# WorldNumberPuzzle — Number puzzle by world number

> Number puzzle by world number (iPhone/iPad app by Kiuchi Izumi.)

- Source: https://appshunter.io/ios/app/worldnumberpuzzle/id6758315273 (this page in markdown: same URL + `.md`)
- Developer: [Kiuchi Izumi](https://appshunter.io/developer/1837815412)
- Category: Entertainment, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 47 MB
- Languages: American English
- Released: 2026-06-10
- Data updated: 2026-07-22
- User reviews in markdown: https://appshunter.io/ios/app/worldnumberpuzzle/id6758315273/reviews.md

## What is WorldNumberPuzzle?

This is a classic 9×9 Sudoku puzzle app featuring writing systems from around the world.

Play puzzles displayed in 25 different scripts and numeral systems, including Kanji numerals, Roman numerals, Greek numerals, Hangul numerals, Thai numerals, Arabic numerals, and more.

Recommended for people who:

- Love Sudoku
- Are interested in world languages and writing systems
- Want a quick mental refresh during the day
- Enjoy puzzle games with long-term goals and achievements

Main Features

Standard Play  
Choose any difficulty level (Beginner, Intermediate, Advanced, Expert) and writing system to enjoy Sudoku at your own pace.

Daily Challenge  
Take on a new challenge every day using multiple writing systems. Clear puzzles to fill your calendar and build your streak.

Achievements & Titles 
Track completion records and best times for every writing system and difficulty level. Collect medals and unlock titles as you progress.

Note-Taking Mode 
Write down candidate numbers and solve puzzles carefully with memo support.

Timer Tracking
Measure your solving time and compete against your personal best records.

Multilingual Support
Available in English, Japanese, Korean, and Arabic.

No account registration required.

Whether you have three minutes during your commute or want a focused puzzle session at night, discover a fresh way to enjoy Sudoku through the writing systems of the world.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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



## Version history (last 4 releases)

### 1.0.3 — 2026-06-11

Add review alert.

### 1.0.2 — 2026-06-10

Add user review.

### 1.0.1 — 2026-06-10

Add marketing URL.

### 1.0 — 2026-06-10

No release notes.

## More apps by Kiuchi Izumi

- [ご褒美スタンプカード](https://appshunter.io/ios/app/id6751991649)

All apps by Kiuchi Izumi: https://appshunter.io/developer/1837815412

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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 2026-07-22.*