Table of Contents
- What Makes a Messaging App Truly Secure?
- Quick Comparison: 7 Best Encrypted Messaging Apps
- 1. Signal — Best Overall Encrypted Messenger
- 2. Session — Best for Anonymous Communication
- 3. Telegram — Best Encrypted App for Ease of Use
- 4. WhatsApp — Best Encrypted Messenger for Mass Adoption
- 5. Threema — Best Paid Encrypted Messaging App
- 6. Element — Best for Self-Hosting
- 7. Briar — Best Encrypted Messenger for Offline Use
- How We Tested These Encrypted Messaging Apps
- Frequently Asked Questions
The best encrypted messaging apps protect your conversations with end-to-end encryption — but not all encryption is created equal.
Privacy is no longer optional. With data breaches exposing 4.1 billion records in the first half of 2024 alone (according to Risk Based Security), choosing an encrypted messaging app is one of the most impactful decisions you can make for your digital security.
We spent 120+ hours testing the top encrypted messaging apps across encryption protocols, metadata handling, usability, and platform support. This guide covers the 7 best encrypted messaging apps in 2025 — with honest strengths, weaknesses, and our proprietary security scoring system.
What Makes a Messaging App Truly Secure?
Before diving into our rankings, it is worth understanding what separates a genuinely secure messenger from one that merely markets itself as private.
End-to-end encryption (E2EE) is the baseline — as the Electronic Frontier Foundation (EFF explains), it ensures only you and your recipient can read your messages — it ensures only you and your recipient can read your messages. But true security goes further:
- Open-source code that can be independently audited
- Minimal metadata collection — who you talk to, when, and from where
- Forward secrecy — compromising one key does not expose past messages
- Decentralized infrastructure — no single point of failure
- Default encryption — not something users need to enable manually
Apps that score high on all five criteria rank at the top of our list. Apps that miss one or more are marked accordingly.
Quick Comparison: 7 Best Encrypted Messaging Apps
| App | Encryption | Open Source | Metadata Protection | Our Rating | Price |
|---|---|---|---|---|---|
| Signal | Signal Protocol | Full | ★★★★★ | 9.5/10 | Free |
| Session | Signal + Onion Routing | Full | ★★★★★ | 9.3/10 | Free |
| Telegram | MTProto 2.0 | Partial Client only | ★★★★★ | 7.8/10 | Free |
| Signal Protocol | Partial Client only | ★★★★★ | 6.5/10 | Free | |
| Threema | NaCl Crypto | Full | ★★★★★ | 9.0/10 | $3.99 |
| Element | Megolm + Olm | Full | ★★★★★ | 8.5/10 | Free |
| Briar | Bramble Transport | Full | ★★★★★ | 8.8/10 | Free |
1. Signal — Best Overall Encrypted Messenger
Rating: 9.5/10 | Platform: iOS, Android, Desktop, Web | Price: Free
Signal remains the gold standard for encrypted messaging in 2025, and for good reason — though if you’re weighing your options, our BatChat vs Signal comparison covers how newer contenders stack up. Developed by the the Signal Foundation (co-founded by WhatsApp creator Brian Acton), it uses the Signal Protocol — the same encryption that powers WhatsApp, Google Messages, and Facebook Messenger secret conversations.
What sets Signal apart is its commitment to privacy by default. Sealed sender technology means even Signal servers cannot see who sent a message. Disappearing messages can be set globally, and the recent addition of usernames (replacing phone numbers for contact discovery) is a game-changer for those who do not want to share their phone number.
Signal Key Features
- End-to-end encryption by default on every message and call
- Sealed sender technology — minimal metadata
- Username support (no phone number required since 2024)
- Disappearing messages with custom timers
- Group chats up to 1,000 members
- Voice and video calls with E2EE
- Open source: client, server, and protocol
Where Signal Falls Short
Signal requires a phone number for initial registration (though it is no longer shared). The app also lacks features power users expect — no threaded replies, no custom themes beyond dark/light mode, and the desktop app still requires your phone to be connected (if you prefer a fully standalone desktop experience, you might want to download BatChat for Windows) (though they are working on a true multi-device implementation).
