Privacy Policy

Effective date: 2026-07-19

What this app does

TaiwanCards helps users study language vocabulary and characters with spaced repetition,dictionary lookups, and practice tools.

Data we collect

Account data provided at sign-up (email, display name, and encrypted password if you use password login).
Study data you create in the app (decks, cards, progress, history, and optional profile settings).
Basic technical logs needed for reliability and abuse prevention.

Google OAuth data

If you sign in with Google, we receive only the information required to authenticate your account:your Google account email and basic profile identity fields provided by Google.

We do not request Google Drive, Gmail, contacts, calendar, or other sensitive Google scopes for login.

How we use data

To authenticate users and keep accounts secure.
To store and sync your learning progress and user-created content.
To operate, maintain, and improve core app functionality.

Data sharing

We do not sell personal data. We share data only with infrastructure providers required to run the service,and only to the extent necessary.

Data retention and deletion

Data is retained while your account is active, or as needed for legal, security, and operational reasons.

You can request account deletion and data removal by contacting the developer.

Signing in with Google, and your data

Signing in with Google is an optional way to create an account. You can register with an ordinary email address and password instead, in which case no Google data is requested at all.

When you sign in with Google, TaiwanCards receives your email address and the name on your profile. These are used to create your account and attach your learning progress to it.
If you separately press 'Back up to Google Drive', the app creates a single file on your Drive holding a backup of your learning progress, and can read and overwrite only that file.
Access is limited to the drive.file scope: the app can only reach files it created itself. TaiwanCards cannot see or open any other file on your Drive. No backup is made automatically — only when you press the button.

Contact

Developer contact: https://github.com/denpatin