Last updated: March 8, 2026

Overview

Sudoku is designed to be private by default. The app does not require account registration, does not use third-party advertising SDKs, and does not track you across other apps or websites.

The app stores only the gameplay-related data needed to provide its core experience, such as preferences, Daily Challenge progress, streaks, and statistics.

Data We Store

Data stored on your device

Sudoku may store the following information locally on your device:

• App preferences, such as selected difficulty, Daily Challenge difficulty, sounds, and board highlight settings
• Daily Challenge state, such as date, difficulty, started or completed status, elapsed time, mistakes, and last update time
• Gameplay statistics, such as played date, difficulty, elapsed time, mistakes, completion status, and aggregate performance data

Data synced through iCloud

When iCloud is available, Sudoku may sync supported app data through Apple CloudKit using your private iCloud database. This is intended to make your preferences, Daily Challenge state, and statistics available on your other devices signed in with the same Apple ID.

If iCloud sync is active, Apple may also use background push delivery to keep your private CloudKit data in sync. Sudoku does not use this for marketing notifications.

Diagnostic logs

Sudoku may generate limited technical logs on the device, including local event logs and CloudKit sync diagnostics, to help detect app or sync issues. These logs are not used for advertising or cross-app tracking.

Data We Do Not Collect for Tracking

Sudoku does not:

• create user profiles for advertising
• sell personal data
• use third-party analytics or advertising SDKs