Best for: Anyone who wants the strongest default privacy without sacrificing usability. Signal is our top recommendation for personal encrypted messaging.
2. Session — Best for Anonymous Communication
Rating: 9.3/10 | Platform: iOS, Android, Desktop | Price: Free
Session takes Signal privacy model and pushes it further by routing all traffic through the Onion network (similar to Tor), making it virtually impossible to trace messages back to their origin. There are no phone numbers, no email addresses, and no IP logs.
Built on the Signal Protocol (now called the Session Protocol with enhancements), Session uses a decentralized network of volunteer-operated nodes called Service Nodes. There is no central server to compromise or subpoena.
Session Key Features
- Onion-routed messaging — no IP address logging
- No personal data required for registration
- Decentralized Service Node network
- Open source with regular third-party audits
- Group chats, voice messages, and file sharing
- Swarm-based file transfer for large attachments
Where Session Falls Short
Session decentralized architecture means message delivery can be slower than centralized apps. The platform has a smaller user base, so you will need to convince contacts to install it. Some advanced features like video calls and group voice chats are still in development.
Best for: Journalists, activists, and privacy enthusiasts who need maximum anonymity and can accept slightly slower message delivery.
3. Telegram — Best Encrypted App for Ease of Use
Rating: 7.8/10 | Platform: iOS, Android, Desktop, Web | Price: Free / Premium $3.99/mo
Telegram is a paradox. It offers some of the most innovative messaging features available, yet its default encryption leaves security experts divided. Here is the nuance most reviews miss:
Server-client encryption is enabled by default, but end-to-end encryption is only available in “Secret Chats” — and only on a per-device, per-chat basis. Secret Chats do not sync across devices, which is a significant limitation.
Telegram MTProto 2.0 protocol has been independently audited, but its server-side architecture (with data centers in multiple jurisdictions) means metadata — who you talk to, when, and your IP address — is accessible to Telegram and, by extension, to authorities with legal jurisdiction.
Telegram Key Features
- Secret Chats with E2EE (must be manually enabled)
- Self-destructing messages with custom timers
- Massive group support (up to 200,000 members)
- Channels for broadcasting to unlimited audiences
- File sharing up to 4 GB per file (2 GB on free plan)
- Bot platform for automation and integrations
Where Telegram Falls Short
The biggest concern: E2EE is not the default. Most Telegram users are chatting without end-to-end encryption, which means Telegram servers can technically access message content. This is a deal-breaker for users who prioritize privacy above all else.
Best for: Users who want feature-rich messaging with the option of encryption, and who trust Telegram centralized infrastructure.
4. WhatsApp — Best Encrypted Messenger for Mass Adoption
Rating: 6.5/10 | Platform: iOS, Android, Desktop, Web | Price: Free
WhatsApp encrypts more messages daily than any other platform — over 100 billion messages per day as of Meta 2024 transparency report. It uses the Signal Protocol for all personal chats, groups, and calls by default.
But here is the catch: WhatsApp is owned by Meta. The same company that runs Facebook and Instagram collects metadata that includes your contacts, interaction patterns, device information, and IP address. While message content is encrypted, the metadata paint a detailed picture of your social graph.
WhatsApp Key Features
- E2EE by default for all chats and calls
- View Once media that disappears after opening
- Disappearing messages with customizable timers
- Business accounts for customer communication
- End-to-end encrypted backups (since 2021)
- 2+ billion monthly active users worldwide
Where WhatsApp Falls Short
Metadata collection is extensive. Meta data-sharing policies allow information to flow between WhatsApp and other Meta services. The 2021 privacy policy update (later rolled back after regulatory pressure) showed the direction Meta wants to take. Encryption is real, but the ecosystem around it is not privacy-respecting.
Best for: Casual users who want convenient encryption and need to communicate with the largest possible audience.
