Sealed
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info
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About this app
Sealed - privacy focused, post quantum, on-chain messenger
Privacy shouldn't depend on trust.
Sealed is a privacy-first messenger built for people who believe private communication should stay private. Unlike traditional messaging apps, Sealed is designed to minimize not only access to message content, but also the amount of information that exists about your conversations.
Every message is end-to-end encrypted on your device using a hybrid cryptographic architecture combining modern elliptic-curve cryptography with post-quantum encryption, helping protect your conversations both today and against future quantum threats.
Your private keys never leave your device. Not even Sealed can read your messages.
Why Sealed?
Whether you're discussing sensitive business matters, managing digital assets, coordinating your team or simply chatting with friends, your conversations deserve strong protection.
Sealed was built around one principle:
The less information that exists, the less information can be exposed.
End-to-end encrypted messaging
Messages are encrypted before they leave your device and can only be decrypted by the intended recipient.
Post-quantum security
Sealed uses hybrid encryption that combines established cryptography with post-quantum algorithms, providing protection against both current and future attacks.
Privacy beyond encryption
Most messaging apps protect message content while still exposing metadata. Sealed is designed to minimize metadata leakage wherever possible.
No identity link
Create your account using your crypto wallet. No phone number. No email address. No unnecessary personal information.
Self-custody by design
Your encryption keys remain under your control and are stored only on your device.
Open source
Our code is publicly available, allowing anyone to inspect how Sealed works and verify its security model.
Built for Web3
Sealed is designed for blockchain communities, builders, DAOs, investors and anyone who values ownership, transparency and privacy.
Key Features
• End-to-end encrypted messaging
• Hybrid post-quantum encryption
• Self-custodied encryption keys
• Wallet-based authentication
• Open-source codebase
• Privacy-focused architecture
• Minimal metadata exposure
• Modern, intuitive interface
Private communication shouldn't be a luxury or a marketing slogan.
It should be the standard.
Keep it Sealed.
Privacy shouldn't depend on trust.
Sealed is a privacy-first messenger built for people who believe private communication should stay private. Unlike traditional messaging apps, Sealed is designed to minimize not only access to message content, but also the amount of information that exists about your conversations.
Every message is end-to-end encrypted on your device using a hybrid cryptographic architecture combining modern elliptic-curve cryptography with post-quantum encryption, helping protect your conversations both today and against future quantum threats.
Your private keys never leave your device. Not even Sealed can read your messages.
Why Sealed?
Whether you're discussing sensitive business matters, managing digital assets, coordinating your team or simply chatting with friends, your conversations deserve strong protection.
Sealed was built around one principle:
The less information that exists, the less information can be exposed.
End-to-end encrypted messaging
Messages are encrypted before they leave your device and can only be decrypted by the intended recipient.
Post-quantum security
Sealed uses hybrid encryption that combines established cryptography with post-quantum algorithms, providing protection against both current and future attacks.
Privacy beyond encryption
Most messaging apps protect message content while still exposing metadata. Sealed is designed to minimize metadata leakage wherever possible.
No identity link
Create your account using your crypto wallet. No phone number. No email address. No unnecessary personal information.
Self-custody by design
Your encryption keys remain under your control and are stored only on your device.
Open source
Our code is publicly available, allowing anyone to inspect how Sealed works and verify its security model.
Built for Web3
Sealed is designed for blockchain communities, builders, DAOs, investors and anyone who values ownership, transparency and privacy.
Key Features
• End-to-end encrypted messaging
• Hybrid post-quantum encryption
• Self-custodied encryption keys
• Wallet-based authentication
• Open-source codebase
• Privacy-focused architecture
• Minimal metadata exposure
• Modern, intuitive interface
Private communication shouldn't be a luxury or a marketing slogan.
It should be the standard.
Keep it Sealed.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
What’s new
- Biometric UI surfaced.
App support
About the developer
SUNSHIP IGOR KAMROWSKI
igor@sunship.software
Ul. Juliusza Kraziewicza 11a
83-200 Starogard Gdański
Poland
+48 575 231 106