# Cheondoku - Easy Sudoku > New to sudoku? 1,000 calm puzzles that deepen slowly, without pressure. Canonical page: [https://chrome-stats.com/d/app.tystudio.cheondoku](https://chrome-stats.com/d/app.tystudio.cheondoku) ## Overview - **ID:** `app.tystudio.cheondoku` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** TYstudio - **Category:** GAME\_PUZZLE - **Version:** 1.0.5 - **Last updated:** 2026-08-24 - **First published:** 2026-08-13 - **Publisher country:** KR - **Size:** 33 MB - **Data as of:** 2026-09-06 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=app.tystudio.cheondoku) - **Website:** [https://kingdoku.com/cheondoku](https://kingdoku.com/cheondoku) - **Privacy policy:** [https://kingdoku.com/privacy](https://kingdoku.com/privacy) ## Description New to number puzzles? That is perfectly fine.
Cheondoku is sudoku that deepens slowly, without pressure.

◆ Zen — 1,000 Puzzles, Free
A thousand 9x9 sudoku puzzles, open from the start. Quiet in character, and well suited to the hour before sleep or a moment of meditation.

◆ 6x6 Warm-Up — Free
Start small and easy. Ideal for anyone picking up sudoku for the first time.

◆ Sun and Moon — Opened by a Single Purchase
Not separate apps: two more paths that open inside this one.
· Sun — Vitality. The first puzzle of the morning, at a cafe. 1,000 new puzzles.
· Moon — Quiet. A calm night when rest won't come. 1,000 new puzzles.
Three palettes, three depths. A journey that grows with you.

◆ Difficulty for Everyone
From beginner to easy. Hints are there when you need them, and mistakes are part of the process.

◆ Quiet Design
No flashy effects — just an interface that lets your thoughts settle.
Ten minutes a day to clear your mind.

◆ Our Ad Policy, Stated Plainly
· Your first 3 puzzles have no ads at all.
· From the 4th puzzle on, one interstitial ad appears every 2 puzzles, with a minimum 90-second gap.
· There are no banner ads.
· One purchase opens all 3,000 puzzles and the ads disappear entirely.

[How It Works]
· Free to download — Zen 9x9 and 6x6 are free to play, with ads.
· There is a single in-app purchase. A one-time payment, not a subscription.
· Puzzles are bundled in the app, so you can solve offline (ads require a connection).
· Install and start playing right away — nothing to register.

Contact: support@kingdoku.com
Privacy Policy: https://kingdoku.com/en/privacy ## Rankings - #3,193,188 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.WAKE_LOCK` - `app.tystudio.cheondoku.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` ## Similar extensions and apps - [Dusk Sudoku](https://chrome-stats.com/d/com.dotlinerlab.sudoku) — 8 users - [Baekdoku - Infinite Sudoku](https://chrome-stats.com/d/app.tystudio.baekdoku) - [Sudoku Doku](https://chrome-stats.com/d/com.apperfun.sudoku) — 13,745 users, 3.26 / 5 - [Sudoku Zen](https://chrome-stats.com/d/com.inhigame.sodoku.zen) — 221 users - [Sudoku: A Moment to Unwind](https://chrome-stats.com/d/com.sangsangplus.sudoku) — 2 users - [Sudoku](https://chrome-stats.com/d/jp.hatch.numberplace) — 1,415 users - [sudoku zen](https://chrome-stats.com/d/com.jabalatapp.sudokuzen) — 15 users - [Ennea Sudoku](https://chrome-stats.com/d/com.enneasudoku.app) — 4 users - [Sudoku](https://chrome-stats.com/d/com.aeternaapps.sudoku) — 16 users - [Mindoku – Sudoku Puzzle](https://chrome-stats.com/d/com.sefadzi.sudoku_game) — 50 users - [MySudoku](https://chrome-stats.com/d/com.maxtt.mysudoku) — 4 users - [Soothing Sudoku](https://chrome-stats.com/d/com.nadia.sudoku) — 14 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/app.tystudio.cheondoku)