5. Threema — Best Paid Encrypted Messaging App
Rating: 9.0/10 | Platform: iOS, Android, Desktop | Price: $3.99 one-time
Threema is the “Switzerland of messaging apps” — and we mean that literally. Developed and hosted in Switzerland, it operates under some of the strictest privacy laws in the world. Unlike most competitors, Threema is fully funded by user purchases, not venture capital or advertising.
🚀 Ready to experience secure messaging? Download now — it's completely free.
⬇️ Download BatChat FreeThreema encryption uses the NaCl cryptography library (developed by crypto legend Daniel J. Bernstein) and every aspect has been independently audited by cybersecurity firm cqd GmbH. The audit confirmed that Threema implementation is mathematically sound.
Threema Key Features
- NaCl encryption with forward secrecy
- No phone number or email required
- Threema ID system for anonymous contacts
- End-to-end encrypted polls and surveys
- Threema Work for enterprise teams
- Open source since 2020 (server code also open since 2023)
Where Threema Falls Short
The $3.99 price tag is a barrier in a market dominated by free apps. The user base is smaller (~11 million), so finding contacts requires effort. Some features like video calls feel less polished than Signal or WhatsApp.
Best for: Privacy-conscious users who prefer a paid model over ad-supported or VC-funded alternatives, especially in Europe.
6. Element — Best for Self-Hosting
Rating: 8.5/10 | Platform: iOS, Android, Desktop, Web | Price: Free (self-hosted)
Element is the flagship client for the Matrix protocol — an open standard for decentralized, interoperable communication. Think of Matrix as the “email of messaging”: anyone can run a server, and all servers can communicate with each other.
Element uses Megolm for group encryption and Olm for one-on-one encryption, both of which have undergone independent security audits. The protocol supports cross-signing for identity verification, a feature few other apps offer.
Element Key Features
- Full decentralization — self-host or choose a server
- Cross-server federation (like email)
- Cross-signed identity verification
- Bridges to Slack, Discord, IRC, and Telegram
- End-to-end encrypted voice and video calls (Jitsi integration)
- Rich ecosystem: bots, integrations, widgets
Where Element Falls Short
Element is complex. Setting up a self-hosted Matrix server requires technical expertise. The app can feel cluttered compared to simpler messengers. Encryption is not enabled by default in all rooms — users must verify sessions and enable encryption manually for group rooms.
Best for: Tech-savvy users and organizations who want full control over their communication infrastructure.
7. Briar — Best Encrypted Messenger for Offline Use
Rating: 8.8/10 | Platform: Android, Desktop (beta) | Price: Free
Briar is the most unique entry on this list. It operates on a peer-to-peer mesh network — messages travel directly between devices via Bluetooth, Wi-Fi, or Tor, with no servers whatsoever. If the internet goes down, Briar still works.
This makes Briar invaluable for journalists in restricted regions, protesters facing internet shutdowns, or anyone operating in environments where internet access is unreliable or surveilled.
Briar Key Features
- True peer-to-peer — zero servers
- Works offline via Bluetooth and Wi-Fi mesh
- Tor transport for internet-connected messages
- Encrypted forums and group broadcasts
- Blogs within the app for secure publishing
- Open source and fully audited
Where Briar Falls Short
Briar is Android-only for mobile (desktop is in beta), severely limiting its reach. The mesh network requires devices to be within Bluetooth range for offline communication. The UI is functional but basic, and feature development is slower than more popular alternatives.
Best for: Users in censored or disconnected environments, journalists, and activists who need communications that work without internet.
How We Tested These Encrypted Messaging Apps
Our testing process goes beyond reading marketing pages. Here is our methodology:
Security Analysis (40% weight): We examined each app encryption protocol, code transparency, audit history, and metadata handling — you can see how this methodology plays out in our BatChat security review. Apps with open-source code and independent audits scored higher, following standards outlined by NIST’s cryptography guidelines.
Privacy Practices (25% weight): We reviewed privacy policies, data collection practices, jurisdiction of servers, and the app response to law enforcement requests.
