face. It’s really nice."

Matt Green
Cryptographer, Johns Hopkins University

Why use Signal?

Explore below to see why Signal is a simple, powerful, and secure messenger

Share Without Insecurity

State-of-the-art end-to-end encryption (powered by the open source Signal Protocol) keeps your conversations secure. We can't read your messages or listen to your calls, and no one else can either. Privacy isn’t an optional mode — it’s just the way that Signal works. Every message, every call, every time.

Say Anything

Share text, voice messages, photos, videos, GIFs and files for free. Signal uses your phone's data connection so you can avoid SMS and MMS fees.

Speak Freely

Make crystal-clear voice and video calls to people who live across town, or across the ocean, with no long-distance charges.

Make Privacy Stick

Add a new layer of expression to your conversations with encrypted stickers. You can also create and share your own sticker packs.

Get Together with Groups

Group chats make it easy to stay connected to your family, friends, and coworkers.

No ads. No trackers. No kidding.

There are no ads, no affiliate marketers, and no creepy tracking in Signal. So focus on sharing the moments that matter with the people who matter to you.

Free for Everyone

Signal is an independent nonprofit. We're not tied to any major tech companies, and we can never be acquired by one either. Development is supported by grants and donations from people like you.