Sudoku Journey

Privacy Policy

Effective: 2026-11-10 · Policy version: 2026-11-ads-hints

Scope

This policy covers Sudoku Journey for Android, package com.sudokujourney.android. No account is required. Offline play does not mean that advertising, purchases or permitted measurement never process data.

Local storage

Saved puzzles, active time, moves and notes, Journey and album progress, statistics, language and other preferences, challenge progress and results, ad cadence, cached purchase entitlement and local event deduplication records are stored on the device. Android backup may include app data according to device settings.

Friend Challenge

Invitations contain the initial 81 cells, difficulty, time and rule/assistance summaries. They exclude the solution, entered moves and notes content. Shared result links contain comparison times, assistance summaries and a challenge reference, not the board. Anyone receiving a link can read its contents. Messaging apps and browsers handle links under their own policies. Times are self-reported friendly comparisons, not authenticated records; no invitation server is used.

Advertising

Google AdMob can process IP address, approximate location, device or advertising identifiers, ad interactions and diagnostics to deliver, measure and protect ads. Processing depends on configuration, region, device and consent. Available Google UMP privacy choices can be reopened in Settings. The optional one-time Remove Ads purchase stops normal banners and interstitial ads at game-close breaks. Rewarded videos for hints are optional, require an explicit player request and remain available after Remove Ads; no hint is granted unless the SDK reports an earned reward.

Analytics

Google Analytics for Firebase can measure app use, game starts and completions, difficulty, duration, existing assistance and challenge actions. The SDK can process app/device identifiers, interactions, approximate country and acquisition information. Custom events exclude names, emails, grids, solutions, notes content and complete challenge/result links or payloads. Collection starts disabled; current code enables it only when all four UMP purposes are granted or not applicable. Unknown, denied or unconfigured consent keeps it off. Withdrawal disables collection and resets local Analytics data; it does not erase previously uploaded data.

Purchases

Google Play processes the optional one-time Remove Ads purchase and payment details. The app receives product, purchase state and token to verify, acknowledge and restore ownership, not full card or bank details. Prices and currency come from Google Play. Official linked Google services can measure ad and purchase revenue when configured and permitted; the app does not manually duplicate purchase or ad-impression events.

Choices, retention and deletion

Settings can clear local gameplay progress; Android settings can clear all app storage. Android backup and Google-controlled records follow their respective settings. Previously shared links and other people's copies are not deleted by clearing this app. Manage available consent in the app and Google/device privacy settings. Retention of records processed by Google is governed by the relevant provider policies and settings. The app has no remote-deletion feature for those records. For privacy questions or requests, use the contact below.

Protection and children

The app does not request names, contacts, photos, microphone, camera or precise location for Sudoku. Google services may process data as described above. No separate Crashlytics, authentication or online puzzle database was added. No storage or transmission method is completely secure. Advertising treatment for children depends on the applicable audience and consent configuration in Play and AdMob.

Contact and this page

Privacy questions: kontakt@dimitrioskorakis.com. Do not send payment card details. This static page has no tracking, advertising tags, remote fonts or cookies; the hosting provider may process ordinary request information. Policy version: 2026-11-ads-hints. Effective: 2026-11-10.