Kuadra

Privacy Policy

Last updated: 4 June 2026

This Privacy Policy explains what information the Kuadra puzzle game (“Kuadra”, “the app”, “we”, “us”) collects, how we use it, and the choices you have. Kuadra is published by MJK APPS SRL. If you have any questions, contact us at contact@fluttech.com.

1. Information we process

On your device only

Your puzzle progress, best times, streaks and app settings are stored locally on your device. This information stays on your device and is not sent to us unless you sign in and use cloud sync (below).

Account & cloud sync

Kuadra uses Firebase Authentication. By default an anonymous account (a random identifier with no personal details) is created so your progress can be saved to the cloud and you can appear on leaderboards. If you choose to sign in with Google or Apple, we receive your name and email address from that provider. With Apple you may choose “Hide My Email”, in which case we only ever receive a private relay address.

When you are signed in, the following is stored in Cloud Firestore and linked to your account:

• puzzle progress and best times;
• daily-challenge results;
• streak / activity history;
• a display name you choose;
• leaderboard entries.

Your display name and your scores (solve time and number of puzzles solved) are visible to other players on the public leaderboards.

Crash diagnostics

We use Firebase Crashlytics to record crashes so we can fix bugs. A crash report may include your device model, operating-system version, app version and a technical stack trace. It is used only to diagnose and fix problems, not to identify or track you.

Advertising

Kuadra shows a single banner ad at the bottom of the screen while you are playing a puzzle. Ads are supplied by Google AdMob (provided by Google LLC / Google Ireland Ltd). To deliver, frequency-cap and measure ads, AdMob may process information about you and your device, including the device’s advertising identifier, IP address, approximate (coarse) location derived from that IP address, device and operating-system details, and basic information about how you interact with the ads. Some of this processing is considered “tracking” under Apple’s App Tracking Transparency framework.

Your choice (consent). Where required by law — including the EU/EEA, the UK and Switzerland — we show a Google-provided consent form before any personalised ads are served. You can allow personalised ads, or choose to receive only non-personalised ads. On iOS you may also see Apple’s separate App Tracking Transparency prompt. If you decline tracking or personalisation, you will still see ads, but they will not be personalised based on a profile of you.

You can review or change your choice at any time from Settings → Privacy inside the app, where available. For full details of how Google uses this data, see the Google Ads technologies and Google Privacy Policy.

Feedback

If you send feedback from within the app, we store the message you write together with your app version and your account identifier so we can understand and follow up on the issue.

2. How we use your information

• To run the game and save your progress.
• To sync your progress across your devices when you sign in.
• To show daily-challenge and leaderboard standings.
• To show banner ads (and, where you consent, personalised ads) so the app can be offered for free.
• To diagnose crashes and improve stability.
• To respond to feedback you send us.

3. Service providers

We rely on the following providers to run these features:

• Google Firebase — Authentication, Cloud Firestore and Crashlytics (provided by Google LLC / Google Ireland Ltd). See Firebase privacy and the Google Privacy Policy.
• Sign in with Apple and Google Sign-In — used only if you choose to sign in. See the Apple and Google privacy policies.
• Google AdMob — used to serve the in-app banner ad, including consent management through Google’s User Messaging Platform. See AdMob privacy & security.
• Google Fonts — the app loads its typefaces from Google’s font servers (fonts.gstatic.com); this involves a request to Google that may include your IP address and device information, per Google’s policies.

We do not use product analytics or attribution services. Beyond AdMob’s role in serving ads (described above), we do not share your data with third parties for their own purposes.

4. Sharing and selling

We do not sell your personal data. We share the limited information described in the “Advertising” section with Google AdMob so it can serve and measure the in-app banner ad; that sharing is governed by your consent choices. Aside from that, the only information visible to other people is the display name and scores you publish to the leaderboards.

5. Keeping and deleting your data

• Local data is removed when you uninstall the app.
• You can permanently delete your account and all associated cloud data at any time from Settings → Account → Delete account. This removes your progress, stats and identity records (your profile and all-time leaderboard entry). Some leaderboard entries from earlier daily or weekly periods may persist briefly and then age out automatically.
• You can also request deletion by emailing contact@fluttech.com.

6. Your rights (EU/EEA — GDPR)

You have the right to access, correct, export and erase your personal data, to restrict or object to processing, and to lodge a complaint with your local data-protection authority. The quickest way to erase your data is the in-app Delete account option; otherwise contact us.

Our legal bases for processing are: providing the features you request (account, sync, leaderboards) under contract; our legitimate interest in diagnosing crashes and showing non-personalised ads to keep the app free; and your consent for personalised ads and tracking, which you can grant or withdraw via the in-app consent form.

7. Children

Kuadra is a general-audience puzzle game and is not directed at children below the age of consent in their country. We do not knowingly collect personal data from children. If you believe a child has provided us with personal data, contact us and we will delete it.

8. Security

Data is transmitted over encrypted connections (HTTPS/TLS). Cloud data is protected by Firebase security rules so that each account can only write its own records.

9. Changes to this policy

We may update this policy from time to time. We will update the date at the top and, for significant changes, note it in the app.

10. Contact

MJK APPS SRL
contact@fluttech.com