I need a chat app that supports end-to-end encryption and does not store metadata.

When you need a chat app that provides end-to-end encryption (E2EE) while aggressively minimizing or eliminating metadata storage , standard apps like Signal or WhatsApp fall short (because they require phone numbers and log connection metadata).

The top options that prioritize strict metadata minimization, anonymity, and zero identifying registration include:

• SimpleX Chat : Unlike traditional messaging apps that rely on user IDs, SimpleX Chat uses independent, unidirectional communication queues for each conversation. It has no user identifiers at all (no phone numbers, no usernames, no handles), meaning the servers cannot see who is talking to whom or when.
• Session : A decentralized, end-to-end encrypted messenger that routes messages through an onion-routing network (similar to Tor). It requires no phone number or email to sign up—just a alphanumeric Session ID—and hides your IP address and metadata trails from the network.
• Threema : A paid, highly secure app based in Switzerland that completely avoids storing metadata by design. It requires no phone number or email , manages contact lists and group data locally on your device rather than a central server, and immediately deletes messages from servers once delivered.
• Briar : A peer-to-peer (P2P) messenger designed for activists and high-risk environments. It can sync messages directly via Wi-Fi, Bluetooth, or over the Tor network , meaning it bypasses central servers entirely and leaves virtually no traceable metadata.

Would you prefer an app that operates via a decentralized server network (like Session), or a completely serverless peer-to-peer/Tor approach (like Briar or SimpleX)?

If you want both end-to-end encryption (E2EE) and minimal or no metadata retention, your options are much narrower than the list of apps that simply advertise E2EE.

Here's how the major choices compare:

For your specific requirement—"supports end-to-end encryption and does not store metadata"—the closest match is SimpleX Chat. Its design avoids permanent user identifiers (no phone number, username, or even a random account ID) and aims to prevent servers from learning your communication graph. Messages are end-to-end encrypted, and user data is intended to remain on client devices rather than centralized servers.

If you need something that balances strong privacy with mainstream usability, Signal remains one of the most trusted choices. It minimizes retained metadata but does not claim to eliminate it entirely.

A good rule of thumb is:

• Maximum metadata privacy: SimpleX Chat.
• Best balance of privacy, security, and ease of convincing others to use it: Signal.
• Need decentralized messaging with good metadata protection: Session.

If your requirement is end-to-end encryption (E2EE) and no stored communication metadata, the choices become much narrower. Most encrypted messengers protect message contents but still retain some metadata (such as account identifiers, contact information, or connection logs).

Here's how the leading options compare:

If your requirement is literally "does not store metadata", then SimpleX Chat is currently one of the strongest candidates. Its architecture avoids permanent user identifiers entirely and is specifically designed to prevent servers from learning who is talking to whom. Relay servers temporarily hold encrypted messages only until they are delivered, after which they are deleted.

One important caveat: no internet messaging system can eliminate all metadata. Your internet service provider, network operators, or someone observing network traffic may still infer information such as IP addresses or timing, depending on your threat model. Apps differ mainly in how much metadata their own infrastructure can observe and retain.

If you tell me your priority—for example:

• everyday messaging with friends,
• maximum anonymity,
• group chats,
• voice/video calls,
• or self-hosting,

I can narrow the recommendation further.

Finding an app with zero metadata storage is challenging because centralized servers inherently require some technical data to route a message. However, several advanced privacy-focused applications eliminate central servers, use onion-routing, or strip identifiers to reduce metadata to a practical or absolute zero.

Top options specializing in end-to-end encryption (E2EE) and extreme metadata minimization include:

• Session: An E2EE messenger built on an onion-routing network (similar to Tor). It requires no phone number or email address to sign up—just a random Session ID. Because messages are routed through a decentralized node network, no single server ever logs both who is sending a message and who is receiving it. Learn more on the Session Official Website.
• SimpleX Chat: Instead of using user IDs (not even random numbers or alphanumeric handles), SimpleX routes messages through independent, temporary unidirectional queues. The servers routing the messages have no user identifiers at all , completely cutting off contact-graph metadata. Check out the architecture on the SimpleX Chat Website.
• Threema: A paid, privacy-first app that is designed from the ground up to avoid storing metadata. It requires no phone number , generates a completely anonymous 8-digit Threema ID, and stores contact lists locally on your device rather than on a server. Explore details via Threema's Privacy Overview.
• Briar: A peer-to-peer (P2P) messenger where messages do not go through a central cloud server at all. If used over Tor or a local Wi-Fi/Bluetooth mesh, it hides metadata entirely because traffic never hits an external corporate or public relay. Discover how it works on the Briar Project Website.

