# Sudoku Isle - Number Puzzle — Smart hints & daily puzzles

> Smart hints & daily puzzles (iPhone/iPad app by Lychee Isle Co.)

- Source: https://appshunter.io/ios/app/sudoku-isle-number-puzzle/id6793022636 (this page in markdown: same URL + `.md`)
- Developer: [Lychee Isle Co](https://appshunter.io/developer/1651467135)
- Category: Games, Entertainment
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 8 MB
- Languages: American English, French (France), German (Germany), Japanese, Chinese (Simplified, China), European Spanish
- Released: 2026-08-31
- Data updated: 2026-09-06
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-isle-number-puzzle/id6793022636/reviews.md

## What is Sudoku Isle?

A clean, modern Sudoku experience. Choose from four difficulty levels, solve puzzles at your own pace, and use smart hints that actually teach you the technique when you're stuck.

FEATURES
- Four difficulties: Easy, Medium, Hard, and Expert - every puzzle has a unique solution
- Daily Challenge: everyone in the world gets the same puzzle each day; build your streak and catch up on missed days from the calendar
- Global leaderboard: submit your score and see how you rank
- Teaching hints: learn Naked Singles, Hidden Singles, and more with clear explanations
- Undo and redo, notes with auto-fill, and auto-removal of stale notes
- Statistics: win rate, best time, and streaks per difficulty
- Flexible settings: Auto-Check, mistake limit, timer, sounds, and highlighting
- A single one-time purchase removes all ads forever - no subscription

Track your time, challenge yourself with harder levels, and enjoy the satisfaction of a completed grid. Simple, elegant, and endlessly replayable.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sudoku Lifetime | $3.99 | one-time |



## Version history (last 2 releases)

### 1.1 — 2026-09-03

- Auto-Check is on by default: wrong numbers are flagged right away so the puzzle cannot become unsolvable
- Turn Auto-Check off in Settings if you prefer a classic paper-style solve
- Bug fixes and polish

### 1.0 — 2026-08-31

No release notes.

## More apps by Lychee Isle Co

- [Wrino](https://appshunter.io/ios/app/wrino/id6444012461)
- [Askbot - Multi-Model AI Chat](https://appshunter.io/ios/app/askbot-multi-model-ai-chat/id6446911867)
- [Kicku](https://appshunter.io/ios/app/kicku/id6475641638)
- [ReTab - Tab Switch for Safari](https://appshunter.io/ios/app/retab-tab-switch-for-safari/id6736950080)
- [ThinkScan AI](https://appshunter.io/ios/app/thinkscan-ai/id6748367088)
- [Isle Animals](https://appshunter.io/ios/app/isle-animals/id6752812545)

All apps by Lychee Isle Co: https://appshunter.io/developer/1651467135

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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 2026-09-06.*