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End-to-end encryption is the easy part of this category — most of these use the same protocol, and Signal wrote it. The hard part is metadata: whether the company running the service can see who you talk to, how often, and when. That is what surveillance actually consumes, and it is where these apps differ enormously.
SimpleX Chat76 The only messenger here with no user identifiers of any kind — no phone number, no username, not even a random account ID — so there is no social graph for anyone to seize, not even a hashed one.
Threema74 The pick for people who want Signal's guarantees without giving anyone a phone number, and who will pay six dollars once to get it.
The protocol everyone else copied, run by a non-profit with nothing to sell.
71
Owner
Signal Technology Foundation
Jurisdiction
United States · Five Eyes
No-logs audit
None — protocol audited by Independent third party, 2024
Price
—
Runs oniOSAndroidMacWindowsLinuxRouterBrowserTV
The correct default for almost everyone. The protocol it invented is the one WhatsApp and others licensed, sealed sender hides who is messaging whom from Signal itself, and its published subpoena responses show it holds an account creation date and a last-connection date and nothing more. A non-profit with no advertising, no investors and nothing to sell.
A phone number is still required to register, though usernames now mean you need not reveal it to contacts, and the servers are centralised in the United States.
Privacy & trust
62
Features
81
App quality
74
Support & refunds
55
The Signal Protocol is the reference standard and is used by WhatsApp and others under licence
Sealed sender hides who is messaging whom from Signal itself
Published subpoena responses show it holds almost no data
A phone number is still required to register
Centralised servers in the United States
Backups on iOS are awkward compared with rivals
Lab test pending — scored on public dataiOS app score 74/100 from 1,081,379 ratingsFull reviewVisit Signal
2
SimpleX Chat
The only messenger with no user identifiers at all, which is either the point or too much.
76
Owner
SimpleX Chat Ltd
Jurisdiction
United Kingdom · Five Eyes
No-logs audit
None — protocol audited by Trail of Bits, 2024
Price
—
Runs oniOSAndroidMacWindowsLinuxRouterBrowserTV
The only messenger here with no user identifiers of any kind — no phone number, no username, not even a random account ID — so there is no social graph for anyone to seize, not even a hashed one. Audited twice by Trail of Bits, with post-quantum key exchange and the option to run your own relays.
Connections are made by exchanging a one-time link or QR code, which is real friction, and the user base is small enough that nobody you know is likely on it.
Privacy & trust
60
Features
100
App quality
—
Support & refunds
55
No user IDs at all — no phone number, no username, not even a random account identifier
Audited twice by Trail of Bits
You can run your own relay servers
Connections are made by sharing a one-time link or QR code, which is real friction
Small user base, so there is likely nobody you know on it
Swiss, paid once, and it never learns your phone number.
74
Owner
Threema GmbH
Jurisdiction
Switzerland · Outside the alliances
No-logs audit
None — apps audited by Cure53, 2024
Price
from $5.99/mo
Runs oniOSAndroidMacWindowsLinuxRouterBrowserTV
The pick for people who want Signal's guarantees without giving anyone a phone number, and who will pay six dollars once to get it. Swiss, outside the intelligence alliances, open source since 2020, regularly audited, and funded by a single purchase rather than advertising or subscriptions.
Costs money, which limits who you can persuade to install it, and the user base outside German-speaking Europe is small.
Privacy & trust
76
Features
87
App quality
78
Support & refunds
20
No phone number or email needed — you get a random Threema ID
Swiss jurisdiction, outside the alliances
Open source since 2020 and regularly audited
Costs money, which limits who you can persuade to install it
Small user base outside German-speaking Europe
No disappearing messages
Lab test pending — scored on public dataiOS app score 78/100 from 703 ratingsVisit Threema
4
Element (Matrix)
Federated like email, encrypted by default, and the server still sees who talks to whom.
63
Owner
Element Software Ltd
Jurisdiction
United Kingdom · Five Eyes
No-logs audit
None — protocol audited by Least Authority, 2022
Price
—
Runs oniOSAndroidMacWindowsLinuxRouterBrowserTV
The answer when you want a messenger nobody can switch off: Matrix is federated like email, so you can run your own server and remain reachable. Encryption is on by default in private rooms, no phone number is needed, and several European governments run it internally for exactly this reason.
The homeserver sees metadata — who talks to whom and when — and key management still confuses newcomers.
