Privacy Policy

In one line: we collect only what it takes to keep you learning. No ads, no selling data.

Last updated：September 2026

1. What we collect

Email address: Only if you choose to sign in. Used for sign-in and necessary notices. Skip sign-in and we have none.
Anonymous session ID: Created the first time you open the app, so your progress stays together.
Learning progress: Words you learned, review history, memory stability, daily goal.
Usage events: Plays, "I learned it", sign-in prompts and conversions. Used to debug and to see which clips work.
Interface language: Your zh/en choice, kept in a dl-lang cookie in your browser, used only to render pages.

So reviews come back at the right time. Without progress there is no spaced repetition.
So clips match your level and interests, and the same theme does not repeat back to back.
To debug and improve content (which clips fail to play, which words keep slipping).

We do not sell data to anyone and we do not run ads. These three processors are needed to run the service:

Supabase: Database and authentication. Servers in Singapore (ap-southeast-1).
Bunny CDN: Delivery of clips and posters. It sees requests for media files, not your learning data.
Vercel: Hosting for this site and the web app.

As long as the account exists. Delete the account and the data goes with it.

Dormant anonymous sessions are cleared after a retention period (exact period still to be decided; see the draft note at the top of this page).

You can use the service without signing in. No email given, no email held.
Settings → Delete account removes all learning data at once. This cannot be undone.
Clearing browser data clears the language cookie and the web anonymous session.

The service is not directed to children under 13. We do not knowingly collect their information, and delete it if we find it.

Data is stored in Singapore. Media files are delivered from CDN edge nodes worldwide. Using the service means you understand this.

When this policy changes we update the date at the top of this page. Privacy questions or requests: hello@dramalingo.ai.