# Sudoku.city: Classic Puzzle — Daily Brain Training & Logic

> Daily Brain Training & Logic (iPhone/iPad app by Kim sung jun.)

- Source: https://appshunter.io/ios/app/sudokucity-classic-puzzle/id6759892902 (this page in markdown: same URL + `.md`)
- Developer: [Kim sung jun](https://appshunter.io/developer/1155903456)
- Category: Games, Education, Board, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 13 · 65 MB
- Languages: American English
- Released: 2026-03-11
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/sudokucity-classic-puzzle/id6759892902/reviews.md

## What is Sudoku.city?

Sudoku.city is a comprehensive sudoku puzzle app featuring a vast collection of unique number puzzles, daily challenges, and smart hints designed to teach you real solving techniques.


Whether you're a sudoku beginner or an expert solver, Sudoku.city offers a tailored brain training experience with 5 difficulty levels — from easy sudoku puzzles to expert-level challenges that will test your logic skills.


EXTENSIVE PUZZLE COLLECTION

Play unique sudoku puzzles with fresh content added regularly. Enjoy a satisfying and fair solving experience with number puzzles carefully crafted for every skill level.


5 DIFFICULTY LEVELS

- Beginner: Learn sudoku rules and basics

- Easy: Relaxing puzzles for everyday brain training

- Medium: A balanced challenge for regular puzzle solvers

- Hard: Test your advanced logic and sudoku strategies

- Expert: The ultimate challenge for sudoku masters


DAILY SUDOKU CHALLENGE

Take on a brand-new sudoku puzzle every day! Track your streaks, earn medals, and compete with yourself. Collect monthly trophies and monitor your progress on the challenge calendar.


SMART HINTS THAT TEACH

Our hint system goes beyond giving answers—it teaches you sudoku solving techniques step-by-step:

- Last Empty Cell & Last Remaining Cell

- Naked Single technique

- Visual explanations with highlighted rows, columns, and boxes


TRACK YOUR PROGRESS

- Detailed statistics for each difficulty level

- Personal best times, win rates, and accuracy

- 8 unique achievements to unlock (Speed King, Perfect Game)

- Monthly trophy collection for daily challenge streaks


FEATURES YOU'LL LOVE

- Notes/pencil marks for candidate numbers

- Unlimited Undo moves during gameplay

- Dynamic scoring with combo multipliers

- Clean, modern design with Light and Dark themes

- Sound effects and haptic feedback


GLOBAL LANGUAGE SUPPORT

Play in your preferred language! Sudoku.city supports English, Korean, Japanese, Chinese, Spanish, French, German, Italian, Russian, and more than 20 languages.


PRIVACY FOCUSED

Jump straight into the game—no sign-up or login required. Your progress is saved locally. We value your privacy with no unnecessary tracking.


Download Sudoku.city today and start your daily brain training with our logic-based number puzzle game!


## Version history (last 2 releases)

### 1.0.2 — 2026-03-18

● Bug fixes

### 1.0 — 2026-03-11

No release notes.

## More apps by Kim sung jun

- [삼국지퀴즈](https://appshunter.io/ios/app/id1463387102)

All apps by Kim sung jun: https://appshunter.io/developer/1155903456

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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 2026-05-16.*