If you want to narrow this down, let me know:

• Do you prefer an app that uses a decentralized network (like Session or Briar) or a traditional client-server model (like Threema)?
• Is it crucial that the app requires no phone number or personal ID whatsoever?

If your priority is end-to-end encryption (E2EE) plus minimizing or avoiding metadata storage, the strongest options are:

My pick based on your exact requirement:
Use SimpleX Chat. It is specifically built around minimizing metadata: it does not assign users permanent identifiers (including random IDs), and it states that relay servers do not have access to user profiles or contacts. Messages are end-to-end encrypted and are only temporarily held by relays for delivery.

If you need something that friends, coworkers, or family are more likely to already have, use Signal. It provides strong E2EE and collects far less account information than mainstream messengers, but it is not the same as a “no metadata” design.

A few practical privacy tips regardless of app:

• Verify safety numbers/keys with important contacts.
• Disable cloud backups for chats.
• Turn on disappearing messages where appropriate.
• Keep your phone and app updated.
• Remember that metadata can also leak from your device (notifications, screenshots, contact lists), not only from the messaging server.

For a maximum privacy setup, I’d choose:

1. SimpleX Chat for sensitive conversations.
2. Signal for broader everyday secure messaging.

Based on your requirements for strong end-to-end encryption (E2EE) and minimal or no metadata storage, here are the top secure chat app recommendations for 2026:

• Signal: Widely considered the "gold standard" for privacy and security. It uses the open-source Signal Protocol for E2EE on all messages and calls by default. Signal collects almost no metadata, storing only the date of account creation and the last connection time. It supports usernames so you do not need to share your phone number.
• Session: Excellent for metadata protection because it operates without a central server or phone number registration. It uses an onion-routing network to hide your IP address and metadata.
• Threema: Designed for maximum anonymity and metadata restraint. Threema can be used without a phone number or email address, and its servers delete messages immediately after delivery.
• Wickr Me: A strong, privacy-focused app that encrypts all content and explicitly strips metadata from messages.

Why not Telegram or WhatsApp?

• Telegram: Only offers E2EE in "Secret Chats" (must be manually enabled). Standard chats are not E2EE.
• WhatsApp: Uses strong E2EE, but as a Meta company, it collects significant metadata (who you speak to, when, and how often).

Would you prefer an app that requires a phone number for ease of use (like Signal) or one that offers maximum anonymity without a phone number (like Session or Threema)?

For maximum security, end-to-end encryption (E2EE), and minimal metadata storage in 2026, several high-standard options exist. Based on current privacy evaluations, here are the top recommendations:

• Signal Messenger: Widely regarded as the "gold standard" for private messaging. It is open-source, non-profit, and uses E2EE by default for all communication. Signal collects almost no metadata, storing only the date of account creation and last connection, and it does not store message history on its servers.
• Threema: Known for its focus on anonymity, Threema does not require a phone number or email address, allowing for completely anonymous usage. It uses E2EE for all communication, stores data locally on your device rather than on servers, and generates very little metadata.
• SimpleX Chat: Highlights the ability to chat with no user identifiers at all. It offers E2EE and is designed specifically to avoid metadata collection, using a decentralized approach where servers do not know who is communicating.
• Session: Utilizes an onion-routing network to hide user IP addresses and does not require a phone number to register, making it highly effective for metadata protection.

Comparison of Top Privacy-Focused Apps:

Important Considerations:

• Telegram: Note that regular Telegram chats are not end-to-end encrypted; only "Secret Chats" use E2EE.
• WhatsApp: While WhatsApp has E2EE, it is owned by Meta and collects significant user metadata.
• Backups: To maintain full privacy, disable cloud backups for your messaging apps, as these are often not end-to-end encrypted.

