# Sudoku Classic – Number Puzzle — Classic Number Puzzle

> Classic Number Puzzle (iPhone/iPad app by Kyusung Lee.)

- Source: https://appshunter.io/ios/app/sudoku-classic-number-puzzle/id6782363654 (this page in markdown: same URL + `.md`)
- Developer: [Kyusung Lee](https://appshunter.io/developer/1812204026)
- Category: Games, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 63 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-06-21
- Data updated: 2026-08-13
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-classic-number-puzzle/id6782363654/reviews.md

## What is Sudoku Classic?

Sudoku Classic — the cleanest brain puzzle you can play with numbers.

No sign-up, no hassle — just start playing. With 4 difficulty levels from Easy to Expert and a fresh Daily Challenge every day, there's always a round waiting to wake up your brain. Ads are kept to a minimum, and you can play offline anytime — no internet needed.

[Key Features]
- 4 difficulty levels: Easy / Medium / Hard / Expert
- Daily Challenge: a new puzzle every day — build your streak
- Notes mode: pencil in candidate numbers and solve with pure logic
- Undo / redo / erase to fix mistakes freely
- Hints to give you a nudge when you're stuck
- Same-number highlight, related-cell highlight, and mistake indicators for comfortable solving
- Statistics: win rate, best time, average time, and streaks at a glance
- Dark mode support that's easy on your eyes
- Auto-save: pause anytime and pick up right where you left off

On the subway, at a café, before bed — fill your spare minutes the smart way.


## Version history (last 5 releases)

### 1.0.9 — 2026-08-10

Notification reliability improvements and bug fixes

### 1.0.7 — 2026-08-01

• Stability improvements and better update notifications

### 1.0.6 — 2026-07-28

• The app name on your home screen now matches your device language
• Stability and error-reporting improvements

### 1.0.5 — 2026-07-22

• Choose your theme: System / Light / Dark
• Notification permission is now requested when it's actually needed, not at first launch
• Stability improvements

### 1.0.4 — 2026-07-16

• 제안하기 개선 — 답변받을 이메일을 남길 수 있어요
• 안정성 및 오류 처리 개선

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| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [Nonogram - Jigsaw Number Game](https://appshunter.io/ios/app/nonogram-jigsaw-number-game/id1503138606) | 4.7 (3,938) | Free | Games |
| [Search It - Hidden Objects](https://appshunter.io/ios/app/search-it-hidden-objects/id6756185760) | 4.9 (33,931) | Free | Games |
| [Sudoku.com - Number Games](https://appshunter.io/ios/app/sudokucom-number-games/id1193508329) | 4.8 (1,843,599) | Free | Games |

## More apps by Kyusung Lee

- [AI 로또픽](https://appshunter.io/ios/app/ai/id6753566811)
- [TunerKit](https://appshunter.io/ios/app/tunerkit/id6781897343)
- [WeatherKok - Weather & Air](https://appshunter.io/ios/app/weatherkok-weather-and-air/id6782626480)
- [I'm Okay – Daily Safety Check](https://appshunter.io/ios/app/im-okay-daily-safety-check/id6783291566)
- [Buy or Not](https://appshunter.io/ios/app/buy-or-not/id6783292142)

All apps by Kyusung Lee: https://appshunter.io/developer/1812204026

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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 2026-08-13.*