Solodoku Sudoku — Privacy Policy

Last updated: 16 October 2026

Solodoku Sudoku (package com.vasaserafin.solodoku) is an offline Sudoku game by Vasa Serafin. This policy explains the only data that leaves your device. The app has no accounts and no sign-in; your puzzles and scores stay on your device.

What the app sends or receives

• Advertising (Google AdMob). The free game shows a banner ad on the menu screen and, at natural breaks only (never mid-puzzle), an occasional full-page ad. AdMob may use your advertising ID and app-interaction data to select and measure ads, only after you answer the consent dialog shown on first launch. You can revisit or change that choice any time via "Privacy options" in the app's Settings.
• Analytics (Google Firebase Analytics). Anonymous usage events (screens viewed, features used) help improve the game, subject to the same consent. Google Mobile Ads may also collect approximate location (from the IP address), device identifiers and app performance data for ads, analytics and fraud prevention.
• Integrity check (Google Play Integrity). The app may ask Google Play to confirm that it was installed from Google Play, to prevent fraud. No personal data is sent by the app for this.
• Purchases (Google Play Billing). Two optional products remove ads: a one-time purchase (com.vasaserafin.solodoku.noadspermanent) and a monthly subscription (com.vasaserafin.solodoku.noads), which you can cancel at any time in Google Play. Both are processed entirely by Google Play. The app only reads the purchase state to remember that ads are removed (it asks Google Play whether either one is active). No card or financial data reaches the app.

What the app never does

• No location, contacts, photos, microphone or camera access.
• No user accounts, no profiles, no direct marketing.
• No selling of data to third parties.

Your choices and data deletion

• Ads personalization/consent: Settings → "Privacy options" (shown when required), or your Android advertising ID settings.
• On-device data: all puzzles, scores and settings live in the app's private storage; Android's Settings → Apps → Solodoku Sudoku → Clear data deletes everything permanently.
• Other requests: contact the support address on the Play Store listing and your request will be actioned.

Children

The game is not directed at children and does not knowingly collect data from them.

Changes

Updates to this policy will be posted at this URL with a new "last updated" date.