You should
own your keys.
Guardikey is built by Apexium Technology on a single belief: the key to your digital life belongs to you alone — not to a company, a cloud, or anyone who could be compelled to hand it over.
Most apps that hold your secrets can also read them. They encrypt your data with a key they keep, so a breach, a subpoena, or a change of ownership can expose everything.
We build the opposite. In Guardikey, your data is encrypted on your own device with a key derived from a password we never see. We store only ciphertext we cannot open. There is no master key, no recovery backdoor, and no way for us — or anyone who seizes our servers — to read what is yours.
That constraint shapes every decision: local-first so it works without us, zero-knowledge so it is private by construction, and post-quantum so it stays that way.
Own your keys
Self-custody is the whole point. Your master password, your seed phrase and your messages never leave your devices in readable form.
No backdoors, ever
Security comes from the key, not from secrecy. We use standard, publicly analysed algorithms and build no way in that an attacker could use too.
Honest by default
We name the exact cryptography we use and say plainly what we can and cannot do — including that we cannot recover a forgotten master password.
Built to last
Post-quantum from day one, so data encrypted today stays protected against the computers of tomorrow.
The company
Guardikey is a product of Apexium Technology. We are an independent software company focused entirely on privacy-first security tools. Payments are processed by Paddle as our Merchant of Record, and our legal terms, privacy practice and refund policy are published in full.
Questions, security reports or press: [email protected].