# Nonograms - Picross — Professional Grid Puzzles

> Professional Grid Puzzles (iPhone/iPad app by 晓 郭.)

- Source: https://appshunter.io/ios/app/nonograms-picross/id6769714154 (this page in markdown: same URL + `.md`)
- Developer: [晓 郭](https://appshunter.io/developer/1895645928)
- Category: Games
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 1 MB
- Languages: American English
- Released: 2026-05-18
- Data updated: 2026-06-16
- User reviews in markdown: https://appshunter.io/ios/app/nonograms-picross/id6769714154/reviews.md

## What is Nonograms?

Nonograms delivers the definitive picross puzzle experience for iOS, engineered for both casual players and logic puzzle veterans.

CORE MECHANICS:
• Classic nonogram rules with number-based row/column clues
• Three-tier difficulty system: 5×5 (40-60% fill), 10×10 (35-55%), 15×15 (30-50%)
• Three-state cell interaction: Empty → Filled → Marked (X)
• Continuous drag-painting for rapid cell marking
• Real-time error feedback with visual indicators

ADVANCED FEATURES:
• Procedural puzzle generation ensures unlimited unique challenges
• Automatic row/column completion detection with visual strikethrough
• Comprehensive undo system (100-action history)
• Persistent auto-save with state recovery
• Performance timer with difficulty-specific best time tracking
• Adaptive hint system highlights solved sections
• Haptic feedback for enhanced tactile response

TECHNICAL SPECIFICATIONS:
• 100% offline operation - zero network dependencies
• Zero third-party SDKs - maximum privacy and security
• Native SwiftUI implementation for optimal performance
• Dark mode and light mode support
• Optimized for iPhone (portrait orientation)
• iOS 16.0+ compatibility

STATISTICS TRACKING:
• Completion count per difficulty level
• Best time records with timestamp tracking
• Progressive skill development metrics

IDEAL FOR:
• Sudoku enthusiasts seeking new logical challenges
• Students of discrete mathematics and combinatorial logic
• Professionals requiring cognitive maintenance exercises
• Anyone who appreciates elegant, rule-based puzzle systems

Download Nonograms and experience the gold standard in mobile picross puzzles.


## Version history (last 1 release)

### 1.0.0 — 2026-05-18

No release notes.

## More apps by 晓 郭

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- [Periodic table tool](https://appshunter.io/ios/app/periodic-table-tool/id6764566398)
- [KindQuest](https://appshunter.io/ios/app/kindquest/id6768220368)

All apps by 晓 郭: https://appshunter.io/developer/1895645928

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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 2026-06-16.*