Privacy

Updated November 1, 2026

No accounts

You don't sign up. Your purchases, study progress, language choice and settings are saved only on your phone (in your browser's storage). Clearing your browser data removes them.

Payments

Checkout is handled by Stripe. Stripe collects your card details and email to process the payment; we never see your card number. Your purchase link contains a payment code that we check with Stripe to unlock your guides.

Google Ads and TikTok measurement

When you buy after clicking one of our Google ads, our site tells Google Ads that a purchase happened, with its price and a purchase code, and Google uses a cookie to connect it to the ad click. TikTok works the same way for our TikTok ads: its pixel records page visits and purchases (price and purchase code) with a cookie. We use this only to measure and improve our ads. We don't send your name, email or card details to Google or TikTok.

In the EU, UK, Switzerland and Canada (and anywhere we can't tell your location), this only happens if you tap Allow on our cookie banner. Elsewhere it's on by default. You can turn it off any time:

How Google uses this information: business.safety.google/privacy · How TikTok uses it: TikTok Business privacy policy

Microphone and read-aloud

"Say it" uses your phone's built-in speech recognition only when you tap the mic. Depending on your phone, your browser's maker (such as Apple or Google) may process the audio to turn it into text. We don't record or store it. Read-aloud uses your phone's built-in voice.

Review plan