Privacy Policy — Letter by Letter

Privacy protection for child users.

Last updated:
November 11, 2025

1. Data Controller Identity

This application (“Letter by Letter - Spelling”) is developed by C&C CarrionCastillo, based in Spain.

You can contact us at: carrioncastilloapps@gmail.com.

2. Purpose of Data Processing

The app is intended for children and does not collect personally identifiable information.

Its sole purpose is to display non-personalized ads via Chartboost.

Ads are based only on:

  • Contextual information (e.g., device type or language).

No advertising identifiers or personal data are used.

3. Advertising Service Provider

Chartboost, Inc.
Address: 85 2nd Street, Suite 100, San Francisco, CA 94105, United States.
Website: https://www.chartboost.com

Official policy: answers.chartboost.com

Chartboost may collect non-personally identifiable technical information such as:

  • Device model, OS version, language, and resolution.
  • General information about ad interactions.

This data cannot identify the user and is used only for performance measurement and fraud prevention.

5. User Rights

Users (or their guardians) may exercise their rights of access, rectification, erasure, and objection.

To do so, contact Chartboost: chartboost.com/privacy-policy or us: carrioncastilloapps@gmail.com.

6. Children's Data

This app complies with COPPA and the Google Play Families Policy.

  • It is designed for children.
  • It does not request or store personal information.
  • It does not display targeted advertising.
  • It does not allow purchases or location collection.

7. Changes to This Policy

We reserve the right to update this policy according to legal or technical changes. The latest version will always be published here.

8. Contact

If you have any questions, please write to us at:
📧 carrioncastilloapps@gmail.com

🛡️ Child Protection
C&C CarrionCastillo — 2025