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Quldra
Your messages, secured against tomorrow's threats.
Quldra is a post-quantum encrypted messaging app. Private keys never leave your device, no phone number, no ads. A privacy-first alternative to WhatsApp, Signal, and Telegram — on iOS, Android, and in the browser.
I built Quldra (www.quldra.com) completely from the ground up with one clear goal: to create a private and secure messaging app that is as ready as possible for the potential arrival of quantum computers. One thing that mattered especially to me was making sure that the usual “harvest now, decrypt later” risk would not apply to the solution I built.
Key points:
- Post-quantum end-to-end encryption (ML-KEM-768 + ChaCha20-Poly1305) – each conversation gets its own random key.
- One device, one account – message history does not travel between devices.
- No phone number, no email, no social media account – only a username is required.
- iOS and Android apps, plus temporary browser chat capability.
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About Quldra on Product Hunt
“Your messages, secured against tomorrow's threats.”
Quldra was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #145 on the daily leaderboard. Quldra is a post-quantum encrypted messaging app. Private keys never leave your device, no phone number, no ads. A privacy-first alternative to WhatsApp, Signal, and Telegram — on iOS, Android, and in the browser.
Quldra was featured in Android (57.1k followers), Messaging (51.9k followers), Privacy (11.1k followers) and Security (2.6k followers) on Product Hunt. Together, these topics include over 62.5k products, making this a competitive space to launch in.
Who hunted Quldra?
Quldra was hunted by Martin Kambla. 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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Martin Kambla