# DayDoku: Daily Sudoku — One puzzle a day, every day

> One puzzle a day, every day (iPhone/iPad app by ILHO PARK.)

- Source: https://appshunter.io/ios/app/daydoku-daily-sudoku/id6780019972 (this page in markdown: same URL + `.md`)
- Developer: [ILHO PARK](https://appshunter.io/developer/6774891968)
- Category: Games, Board
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 35 MB
- Languages: American English, Korean
- Released: 2026-06-15
- Data updated: 2026-08-26
- User reviews in markdown: https://appshunter.io/ios/app/daydoku-daily-sudoku/id6780019972/reviews.md

## What is DayDoku?

■ One puzzle a day — DayDoku, a minimalist sudoku game built around a daily habit.

DayDoku is a clean, focused sudoku app designed for one quick puzzle a day. Wake up your brain, build a streak, and enjoy the quiet satisfaction of showing up.

■ Why I made this
I'm a developer who loves playing sudoku. I got tired of how aggressive ads were in the apps I used — they kept interrupting the very thing I came to do. So I built the app I wanted to use. DayDoku makes one promise: you will never see an ad while you're solving a puzzle.

■ Ads, kept minimal
• No ads while you're playing — the promise
• No interstitials, no video ads
• A single small banner only on menu screens (home, stats, settings, result, help)
• Non-personalized ads to limit tracking

■ A new challenge every day
Every midnight, one Today's Challenge unlocks for every player worldwide. Difficulty steps up across the week:
• Monday: Beginner
• Tuesday: Easy
• Wednesday: Medium
• Thursday: Hard
• Friday: Expert
• Saturday & Sunday: Master

■ Streak rewards
Finish the daily challenge day after day, and DayDoku gives you more allowed mistakes and hints per game.
• 3 days: +1 mistake
• 7 days: +1 hint
• 14 / 30 / 60 / 100 days: more bonuses unlock
Miss a day and the streak resets — so keep showing up.

■ Free Mode in six difficulties
Play whenever you want. Pick from Beginner, Easy, Medium, Hard, Expert, and Master to match your mood.

■ A clean playing experience
• Notes (pencil marks) for candidate numbers
• Hints fill in one correct cell
• Undo / Redo
• Pause, auto-save, and resume any time
• Daily and Free Mode are saved in separate slots — starting one never overwrites the other

■ Light and fast
• Fully offline — works without internet
• Minimal design with full dark-mode support
• Korean and English

■ Who it's for
• Anyone looking for a quiet brain workout on the commute or before bed
• Habit-builders who want a tiny daily ritual that sticks
• Sudoku fans who hate ads getting in the way of play

Today's puzzle is waiting. Start your streak.


## Version history (last 5 releases)

### 1.0.8 — 2026-08-21

• No more sudden game-overs from mistakes
    - Free Mode: even after using all your allowed mistakes, tap "Keep playing" to finish the puzzle. (This run isn't recorded.)
    - Today's Challenge: mistakes beyond your allowance now add a +10s time penalty instead of ending the game — so you can always finish.

### 1.0.5 — 2026-07-20

- Stability improvements

### 1.0.4 — 2026-07-06

• Screen capture and recording are now restricted on the game screen — everyone solves the same daily puzzle, so this keeps answers from being spoiled                                                   
• Added "Rate DayDoku" in Settings — leave a rating and review on the store

### 1.0.3 — 2026-07-01

• Stability and performance improvements

### 1.0.2 — 2026-07-01

• Fixed an issue where a broken streak could still appear as active, keeping the previous rewards.
  • Stability and performance improvements

## More apps by ILHO PARK

- [복불복 게임(Random Game)](https://appshunter.io/ios/app/random-game/id6774891966)
- [BowlTrace: Bowling Analysis](https://appshunter.io/ios/app/bowltrace-bowling-analysis/id6792940057)

All apps by ILHO PARK: https://appshunter.io/developer/6774891968

## Related topics

[sodoku a day](https://appshunter.io/ios/topics/sodoku-a-day)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*