Privacy Policy

1. Introduction

Protecting your personal data is important to us. This privacy policy explains what data we collect, for what purpose, and how it is used, in accordance with the General Data Protection Regulation (GDPR).

We only collect and process data for the purposes described below.

2. Data Controller

If you have any questions about this privacy policy or the processing of your data, you can contact us at the email address above.

3. Data We Collect and Why

a) Flashcard Ratings

What data is collected

• Ratings provided by users for flashcards

Purpose

• To improve and evaluate flashcard content and learning quality

Legal basis

• Legitimate interest (Art. 6(1)(f) GDPR)

The ratings are used only for evaluating and improving the flashcards and are not used by us for profiling.

b) User Identification

What data is collected

• An anonymous user identifier (RevenueCat ID), or
• An email address, only if the user chooses to sign in

Purpose

• To associate flashcard ratings and usage with a specific user
• To enable account-related functionality if the user signs in

Legal basis

• Performance of a contract or pre-contractual measures (Art. 6(1)(b) GDPR)
• Consent, where applicable (Art. 6(1)(a) GDPR)

Users can use the service anonymously. Providing an email address is optional.

c) Newsletter Subscription

What data is collected

• Email address

Purpose

• To send the newsletter

Legal basis

• Consent (Art. 6(1)(a) GDPR)

The email address is used exclusively for sending the newsletter. Users can unsubscribe at any time via the link provided in each newsletter.

d) Advertising and Google AdMob

The app may display advertisements provided by Google AdMob, a mobile advertising service operated by Google Ireland Limited.

What data may be collected by AdMob

Depending on the user's device settings, consent choices, and region, Google AdMob may collect and process information such as:

• Device identifiers
• IP address
• Approximate location information
• Advertising identifiers
• App interaction data
• Diagnostic and performance information

Purpose

• To display and measure advertisements
• To limit repetitive ads
• To detect fraud and abuse
• To improve advertising services
• To personalize ads, where consent has been given

Legal basis

• Consent (Art. 6(1)(a) GDPR), where required
• Legitimate interest (Art. 6(1)(f) GDPR) for basic advertising functionality and service security

Where legally required, users will be asked for consent before personalized advertising is enabled. Users can manage advertising preferences through their device settings, including limiting ad tracking or resetting advertising identifiers.

For more information about how Google processes data, please refer to Google's Privacy Policy: https://policies.google.com/privacy

4. Third-Party Services

The app uses selected third-party service providers to support functionality, subscriptions, communication, and monetization.

• RevenueCat for subscription and purchase management
• Google AdMob for advertising
• Newsletter service provider, if a newsletter subscription is used

These providers may process data in accordance with their own privacy policies and applicable data protection requirements.

5. No Further Use of Data

The data collected directly by us is not:

• Sold to third parties
• Shared with third parties for independent marketing purposes by us
• Combined with unrelated external data sources by us
• Used for automated decision-making by us

Data is processed only for the purposes explicitly described in this policy. Please note that third-party providers such as Google AdMob may process data according to their own privacy policies.

6. Data Storage and Retention

Data is stored only for as long as necessary to fulfill the stated purposes or until the user:

• Deletes their account, or
• Withdraws consent, for example by unsubscribing from the newsletter or changing advertising consent preferences

Anonymous data that can no longer be linked to an identifiable user may be retained for statistical or analytical purposes.

7. Your Rights

Under GDPR, you have the right to:

• Access your data (Art. 15 GDPR)
• Rectify inaccurate data (Art. 16 GDPR)
• Delete your data (Art. 17 GDPR)
• Restrict processing (Art. 18 GDPR)
• Object to processing based on legitimate interest (Art. 21 GDPR)
• Withdraw consent at any time (Art. 7(3) GDPR)

To exercise your rights, please contact us at hello@doudou-chinese.com.

8. Changes to This Privacy Policy

This privacy policy may be updated if the scope of data processing changes. The current version will always be available within the app or on the website.