Signal vs Session vs Telegram vs Nyra: an honest comparison

Published 31 August 2026. Written by the Nyra team.

Comparison pages written by the company being compared are usually sales pages wearing a lab coat. So, cards on the table first. Nyra is our app. It is in development, not launched, and not yet independently audited. Every other app here is real, shipping software you can install today. We wrote this page to be accurate anyway, because if we cannot be honest about our competitors, you should not trust anything else we say.

The short version

Signal: the gold standard

If you take one thing from this page, take this: Signal is the best private messenger you can install today, and for most people it is the right choice. The Signal Protocol is the most scrutinized messaging cryptography in existence, formally analyzed and independently audited many times over. Clients and server are open source, and the whole thing is run by a nonprofit whose subpoena responses have shown it holds almost nothing about its users. That track record is earned, not marketed.

Signal has one requirement that is a genuine problem for some people: you must register with a phone number. Since 2024 usernames can hide that number from other users, which helps, but the number still sits in your account, tied to your identity through your carrier. For a journalist's source, an activist under a hostile government, or anyone who does not want their real-world identity attached to their conversations, that single field is the whole problem. That gap is why Nyra exists. It is a gap, not a flaw: Signal made a deliberate trade for spam resistance and easy contact discovery, and it serves an enormous number of people well. If that one requirement is sending you elsewhere, we ranked the honest options in our guide to Signal alternatives.

Session: no phone number, but a real trade-off

Session deserves credit for proving that a messenger with no phone number can work at scale. Your identity is a random Session ID, registration asks for nothing personal, and messages route through a decentralized node network. The apps are open source and were independently audited in 2021.

The criticism is also real. Session replaced the Signal Protocol with its own Session Protocol and in doing so removed forward secrecy. Forward secrecy means that even if one of your keys leaks later, previously recorded messages stay unreadable. Without it, a single compromised key can retroactively expose past conversations an attacker captured along the way. Session argues the trade-off simplifies its decentralized design; the argument has not convinced most cryptographers. Also worth knowing: small closed groups are end-to-end encrypted, large public communities are not.

Telegram: a great cloud messenger, not a private one

Telegram is polished, fast, and genuinely excellent at what it is designed for: huge groups, channels, bots, and multi-device sync through the cloud.

But the popular belief that Telegram is an encrypted messenger in the same sense as Signal is wrong. Regular Telegram chats are not end-to-end encrypted. They are encrypted between your device and Telegram's servers, where they are stored and technically readable by the service. Only secret chats are end-to-end encrypted, and they must be started manually, work only one-to-one, and do not sync across devices. Group chats are never end-to-end encrypted. The client apps are open source, the server is not, and Telegram's homegrown MTProto protocol has received academic analysis but nothing like the audit depth of the Signal Protocol. If your threat model is "unreadable by everyone except the recipient," Telegram's defaults do not deliver it.

A word on SimpleX

SimpleX goes further than any app here on one axis: it has no user identifiers at all, not even a username. Contacts connect through one-time links or QR codes, and each conversation runs over its own message queues, which makes it hard for a server to correlate your conversations with each other. It is open source, audited, and has forward secrecy. The trade is usability: no stable identity means adding contacts and moving between devices takes more effort than most people will tolerate. If you want the strongest identifier-free design available today and are willing to work for it, SimpleX is a serious, honest option.

Where Nyra fits

Nyra is our attempt to hold two lines at once: the proven cryptography and familiar feel of Signal, and registration that asks for nothing. Your identity is a username plus keys derived from a recovery phrase. No phone number, no email, ever. Messages use X3DH and the Double Ratchet, the same construction Signal pioneered, built on independently audited cryptographic primitives, with forward secrecy intact. The app build already includes the dead switch, locked and hidden chats, passphrase-encrypted local backup, and end-to-end encrypted media; the product itself remains unreleased. Our security page explains exactly how.

Messages disappear by default after 7 days, because ephemerality should be the normal state of a conversation, not a setting you remember to find. And rather than promising zero metadata, which no relay server can honestly promise, we publish exactly what our server can and cannot see.

The honest caveats, stated plainly: Nyra is in development, so you cannot install it today. The code is not yet public. The independent audit is planned before launch, meaning it has not happened yet. And if you lose your recovery phrase, your account is gone forever. There is nothing to reset it with, and nobody can restore it, including us.

Which should you pick?

• Most people, today: Signal. Mature, audited, free, excellent. If everyone you care about moved to Signal tomorrow, the world would be better off.
• You need no phone number, today: Session if you accept the loss of forward secrecy, or SimpleX if you want stronger properties and can live with the rougher experience.
• Big groups, channels, and bots: Telegram, treated as a social platform rather than a private channel, since its default chats are not end-to-end encrypted.
• Signal-style cryptography with no phone number and disappearing messages by default: that is what Nyra is being built for. Join the waitlist and judge it when it ships.

If you want this decision made across the wider field, including WhatsApp and Threema, our guide to encrypted messaging apps in 2026 walks through every serious option app by app.

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