The app
| App name | Killer Sudoku Cygnus |
|---|---|
| Package id | com.cygnusworks.killersudoku |
| Published by | Cygnus Works LLC |
| Privacy policy | games.cygnusworks.com/privacy |
| Support | support@cygnusworks.com |
What this app uses
| Service | Used | What it does here |
|---|---|---|
| Google AdMob | Yes | A full-screen ad after a finished game, not after every one and never after a loss, a banner across the top of the screen, plus rewarded ads you choose to watch. |
| Google Play Billing | Yes | One-off purchases: remove_ads and one skin pack, skin_night. Nothing else,
and no subscriptions. |
| Play Games sign-in, leaderboards and achievements | No | Not connected. The game has five leaderboards and nine achievements built in but no Play Games project, so it never signs in and sends nothing to Play Games. Scores and unlocks wait in the save on the device. |
| Play Games cloud saves | No | This game keeps its save on the device and nowhere else. |
| Analytics, crash reporting, ad networks other than AdMob | No | None are built into the app. |
Status as of 3 October 2026. Killer Sudoku Cygnus is not on Google Play yet. This page is updated when it ships and whenever what it uses changes.
What it stores on your device
One save, in the app's private storage, under the key
killersudoku.save.v1. It will hold the puzzle in progress, best times or
scores, games played, settings, the daily streak, whether the ad removal has been
bought, and any leaderboard score or achievement waiting to go to Google. None of it
is sent to us, and uninstalling the app deletes it. The same list, in the general
form, is in the policy.
The rest of it
Everything else, meaning what Google receives, the consent form for players in the EEA and the UK, purchases, Play Games, children's data, your rights and how to delete things, is in the one policy that covers every game on this site.