Privacy Policy

Account info: email, display name, and (optionally) gender, location, avatar.

Learning data: progress, EXP, streaks, decks, practice results and activity history.

Basic technical data needed for login and operation (e.g. session cookies).

To provide and personalize your learning experience, sync progress across devices, process payments, support users and improve the product.

For EU/EEA users, we process data based on performance of a contract (providing the Service), your consent, and legitimate interests in operating and improving the Service.

We use trusted providers solely to run the Service: Supabase (storage & database), Vercel (hosting), Google (sign-in), LemonSqueezy (payments), MyMemory (machine translation of content).

We do not sell your personal data.

We use cookies necessary for login (Supabase session) and to remember your language preference. We do not use them for tracking ads.

Data is stored on our providers' infrastructure with access controls (RLS) so each user only accesses their own data. We retain data while your account is active.

You can view and edit your profile, EXPORT all your learning data, and DELETE your account right inside Settings.

EU/EEA users have additional GDPR rights (access, rectification, erasure, objection). Contact us for help.

Because we use global providers, your data may be processed in countries other than where you live, with appropriate safeguards.

The Service is not directed to children below the minimum age set by local law (e.g. 16 in the EU). If you are under that age, use it with parental consent.

This policy may be updated; the 'Last updated' date reflects the current version.

Privacy contact: tobenihongo134@gmail.com.