Privacy & trust
52
Features
77
App quality
60
Support & refunds
55
Federated: run your own server and nobody can cut you off
No phone number required
Bridges to IRC, Slack, Discord and others
The homeserver sees metadata: who talks to whom, and when
Encryption is on by default only in new private rooms
Key management and device verification confuse newcomers
Lab test pending — scored on public dataiOS app score 60/100 from 150 ratingsVisit Element (Matrix)
5
Session
Onion-routed and account-free, with a cryptographic decision worth reading about first.
79
Owner
Session Technology Foundation
Jurisdiction
Switzerland · Outside the alliances
No-logs audit
None — protocol audited by Quarkslab, 2023
Price
—
Runs oniOSAndroidMacWindowsLinuxRouterBrowserTV
Onion-routed over a decentralised node network with no phone number and no email, so neither the network nor an operator sees your address. Moved to a Swiss foundation in 2024, which the project attributed to Australian encryption law.
It dropped perfect forward secrecy when it moved off the Signal Protocol, a genuine and much-argued trade-off, and it is tied to a cryptocurrency for node incentives.
Privacy & trust
78
Features
94
App quality
65
Support & refunds
55
No phone number and no email — an account is a random ID
Onion routing over a decentralised node network hides your address from the server
Swiss foundation since 2024
Dropped perfect forward secrecy when it moved off the Signal Protocol, a real and much-argued trade-off
Tied to a cryptocurrency for node incentives
Message delivery is slower than centralised rivals
Lab test pending — scored on public dataiOS app score 65/100 from 4,907 ratingsVisit Session
6
BR
Briar
Works with no internet at all, over Bluetooth or Wi-Fi. Built for the worst case.
70
Owner
Briar Project (non-profit)
Jurisdiction
United Kingdom · Five Eyes
No-logs audit
None — apps audited by Cure53, 2017
Price
—
Runs oniOSAndroidMacWindowsLinuxRouterBrowserTV
Built for the case where the network is against you: peer to peer over Tor with no servers at all, and it works over Bluetooth or local Wi-Fi with no internet whatsoever. During an internet shutdown it is one of the very few things that still functions.
Android and desktop only — Apple's platform rules make an iOS version unlikely — and both people must be online for messages to arrive.
Privacy & trust
62
Features
81
App quality
—
Support & refunds
55
Peer to peer over Tor, with no servers at all
Works over Bluetooth or local Wi-Fi with no internet
No accounts, no phone number, no metadata to seize
No iOS app, and Apple platform rules make one unlikely
Both people must be online for messages to arrive
No voice or video calls
Lab test pending — scored on public dataVisit Briar
Ordinary Telegram chats are not end-to-end encrypted, and most users believe they are. Secret Chats are, but they are one-to-one only, not the default, and unavailable in the desktop apps. Since 2024 Telegram hands user IP addresses and phone numbers to authorities on valid legal requests. Excellent app, widely misunderstood security.
The encryption is real — it is the Signal Protocol and Meta cannot read your messages. What Meta does collect is who you message, how often, when, your contact list and your device, linked to your other Meta accounts. If your concern is Meta, the encryption does not address it.
What we weighed for encrypted messengers, and the exact weights
Metadata, not just content
Message content is encrypted almost everywhere. Who you spoke to and when is what gets people arrested, and only a few of these apps are built so the operator cannot see it.
Encrypted by default
An app where encryption is a mode you must select protects the people who select it. Telegram is the reason this criterion exists.
Whether you can be identified to join
An app that requires a phone number links every conversation to a government-issued identity, which for some readers defeats the point entirely.
Who runs it, and what they published
Signal publishes its subpoena responses. Threema publishes a transparency report. Meta publishes a data-collection policy that describes what it takes. All three are informative.
Weights on this page: Privacy & trust 40% · Features 28% · App quality 16% · Support & refunds 10% · Price & renewal 6%. Formula.
Everyone encrypts content. Almost nobody hides metadata
Signal, WhatsApp, Threema, Element and SimpleX all encrypt message content end to end, and several of them use the protocol Signal wrote. On content, this category is close to solved.
Metadata is not. If an operator can see that account A messaged account B at 3am on Tuesday, forty times last month, that is often more useful to an investigator than the words. Intelligence agencies have said as much publicly.
