Your game stays on your phone
The short version
- No account, no sign-in. We never ask who you are.
- We collect nothing. Your boards, times and settings are saved on your phone and never sent to us.
- Ads are the one exception. Google AdMob shows the ads and processes data for them, under Google's own policy.
- You stay in control. Clear your history in the app, change your ad choices in Settings, or uninstall to erase everything.
Who we are
Sudoku Mini is made by fungrid, an independent app developer. In this policy, "we" and "us" mean fungrid, and "the app" means Sudoku Mini for Android. We are the data controller for the limited processing described here.
Questions about privacy: fungridapp@gmail.com.
What the app stores on your phone
All of this is kept in the app's private storage on your device. It never leaves your phone, and nobody — including us — can read it from anywhere else.
| What | Why | How to remove it |
|---|---|---|
| Game in progress the board, your entries, pencil marks, timer, mistakes |
So Continue picks up exactly where you left off. | Finish it, or uninstall the app. |
| Board history boards you've played, their state, times played and best time |
The Stats page, so you can revisit or replay a board. | Delete one board, or tap Clear history on the Stats page. |
| Statistics solved counts, best and average times, daily streak |
To show your progress per board size and difficulty. | Uninstall the app. |
| Settings sound, music and haptics choices, volumes, chosen track |
So the app sounds the way you set it. | Uninstall the app. |
| Ad consent choice stored by Google's consent library |
To remember your answer and not ask again. | Change it under Settings → Ad privacy choices. |
If Android Backup is switched on for your phone, Android may include the app's saved settings and progress in your own Google account backup. That backup belongs to you and is governed by Google's privacy policy; we cannot read it.
What we collect
Nothing. The app has no servers, no accounts and no analytics. We do not collect your name, email address, phone number, contacts, photos, location or device identifiers, and we do not build a profile of you. We receive no reports about how you play.
Two things sit outside that, and both are handled by Google rather than by us:
- Ads, described below.
- Google Play may give us anonymous, aggregated statistics about installs, uninstalls, ratings and crashes for the app as a whole, if your Android settings allow it. These are counts and technical reports, not information about you, and we cannot identify anyone from them.
Ads
The app is free and shows ads through Google AdMob: a banner at the bottom of the menu and the board, a full-screen ad after a lost game, and optional rewarded video ads you choose to watch for an extra hint or a second chance. Ads are never shown over a finished puzzle's celebration or during play.
To serve those ads, Google may process data such as your advertising ID, IP address (which gives approximate, city-level location), device model and operating system version, the app you are using, and your interactions with the ad. Google acts as an independent controller for this. What Google does with it is set out in Google's Privacy Policy and in how Google uses data from sites and apps that use its services.
Your consent
Where the law requires it — in the European Economic Area, the United Kingdom and Switzerland — the app shows Google's consent form the first time you open it, and asks whether ads may be personalised. Your answer is remembered, and you can change it at any time under Settings → Ad privacy choices inside the app. If you decline, ads still appear, but they are not personalised.
Opting out on your device
- Android: Settings → Privacy → Ads, where you can delete or reset your advertising ID and turn off ad personalisation for every app.
- Google account holders: My Ad Center.
Sharing a board with a friend
When you share a board, the app creates a link such as
https://fungridapp.github.io/sudoku/?b=…. The part after ?b= is the puzzle
itself — its size, difficulty, starting clues and, if you have solved it, your time — packed into
a short code.
- The link holds no personal information: no name, no account, nothing identifying you.
- Nothing is uploaded when you share. Your phone builds the link, and the messaging app you pick sends it, under that app's own privacy policy.
- Whoever opens the link gets the same board. They cannot see anything else about you or your games.
This website
These pages are static and hosted on GitHub Pages. There are no cookies, no analytics and no trackers.
- GitHub serves the pages and, like any web host, may log technical details such as your IP address and browser for security and abuse prevention. See the GitHub Privacy Statement.
- The pages load fonts from Google Fonts, so your browser contacts Google's servers and Google receives your IP address in doing so.
- A shared board's code is read by your own browser to draw the board. It is never sent anywhere.
Permissions the app requests
| Permission | What it's for |
|---|---|
| Internet, network state | Loading ads. The puzzles themselves are generated on your phone and work fully offline. |
| Vibrate | The small taps you feel when placing a digit. Turn it off with Settings → Haptics. |
| Advertising ID and related ad services | Added by Google's ads library so ads can be shown and measured. |
The app asks for no runtime permissions at all: no camera, microphone, location, contacts, photos or files.
Children
Sudoku Mini is a puzzle game suitable for all ages, but it is not directed at children under 13, and we do not knowingly collect any personal information from children. Because the app shows ads, a parent or guardian should decide whether it is appropriate for their child. If you believe a child has provided personal information through the app, write to us and we will help; in practice the app holds nothing that identifies anyone.
Your choices and rights
- Delete your data. Clear individual boards or all history on the Stats page. Uninstalling the app removes everything it has stored, permanently.
- Change your ad choices at any time under Settings → Ad privacy choices.
- Play without ads loading by switching off your connection; the game works offline.
- Access, correction, deletion, portability and objection. Under laws such as the GDPR and the CCPA/CPRA you have rights over personal data held about you. We hold none, so there is nothing for us to hand over or delete. For data processed by Google for ads, use the Google links above or contact Google directly.
- We do not sell or share your personal information, and never have.
Data is kept only on your device, for as long as you keep the app installed. We run no servers and hold no backups of your data.
Changes and contact
If this policy changes, the updated version appears on this page with a new date at the top. Significant changes will also be noted in the app's store listing.
Questions, requests or concerns: fungridapp@gmail.com. We aim to reply within a few days.