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Windows App Privacy Policy

Last updated: 28 October 2026

This page explains what the Sudoku69 app for Windows does with data. The app is for Windows 11 and comes from the Microsoft Store. Sudoku69 is run by its author, Mike Brochlowski.

This page covers the app. The website is covered by our main Privacy Policy, which applies to the app only where this page says so. The terms for the app are on the Windows App Terms of Use page.

What does the app collect?

This release of the app does not include sign-in, so we do not collect your name, email address or any other profile data. The app has no analytics and no tracking code, shows no consent banner, and does not use your location, camera, microphone or contacts.

What stays on your device?

The app keeps the following in its own storage area on your PC and does not send it to us:

  • your settings: theme, language, sound and game options
  • your current game and its progress
  • a record of the puzzles you have played and solved, which the app uses to offer puzzles you have not seen yet
  • your coins, up to the guest limit of 1,800
  • the daily puzzles it downloaded last

Uninstalling the app deletes this data. To clear it without uninstalling, open Windows Settings, then Apps, Installed apps, Sudoku69, Advanced options, Reset.

What does the daily puzzle download send?

The puzzles in the app come with it, so it plays offline. When you open the Daily Challenge while your PC is online, the app asks our puzzle database for that day's puzzles, at most once a day (UTC). This is the only time the app contacts our servers.

The request carries no sign-in details, no device identifier, no advertising ID and nothing about your games. As with every internet request, the server sees your IP address, the time of the request and technical details that Windows and the Microsoft Edge WebView2 component add, such as a version string.

We use this only to deliver the puzzles and keep the service running. We do not use it to identify you or build a profile, and we do not sell it. The only other party involved is Supabase, which runs the puzzle database for us and is listed under Third-Party Services in the main Privacy Policy. The connection is encrypted (HTTPS).

If you stay offline, the app keeps working with the puzzles it came with and the last daily set it downloaded. The Daily Challenge then shows an offline message.

Links to sudoku69.com, such as the wiki in the menu, open in your default web browser. From there the website's Privacy Policy applies.

What does Microsoft do?

You install and update the app through the Microsoft Store, under Microsoft's own terms and privacy statement. The app draws its screens with Microsoft Edge WebView2, a component of Windows. Diagnostic data that component sends is governed by your Windows privacy settings and Microsoft's policies, not by this page.

What are my choices?

  • Stay offline. Only the Daily Challenge needs a connection.
  • Delete the local data with Reset or by uninstalling the app, as described above.
  • Ask what we hold about you by emailing privacy@sudoku69.com. For the app, that is limited to the server logs described above.

Changes to this page

If a later version of the app adds sign-in, sync across devices, analytics, purchases or anything else that changes what it collects, we will update this page before that version is released.

Contact

Questions about this page? Email us at privacy@sudoku69.com.

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