So this page weighs metadata at the top:
Signal uses sealed sender, so its own servers cannot see who is sending to whom, and its published subpoena responses show what remains: a creation date and a last-connection date.
SimpleX has no user identifiers at all. There is no account to correlate, which is a stronger claim than any policy.
Threema issues a random ID instead of a phone number and runs its own Swiss servers.
Element encrypts content but the homeserver sees the graph — unless you run the homeserver.
WhatsApp collects the graph deliberately and links it to Meta’s other services.
Telegram holds ordinary messages in a form it can read, and since 2024 hands IP addresses and phone numbers to authorities on valid legal requests.
The Telegram problem
Telegram is a superb application. The apps are fast, the group and channel features are unmatched, and it is where enormous numbers of people already are.
It is also not an encrypted messenger in the way its reputation suggests. Ordinary chats are encrypted to Telegram’s servers, not between users. Secret Chats are end-to-end encrypted, but they are one-to-one, not the default, and absent from the desktop clients. MTProto, the home-grown protocol, has never received the scrutiny the Signal Protocol has.
In August 2024 its founder was arrested in France over alleged moderation failures, and Telegram subsequently changed its policy to provide user IP addresses and phone numbers to authorities on valid legal requests. That is a reasonable response to a real problem, and it is a significant change for anyone who chose Telegram believing otherwise.
Choosing by threat model
Ordinary privacy from advertisers and platforms: Signal. Nothing else combines the security and the reach.
You do not want to give out a phone number: Threema if you will pay once, SimpleX or Session if you will not.
You are worried about the social graph itself: SimpleX. No identifiers means nothing to correlate.
You cannot risk the service being blocked or shut down: Element with your own homeserver, or Briar, which needs no server at all.
The network itself may be cut: Briar, over Bluetooth or local Wi-Fi. It is the only thing here that works with no internet.
The network effect problem, and the answer to it
The best messenger is the one your contacts use, and for most people that is WhatsApp. This is a real constraint and telling people to abandon it is advice nobody follows.
The workable approach is to stop trying to migrate everyone and move only the conversations that need it. One private channel for the things that matter captures nearly all of the benefit, and Signal has enough users now that the ask is small. Leave WhatsApp installed for the school group.
What we have not tested
Everything here rests on published audits, protocol documentation, transparency reports and subpoena responses — which in this category is unusually strong evidence, because several of these organisations publish what was actually demanded of them. What we have not done is our own testing of metadata behaviour on the wire, and the App Store analysis for several of these apps is still pending. Both are noted where they affect a score.
Ordinary chats are not end-to-end encrypted — Telegram can read them
Frequently asked questions
What is the most secure messaging app in 2026?
Signal for almost everyone: the strongest combination of real security, published evidence about what it holds, and enough users that you can actually talk to people. SimpleX goes further on metadata than anything else, at the cost of usability and reach. Threema is the middle ground if you will pay to avoid giving a phone number.
Is Telegram encrypted?
Not by default. Ordinary chats, groups and channels are encrypted between you and Telegram's servers, which means Telegram can read them. Secret Chats are end-to-end encrypted, but they are one-to-one only, must be started deliberately, and do not exist in the desktop apps. This is the most widely believed falsehood in the category.
Is WhatsApp safe if Meta owns it?
Message content is genuinely end-to-end encrypted with the Signal Protocol, and Meta cannot read it. Metadata is a different question: Meta records who you message, how often, when, your contact list and your device, and links it to your other accounts. For most people that is an acceptable trade; for anyone whose concern is Meta specifically, it is the whole problem.
Why does needing a phone number matter?
A phone number in most countries is tied to government identification, so it links every conversation to a legal identity, and it exposes your number to anyone who has your contact. Signal's usernames fix the second problem but not the first. Threema, SimpleX, Session and Element need no number at all.
What does Signal actually hand over when subpoenaed?
It publishes the responses. What it has produced is the date an account was created and the date it last connected. Not messages, not contacts, not group memberships, not who you spoke to — because it does not have them. That published record is stronger evidence than any privacy policy in this category.
Should I switch everyone to Signal?
Switch the conversations that matter and stop trying to move everyone. Nearly all of the benefit comes from having one channel that is genuinely private for the things that need it. Deleting WhatsApp entirely is a bigger social cost than most people will accept, and it is not required to get the benefit.
