Classic Sudoku: Privacy Policy

Last updated: 3 November 2026 · Publisher: Oyen Studios

Classic Sudoku is a puzzle game that works offline. There are no accounts and no sign-in. This page explains exactly what the app does and does not do with information.

What stays on your phone

Your games in progress, statistics, settings and daily-puzzle history are stored only on your device. We do not receive them and cannot see them. Uninstalling the app deletes them.

What we do not collect

• No name, email address, phone number or account details.
• No precise or approximate location.
• No contacts, photos, files, microphone or camera access.

Services the app uses

• Google AdMob shows ads in the free version. AdMob may use your device's advertising ID and collect device and usage information to show and measure ads. Where required (for example in the EEA and UK), the app asks for your consent first and lets you change it later in Settings. Learn more: policies.google.com/technologies/ads.
• Firebase Analytics and Crashlytics (Google) receive anonymous events such as the difficulty you played, whether you finished, and crash reports, so we can fix bugs and improve the game. They contain no personal details you enter. Learn more: firebase.google.com/support/privacy.
• Google Play Billing and RevenueCat process the optional one-time "Remove ads" purchase. Google handles your payment. RevenueCat receives an anonymous app user ID and your purchase status so the purchase can be restored. We never see your payment details. Learn more: revenuecat.com/privacy.

Removing ads

The one-time "Remove ads" purchase turns off ads in the app. Restoring purchases on a new phone is done from the Remove ads screen.

Children

Classic Sudoku is a general-audience puzzle game. We do not knowingly collect personal information from children.

Your choices

• Change or withdraw advertising consent in the app's Settings (where consent is required).
• Reset your advertising ID in your Android settings (Settings → Privacy → Ads).
• Delete all on-device data by clearing the app's storage or uninstalling it.

Changes

If this policy changes, the new version will be published on this page with an updated date.

Contact

Questions about privacy: canbeerliquor@gmail.com