Privacy Policy

Kakuro: Cross Sums Puzzle — Last updated: June 13, 2026

1. Overview

Kakuro: Cross Sums Puzzle ("the App") is a free Android number-logic puzzle game developed by 강건한건강 ("we", "us"). This Privacy Policy explains how we handle information when you use the App.

2. Information We Collect

The App does not collect, store, or transmit any personal information to our servers. It is a 100% offline puzzle game with no user accounts and no server-side communication.

Your progress, statistics, best times, daily streak, and settings are stored only on your device using local storage. Uninstalling the App removes all of this data.

3. How Puzzles Are Generated

Every puzzle is generated on your device and is guaranteed to have a single solution reachable by logic alone. No internet connection is required to play, and the daily puzzle is produced from the calendar date alone — nothing about you is sent anywhere to create or check a puzzle.

4. Third-Party Services

The App uses the following third-party service:

• Google AdMob — for displaying advertisements. The App shows a banner at the bottom of the screen, a full-screen ad after a puzzle is completed, an optional rewarded video for revealing a cell, and an app-open ad on launch. There are no ads while you are solving a puzzle. AdMob may collect device identifiers (such as Advertising ID) and usage data to serve personalized or non-personalized ads. For more information, see the Google Privacy Policy.

5. Permissions

The App requests only internet access, which is used to load ads. The App does not use or request access to your location, microphone, contacts, camera, or files.

6. Data Storage

All progress and settings are stored locally on the device. There is no cloud sync, no backup, and no account system. Uninstalling the App removes all locally stored data and cached AdMob data.

7. Children's Privacy

The App is suitable for general audiences and is not directed at children under the age of 13. We do not knowingly collect personal information from children.

8. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated revision date.

9. Contact Us

If you have any questions about this Privacy Policy, please contact us at: [email protected]