# Sudoku – Classic Number Puzzle — Daily puzzle · notes · streaks

> Daily puzzle · notes · streaks (iPhone/iPad app by Byeongjin Lee.)

- Source: https://appshunter.io/ios/app/sudoku-classic-number-puzzle/id6795352426 (this page in markdown: same URL + `.md`)
- Developer: [Byeongjin Lee](https://appshunter.io/developer/1448019552)
- Category: Games, Entertainment, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 16 MB
- Languages: American English, Korean
- Released: 2026-08-13
- Data updated: 2026-10-30

## What is Sudoku?

A classic sudoku with the soul of a paper puzzle.

The givens are printed in crisp type; your answers go in with a handwritten
pencil touch. It feels less like a screen and more like the puzzle page of a
morning paper.

◆ WHY YOU'LL LIKE IT
- Quiet, focused solving — no flashy effects
- Build a daily brain-training habit, one puzzle a day
- Pure sudoku: no hints, no hand-holding

◆ FEATURES
- Five difficulties: Easy, Medium, Hard, Expert, Extreme
- Difficulty means technique, not clue count — Extreme genuinely needs the
  advanced patterns, and Expert stops right below them
- Every puzzle has exactly one solution — solvable by logic alone
- Daily Puzzle: the same board for everyone, playable only that day
- Attendance-style streaks with a calendar record
- Pencil notes, undo and redo
- Same-number and row/column/box highlighting
- Duplicates turn red — but the answer is never given away
- A wrong move never ends the game; finish at your own pace
- Best and average times per difficulty, plus separate no-notes records
- Game Center leaderboards: best times and a daily ranking
- Records and your game in progress follow you across devices over iCloud
- Light, dark, or follow the system
- Fully playable offline

◆ ON IPAD
- Write answers straight into a cell with Apple Pencil — the handwriting is
  recognized as you go
- Double-tap the Pencil to switch between notes and answers
- A wide layout that puts the header on one line and keeps the board large

◆ ACCESSIBILITY
- VoiceOver labels for every cell and key
- Dynamic Type across the interface

Open today's puzzle and start your streak. All you need is a pencil.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Is Sudoku safe?

Not enough ratings yet to assess Sudoku.

## Is Sudoku legit?

Sudoku – Classic Number Puzzle appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Sudoku is 70 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 0.2.5 — 2026-08-26

• When an ad doesn't fill, the space now shows one of our other apps instead
  of sitting blank

### 0.2.4 — 2026-08-19

Settings is reorganized and easier to scan

### 0.2.3 — 2026-08-14

No release notes.

## More apps by Byeongjin Lee

- [Crypto Coin Mining Monitor](https://appshunter.io/ios/app/crypto-coin-mining-monitor/id6443868858)
- [Currencies – Converter & Rates](https://appshunter.io/ios/app/currencies-converter-and-rates/id6464373048)
- [오상 – 오늘의 상품권 시세](https://appshunter.io/ios/app/id6747658431)
- [리얼티 - 부동산 계산 및 관리 REALTY](https://appshunter.io/ios/app/realty/id6756365873)
- [Slitherlink – Loop Puzzle](https://appshunter.io/ios/app/slitherlink-loop-puzzle/id6797521877)

All apps by Byeongjin Lee: https://appshunter.io/developer/1448019552

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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 2026-10-30.*