Most messaging apps treat privacy as a feature. Signal treats it as the entire point. It's the app security experts actually recommend - free, run by a non-profit, and encrypted end-to-end by default. The only real question is whether it's pleasant enough to use every day. We tested it as a primary messenger.
What is Signal?
Signal is a free, open-source messenger from the non-profit Signal Foundation. Every message, call and video chat is end-to-end encrypted by default, and it's engineered to collect as little metadata as possible - it genuinely doesn't know who you talk to.
Hands-on
The pleasant surprise is that Signal doesn't feel like a sacrifice. Texts, voice and video calls, group chats, disappearing messages, reactions and stickers all work the way you'd expect from a modern messenger. It's fast and clean. The recent addition of usernames means you no longer have to hand out your phone number to connect - a meaningful privacy upgrade.
The encryption is invisible in daily use, which is the point - you don't think about it, but every message is protected and the Foundation can't read your conversations or build a social graph from them. For sensitive conversations, that peace of mind is unmatched.
What stands out
- End-to-end encrypted by default. Every chat, call and video - no opt-in needed.
- Minimal metadata. Engineered to not know who talks to whom.
- Open-source & non-profit. No ads, no data business model.
- Usernames. Connect without sharing your phone number.
- Disappearing messages. Per-chat auto-delete timers.
How it compares
WhatsApp also encrypts messages end-to-end but is owned by Meta and collects more metadata. Telegram, despite its reputation, does NOT encrypt regular chats end-to-end by default. Signal beats both on privacy outright - the full breakdown is in our WhatsApp vs Telegram vs Signal comparison. Its only real drawback is a smaller user base.
Who should use it - and who shouldn't
Use it if you care about privacy at all - it's the easiest high-impact privacy upgrade you can make, and it's free.
The catch: your contacts need it too. The fix is simple - use Signal for anything sensitive and nudge the people who matter to install it.
Our verdict
Signal is the rare privacy tool that asks for almost no compromise: it's a genuinely good modern messenger that just happens to be the most private one available, and it's free. The only friction is getting your contacts on board. If you do one thing for your digital privacy this year, install Signal and move your sensitive conversations there.
Frequently asked questions
Is Signal really free?
Yes - completely free, with no ads. It's run by a non-profit and funded by donations.
Is Signal more private than WhatsApp?
Yes. Both encrypt messages end-to-end, but Signal collects far less metadata and isn't owned by an ad company.
Do I still need to share my phone number?
No longer - Signal now supports usernames, so you can connect without revealing your number.
What's the downside of Signal?
Mainly its smaller user base - your contacts need it too. It deliberately keeps fewer "social" features than Telegram.