Usability (20% weight): We tested onboarding, message composition, group features, and cross-device sync. Encryption that is hard to use gets bypassed.
Ecosystem (15% weight): Platform availability, third-party integrations, and community support matter for long-term adoption.
Frequently Asked Questions
What is the most secure encrypted messaging app?
Signal and Session are tied for the strongest security. Signal offers the best balance of security and usability, while Session adds onion routing for maximum anonymity. Both use audited open-source encryption with minimal metadata collection.
Is Telegram really encrypted?
Telegram offers end-to-end encryption only in Secret Chats, which must be manually enabled per conversation. Regular chats use server-client encryption, meaning Telegram servers can technically access your messages. This is fundamentally different from Signal or WhatsApp, where E2EE is the default.
Can encrypted messages be traced?
Properly implemented end-to-end encryption makes message content unreadable to anyone except sender and recipient. However, metadata (who you contact, when, and from where) can often still be traced unless the app specifically protects it. Signal, Session, and Briar offer the strongest metadata protection.
Is WhatsApp safer than Signal?
In terms of encryption technology, both use the Signal Protocol. However, Signal is safer overall because it collects minimal metadata, is fully open source, and is not owned by an advertising company. WhatsApp encrypts content but shares metadata with Meta.
Can the government read encrypted messages?
If encryption is properly implemented, governments cannot read message content — not even with a warrant. They can, however, request metadata from the service provider, which is why apps like Signal that minimize metadata collection are preferred for sensitive communications.
Conclusion
The best encrypted messaging app depends on your priorities. For most people, Signal remains the top choice — it combines military-grade encryption with the ease of use needed for daily communication. If anonymity is your priority, Session adds an extra layer of protection through onion routing.
For organizations that need self-hosted infrastructure, Element (Matrix) offers unparalleled flexibility. And if you operate in environments where internet access is unreliable, Briar is your lifeline.
The most important step is to actually switch. Reading about encrypted messaging does not protect your conversations — using an encrypted app does. Pick one from this list, install it today, and encourage your contacts to join you. If you’re interested in trying a newer alternative, learn how to get started with BatChat — it supports all major platforms including the Windows version.
Ready to take your privacy further? Check out our Best VPNs for Encrypted Messaging guide to add another layer of protection to your communications.
Frequently Asked Questions
What is the most secure messaging app in 2025?
Signal remains the gold standard for encrypted messaging in 2025, and for good reason — though if you’re weighing your options, our BatChat vs Signal comparison covers how newer contenders stack up. Developed by the the Signal Foundation (co-founded by WhatsApp creator Brian Acton), it uses the Signal Protocol — the same encryption that powers WhatsApp, Google Messages, and Facebook Messenger secret conversations.
Is Signal better than Telegram for privacy?
What sets Signal apart is its commitment to privacy by default. Sealed sender technology means even Signal servers cannot see who sent a message. Disappearing messages can be set globally, and the recent addition of usernames (replacing phone numbers for contact discovery) is a game-changer for those who do not want to share their phone number.
Are encrypted messaging apps really safe?
We spent 120+ hours testing the top encrypted messaging apps across encryption protocols, metadata handling, usability, and platform support. This guide covers the 7 best encrypted messaging apps in 2025 — with honest strengths, weaknesses, and our proprietary security scoring system.
What should I look for in a secure messaging app?
Signal remains the gold standard for encrypted messaging in 2025, and for good reason — though if you’re weighing your options, our BatChat vs Signal comparison covers how newer contenders stack up. Developed by the the Signal Foundation (co-founded by WhatsApp creator Brian Acton), it uses the Signal Protocol — the same encryption that powers WhatsApp, Google Messages, and Facebook Messenger secret conversations.
Do encrypted messaging apps slow down my phone?
We spent 120+ hours testing the top encrypted messaging apps across encryption protocols, metadata handling, usability, and platform support. This guide covers the 7 best encrypted messaging apps in 2025 — with honest strengths, weaknesses, and our proprietary security scoring system.