# NumberNest

> NumberNest (iPhone/iPad app by Dang Van Son.)

- Source: https://appshunter.io/ios/app/numbernest/id6807284740 (this page in markdown: same URL + `.md`)
- Developer: [Dang Van Son](https://appshunter.io/developer/6804943908)
- Category: Games
- Price: Free
- Age rating: 17+
- Requires: iOS 15.0 · 8 MB
- Languages: American English
- Released: 2026-09-08
- Data updated: 2026-10-07
- User reviews in markdown: https://appshunter.io/ios/app/numbernest/id6807284740/reviews.md

## What is NumberNest?

Sudoku Challenge brings a focused, score-driven take on the classic number puzzle.

Choose your challenge:
• Easy — 40 clues for a welcoming start
• Medium — 33 clues for a deeper test
• Hard — 27 clues for experienced solvers
• Inferno — 22 clues for an extreme challenge

Every puzzle is a race against the clock. Select a cell, enter a number, and get immediate feedback as you solve. Incorrect entries are highlighted and removed, while time penalties keep every decision meaningful.

Build your record with:
• Timed Sudoku gameplay
• Four difficulty levels
• Score, completion, and best-time tracking
• Personal profile name and photo
• Shareable achievement cards

Whether you have a few minutes or want to take on a serious logic challenge, Sudoku Challenge gives you a fresh grid and a clear goal: solve it before time runs out.

Your profile and game progress are stored on your device.

Sudoku is a logic-based number-placement puzzle that primarily tests and enhances the following cognitive skills and abilities:

Logical Reasoning: Sudoku requires zero arithmetic; it relies entirely on logic. Players must use deduction and elimination strategies (e.g., Naked Singles, Hidden Pairs) to determine the correct placement of missing numbers.

Observation and Attention to Detail: Players must scan the grid across rows, columns, and subgrids to spot patterns, missing values, and subtle opportunities, which sharply improves visual scanning and focus.

Working Memory: Solving advanced puzzles requires holding multiple candidate digits and potential deduction paths in mind simultaneously, strengthening short-term memory and processing capacity.

Pattern Recognition & Spatial Awareness: Successfully navigating the game requires seeing the board holistically—balancing the demands of rows, columns, and 3×3 blocks at the same time to avoid logical deadlocks.

Patience and Problem-Solving Resilience: High-level puzzles often feature sticking points where blind guessing leads to failure. Sudoku trains a disciplined, systematic approach to tackling complex problems step by step.


## Version history (last 3 releases)

### 1.2 — 2026-09-21

Optimizing IDFA permission request cannot pop up bug.

### 1.1 — 2026-09-12

Add tracking for IDFA permission requests.

### 1.0 — 2026-09-09

No release notes.

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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 2026-10-07.*