Privacy policy

Effective 8 November 2026.

Napdoku is a logic puzzle game for Android and the browser. This page explains what data the game handles.

Data we collect

We collect no personal data ourselves. The game has no analytics and no accounts, and it never sells data. The only third-party SDK is Google AdMob in the Android app (see “Advertising” below). Your game progress leaves the device only if you turn on progress sync (see below).

What stays on your device

Your progress (levels, stars, best times, daily streak, threads and the room) and settings are stored only on your device. If Android backup is on, the system may back them up to your Google account with your other apps. Android manages that, not the game. In the browser, progress is kept in that browser’s storage.

Progress sync (optional)

Sync is off until you turn it on in “Gifts” → “Sync”. Then the game sends its progress (levels, stars, best times, daily results, threads, room items, lessons and skins) to our server on Cloudflare and keeps it under a random key stored on your devices. No name, email, device ID or location is sent. Turning sync off on a device stops it at once; to have the copy on the server deleted, write to the contact address below.

Advertising (Android app)

The Android app shows ads from Google AdMob: a banner at the bottom, an ad between levels (at most once a minute) and optional videos you choose to watch for bonus threads. To show and measure ads, Google’s SDK may collect the device’s advertising ID, IP address and data about how you use the app. Where the law requires it, for example in the EEA and the UK, ads are personalised only with your consent: a consent form appears, and you can change your choice any time in “Settings” → “Ad privacy”. The browser version and this website show no ads. How Google uses this data: https://policies.google.com/technologies/partner-sites

Internet and permissions

The game works offline and does not ask for access to contacts, camera, microphone, location or files. Vibration is only feedback for moves and can be turned off in the settings. The Share button hands a picture to the system share sheet; where it goes is up to you.

Children

The game is not directed at children under 13 and collects no data about anyone, children included.

This website

The site uses no cookies, no visitor counters and no third-party scripts.

Changes and contact

If this policy changes, the new version will be posted on this page with a new date. Questions: the contact address on the game’s Google Play page.