Privacy

Last updated September 2026

Short version: we hold your email address, what you have studied, and a record of what you paid. Your own code books never leave your device, and analytics stops at the login.

What we collect

  • Your account — name, email address, and a hashed password. We never store the password itself.
  • Your study record — which cards you have answered and whether you got them right, your practice exam attempts, your formula drill results, and your study-plan ticks. This is the product; it exists so the app can schedule what to show you next.
  • Your exam date, if you choose to give one. It is optional and only drives the countdown.
  • Purchases — the amount, the date, and a Stripe reference. We never see or store your card number. Stripe handles the payment page and we only receive confirmation that it succeeded.

Your own code books stay on your device

The app lets you add a PDF you already own — your NEC, your 70E, the Cal/OSHA guide — so you can search it. That file is read and indexed in your browser and stored in your browser's own database. It is never uploaded. There is no server route that could receive one, no database column that could record one, and an automated test fails the build if anyone adds either. Which book you have is not information we hold.

Analytics, and where it stops

We use Google Analytics on the public pages — this one, the guides, the practice test, and the login and sign-up pages — to see which pages bring people here. That uses cookies and sends Google your IP address and the pages you viewed.

It is not loaded once you are signed in. No analytics script runs on the dashboard, the study pages, the practice exam, the drill or the reference shelf. What you study, how often, and how well is never sent to Google or anyone else. We have turned off Google's advertising and cross-site personalisation signals, so this is measurement rather than ad targeting.

You can block it with any content blocker and the app will work exactly the same.

What we do not do

  • We do not sell or share your personal information, and we never have.
  • We do not send marketing email. The only email you will get is about your account.
  • We do not run advertising, and there are no third-party ad or social pixels on this site.

Your rights

California residents have rights under the CCPA/CPRA, including to know what we hold, to have it deleted, and not to be discriminated against for asking. You can delete your account and everything attached to it from your profile page at any time, or email us and we will do it. Because we do not sell or share personal information, there is nothing to opt out of.

We keep your study record for as long as your account exists. Purchase records are kept longer, because they are financial records.

Contact

Questions about any of this, or a request about your data: [email protected].