Chogan is a collection of small, finishable games in a single app. It ships with four games, and new ones arrive as updates to the same app.

The games:

* Tower Defence — four towers, three fixed maps plus a daily map, twenty waves and an endless mode
* Sudoku — four difficulties with a guaranteed unique solution, notes, hints and a daily challenge
* Minesweeper — no-guess generation, four sizes, chording and flags
* Dots and Boxes — two players on one phone, or three levels of AI

Around the games:

* A daily challenge that is identical on every device, with no server at all
* A weekly offline league with five tiers
* Over thirty awards
* Stats and a profile
* Persian and English interface with light and dark themes

On privacy:

* The only permission the app declares is vibration. Not even internet access
* No ads, no in-app purchases, no analytics, no tracking
* Every asset ships inside the package. Even the sound is generated with WebAudio, so there is not a single audio file in the build
* Progress is stored on the device only, and Google auto-backup is turned off

Free and open source under the MIT licence.