Privacy, plainly
The honest version, because there is very little to tell.
The short version
The courses themselves collect nothing. They are static files that run in your browser, with no analytics, no tracking, and no network calls home.
What the course files store
Your narrator voice and playback speed are saved in your own browser's local storage so the player remembers them between lessons. That never leaves your device.
API keys
Where a course offers an optional paste-your-own-key demo, the key is held in memory for that page session only. It is never stored, never logged, and never transmitted anywhere except directly to the provider you chose.
This website
If you use the contact form, we receive what you type in order to reply to you. Checkout is handled by a third-party payment provider under their own privacy policy; we never see your card details.
The one third party
This site loads its typeface (Inter) from Google Fonts, which means your browser makes one request to Google when a page loads. That is the only third-party request on the site — there is no analytics, no tag manager, no pixel and no advertising network. We are naming it because a privacy page that omits the one thing it does would be worse than useless.