PlusGrid vs Nonograms

PlusGrid is a cozy number puzzle — a relaxed mix of Sudoku, Kakuro and Killer Sudoku. Fill the empty cells with digits so that every row adds up to the number on its left, and every column adds up to the number on top. Just like Sudoku, no digit may repeat within a row or a column. Each puzzle uses only a small set of consecutive digits. • Three grid sizes: 3×3, 4×4 and 5×5 • Three difficulties — from a quick warm-up to a real brain-teaser • Pencil-mark notes, hints, and unlimited undo • A timer, streaks and per-mode best times • Light and dark themes • A short interactive tutorial for new players • English, Russian, Spanish and French • Plays fully offline — no account, no ads, no tracking Perfect for a few quiet minutes on a break, a commute, or before bed. Just you, a tiny grid, and a satisfying click when every line turns green.

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.