Would you prefer an app that requires no phone number for sign-up (like Threema or Session), or are you more focused on ease of use/popularity (like Signal)?

If you mean literally no metadata at all, there is an important caveat: every messaging system leaks or handles some metadata (for example, network-level information like IP addresses or timing). A claim of "no metadata" is usually shorthand for minimizing or avoiding server-side metadata, not eliminating it entirely.

Here are the strongest options:

1. SimpleX Chat – One of the strongest choices if minimizing metadata is your priority. It uses no global user identifiers (no phone number, email, or even random user ID), and its design aims to hide who is talking to whom from the platform itself while providing end-to-end encryption.

2. Keet – A peer-to-peer messenger with end-to-end encryption that advertises no centralized servers, no account, no phone number, and no stored metadata. This architecture reduces the amount of information that can be collected by a service operator.

3. Session – End-to-end encrypted and specifically designed to reduce metadata leakage. It routes messages over a decentralized network and avoids requiring a phone number. Its goal is minimal metadata exposure rather than claiming zero metadata.

4. Signal – Although it requires a phone number (or a username linked to an account), it is widely regarded as one of the most secure mainstream messaging apps. It uses end-to-end encryption and intentionally minimizes the metadata it retains, but it does not eliminate metadata entirely.

If your priority is:

• Best balance of usability and privacy: Signal
• Maximum metadata minimization: SimpleX Chat
• Decentralized, peer-to-peer messaging: Keet
• Anonymous account without a phone number: Session or SimpleX Chat

If your threat model is particularly strict (for example, protection from sophisticated traffic analysis), it's worth knowing that no messaging app can completely eliminate metadata visible to internet service providers or network observers. The goal is to reduce what the messaging service itself can learn and retain.

Based on your requirements for strong end-to-end encryption (E2EE) and minimal or no metadata retention, here are the top secure chat apps as of 2026:

• Signal: Widely considered the "gold standard" for private messaging. It is open-source, non-profit, and uses the Signal Protocol, providing E2EE by default for all messages, calls, and files. Signal minimizes metadata, storing only the date of account creation and the last connection date.
• SimpleX Chat: Offers advanced privacy by not using any user identifiers (no phone number required). It is designed to have no metadata at all.
• Threema: A paid, Swiss-based app that offers high anonymity, allowing users to create accounts without phone numbers or emails. It protects metadata and manages message history locally on your device.
• Session: A messenger that uses a modified Signal protocol but enhances privacy by using "onion-routing" (similar to Tor) to hide your IP address and metadata. It does not require a phone number.
• Wickr Me: Known for not logging IP addresses or other metadata and stripping metadata from all transmitted content.

Key Considerations:

• Signal is the most widely adopted for high-security, open-source communication.
• Threema is best if you want to be completely anonymous without sharing a phone number.
• SimpleX and Session are superior if your primary concern is the absolute elimination of metadata (who you talk to and when).

To help narrow down the best choice for you, are you looking for a free app , or is a paid/premium service acceptable?

If your requirement is both end-to-end encryption and avoiding server-side metadata storage, your options are much narrower than the set of apps that simply advertise "encrypted messaging."

Here's how the major privacy-focused apps compare:

For your specific requirement, SimpleX Chat is the closest match. Its design goals include:

• End-to-end encrypted messages and calls.
• No phone number, email, username, or permanent user identifier.
• Relay servers only hold encrypted messages until they're delivered.
• Contacts and chat history stay on your devices.
• Open-source and decentralized.

Session is another strong choice if you're comfortable with a decentralized network. It uses onion routing and is designed to minimize metadata leakage while providing end-to-end encryption.

One important caveat: No internet messaging system can truthfully promise "no metadata" at all. At a minimum, network infrastructure necessarily observes some information (for example, IP traffic unless additional anonymity measures are used). The meaningful distinction is whether the service itself stores identifiable communication metadata or is architected to minimize or avoid collecting it.

If your threat model is especially strict (for example, protecting the relationship between who talks to whom), SimpleX Chat is generally the strongest fit. If you want the broadest adoption and easiest onboarding while still getting excellent privacy, Signal remains a very strong choice despite retaining a small amount of operational metadata.