Frequently asked
Is the free tier actually useful?
Yes. The free tier uses your device's OS CSPRNG (cryptographically secure pseudorandom number generator) when the live quantum pool isn't connected. CSPRNG is still strong — it's what Signal, WireGuard, and your bank use. The Quantum plan adds genuine photon shot noise on top of that.
Where is my data stored?
Your vault is encrypted and stored in your browser's localStorage — on your device only. We never receive your passwords, keys, or master password. The only external call we make is to
HaveIBeenPwned for breach checks, and only the first 5 characters of your password's SHA-1 hash are sent (k-anonymity). See our
privacy policy.
What is the API key for?
With a Quantum or Developer subscription, you get an API key that lets your own applications request quantum entropy programmatically via a simple REST endpoint. Useful for seeding your own crypto systems, generating tokens server-side, or integrating quantum randomness into your products.
Can I cancel anytime?
Yes. Cancel anytime through your Stripe customer portal. No penalties, no questions. Your free tier access remains.
What hardware generates the randomness?
A dedicated laser and camera sensor system. The quantum shot noise (photon arrival statistics) in the camera frames is the entropy source. Raw pixel data is processed through Von Neumann debiasing and SHA-256 conditioning before entering the pool.
Is there an Android app? Do I need the Play Store?
No Play Store required. Download the APK directly below — we don't go through Google and we never will.
Installing directly means no 30% Google cut, no app store surveillance, and no Play Store policy interference.
This is intentional: a quantum privacy tool shouldn't depend on a surveillance corporation for distribution.
To install: tap the APK link on your Android device → enable "Install from unknown sources" when prompted → done.
The web app also installs as a PWA: open in Chrome, tap ⋮ → "Add to Home Screen".