# Gridoku: Shikaku Logic Puzzle > Fill the grid with rectangles sized by the numbers. Daily puzzle, world ranking Canonical page: [https://chrome-stats.com/d/com.opentrop.gridoku](https://chrome-stats.com/d/com.opentrop.gridoku) ## Overview - **ID:** `com.opentrop.gridoku` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** opentrop labs - **Category:** GAME\_PUZZLE - **Downloads:** 1 - **Version:** 1.0.1 - **Last updated:** 2026-08-01 - **First published:** 2026-07-23 - **Publisher country:** KR - **Size:** 93 MB - **Data as of:** 2026-09-09 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.opentrop.gridoku) - **Website:** [https://www.opentrop.com](https://www.opentrop.com/) - **Privacy policy:** [https://www.opentrop.com/privacy](https://www.opentrop.com/privacy) ## Description Gridoku is a Shikaku puzzle: draw rectangles sized by the numbers and divide the whole grid with no gaps.
A classic Japanese logic puzzle, a fresh board every day, and a worldwide leaderboard.

■ Three rules
· Drag to draw a rectangle.
· Each rectangle holds exactly one number, and its area (cell count) must equal that number.
· Fill every cell and the board clears itself.

Ten seconds to learn, hours to put down. No math beyond counting cells — just numbers, rectangles, and logic.

■ Daily puzzle · Global ranking
· Every midnight the whole world gets the same board. One round a day keeps your streak alive.
· Clear it and see your rank on the spot: today's top 100, all-time fastest solves, your top-% and whoever just passed you.
· Pick a nickname and you're in — no account, no sign-in.
· Stamp the daily calendar, chase a perfect month, and earn bonus hints at streak milestones (3, 7, 14, 30 days and beyond).

■ Campaign · Endless
· Campaign: 5 chapters, 50 stages. Start at 5×5 and grow to 12×12.
· Endless: boards keep growing as you level up — up to 12×12, 144 cells.
· Hall of Fame: best clear time for every level and your longest streak.

■ Calm by design
· One drag draws, one tap erases. Portrait, one-handed.
· Warm paper-and-ink minimalism — each piece tints as the board comes together.
· Gentle haptics and soft background music, both switchable in Settings.
· Stuck? Spend hints earned from daily clears, or top up with a short ad.
· Puzzles work offline (only ranking needs a connection) and progress saves automatically.
· English and Korean.

■ Made for
· Fans of Sudoku, Nonograms (picture cross), Killer Sudoku and other number logic puzzles
· Five quiet minutes on the commute, at lunch, or before sleep
· Anyone building a daily brain-training habit
· Players who want to race the world on the very same puzzle

Shikaku, Rectangles, Number Area — many names, one satisfying idea. Today's puzzle is waiting.

Contact: siulabs.dev@gmail.com ## Rankings - #3,084,451 — 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.MODIFY_AUDIO_SETTINGS` - `android.permission.POST_NOTIFICATIONS` - `android.permission.READ_APP_BADGE` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.SYSTEM_ALERT_WINDOW` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `com.anddoes.launcher.permission.UPDATE_COUNT` - `com.android.vending.BILLING` - `com.google.android.c2dm.permission.RECEIVE` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` - `com.htc.launcher.permission.READ_SETTINGS` - `com.htc.launcher.permission.UPDATE_SHORTCUT` - `com.huawei.android.launcher.permission.CHANGE_BADGE` - `com.huawei.android.launcher.permission.READ_SETTINGS` - `com.huawei.android.launcher.permission.WRITE_SETTINGS` - `com.majeur.launcher.permission.UPDATE_BADGE` - `com.opentrop.gridoku.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.oppo.launcher.permission.READ_SETTINGS` - `com.oppo.launcher.permission.WRITE_SETTINGS` - `com.sec.android.provider.badge.permission.READ` - `com.sec.android.provider.badge.permission.WRITE` - `com.sonyericsson.home.permission.BROADCAST_BADGE` - `com.sonymobile.home.permission.PROVIDER_INSERT_BADGE` - `me.everything.badger.permission.BADGE_COUNT_READ` - `me.everything.badger.permission.BADGE_COUNT_WRITE` ## Similar extensions and apps - [Shikaku: Rectangle Puzzle Game](https://chrome-stats.com/d/com.shikakupuzzle.game) — 6 users - [Kaku: Shikaku Logic Puzzle](https://chrome-stats.com/d/com.thejoyplussoft.kaku) — 22 users - [Shikaku Daily: Logic Puzzle](https://chrome-stats.com/d/com.brainer.shikaku) — 14 users - [Shikaku: Logic Number Puzzle](https://chrome-stats.com/d/com.mmlogicgames.shikaku) — 11 users - [Shikaku Master](https://chrome-stats.com/d/com.bekatsiklauri.shikakumaster) — 23 users - [Shikaku - Puzzle Game](https://chrome-stats.com/d/com.shikakuav.app) — 12 users - [Shikaku - Logic Puzzle](https://chrome-stats.com/d/com.eldstorm.shikaku) — 6,758 users - [Shikaku: Logic Number Puzzle](https://chrome-stats.com/d/com.ignitewebstudio.shikaku) — 3 users - [Shindoku - Shikaku Puzzle](https://chrome-stats.com/d/com.vta.shindoku) — 8,830 users - [Shikaku Link](https://chrome-stats.com/d/com.ZerionGames.ShikakuLink) — 4 users - [Shikaku - Rectangle Puzzle](https://chrome-stats.com/d/net.lilygames.shikaku) — 2 users - [Rectangle Puzzle: Shikaku Game](https://chrome-stats.com/d/com.rena.rectangle) — 5,527 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.opentrop.gridoku)