This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
IronSeal
Encrypted messages that self-destruct if forced open
Zero-knowledge encrypted messaging. Messages stay encrypted until you unlock them with biometrics — and if someone fails authentication, they self-destruct and both people are alerted in real time. The server only ever stores ciphertext. Even we can't read your messages. Free.
Hey Product Hunt 👋 I'm Gabe, the solo dev behind IronSeal.
I built this because of one thing that always bugged me: almost every "encrypted" messaging app shows
you everything in plaintext the second you open it. If someone grabs your unlocked phone, your whole
history is right there — and in a lot of apps, the company running the servers can technically read your
messages too.
IronSeal works differently:
🔐 Zero-knowledge. All encryption happens on your device. The server only ever stores ciphertext,I
literally can't read your messages, even if I wanted to or was compelled to. There's no master key and no
backdoor.
👁 Biometric-gated decryption. Messages stay encrypted at rest. They only decrypt after you pass
Face ID / a passkey — so an unlocked, stolen phone still doesn't spill your conversations.
💥 Tamper response. If someone keeps failing authentication, the messages can self-destruct
(configurable: e.g. 3 strikes → purge) and both people get alerted in real time that an unauthorized
attempt happened.
📝 Text-only on purpose. No file sharing. Almost every major messaging-app exploit of the last few
years came through file handling (image/PDF/video parsers). I removed the entire attack surface.
Under the hood: ECDH P-256 + AES-256-GCM, a fresh ephemeral key per message for forward secrecy,
256-byte message padding, passkeys (WebAuthn), and a hash-chained audit log. Django + Next.js, all
crypto via the Web Crypto API.
Honest about the limits, too: I can see metadata (who messaged whom, and when), just never content.
It's not a full Double Ratchet yet, and there's no independent audit yet — I'd rather say that plainly than
overclaim.
It's free at https://ironseal.app. I'll be here all day — genuinely want your hardest questions, especially
on the crypto and the threat model. 🙏
the biometric unlock feels solid and the auto self-destruct after failed auth is a really thoughtful touch for actual privacy
About IronSeal on Product Hunt
“Encrypted messages that self-destruct if forced open”
IronSeal was submitted on Product Hunt and earned 0 upvotes and 2 comments, placing #136 on the daily leaderboard. Zero-knowledge encrypted messaging. Messages stay encrypted until you unlock them with biometrics — and if someone fails authentication, they self-destruct and both people are alerted in real time. The server only ever stores ciphertext. Even we can't read your messages. Free.
IronSeal was featured in Messaging (51.9k followers), Privacy (11.2k followers) and Security (2.7k followers) on Product Hunt. Together, these topics include over 26k products, making this a competitive space to launch in.
Who hunted IronSeal?
IronSeal was hunted by Gabriel Akwasi Asare. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Gabriel Akwasi Asare