Sudoku Star - Free 2.2

This Sudoku application is tailored for serious enthusiasts seeking a high-level playing experience. While developed by a smaller team, the software has garnered notable praise from users beyond personal recommendations, reflecting its quality and appeal.

• "The best Sudoku available. Exceptional gameplay."
• "Undoubtedly the top choice. Having tried numerous Sudoku apps, this one surpasses them all."
• "Easily the most refined Sudoku implementation on the iPhone."
• "The premier Sudoku on any computing device. It stands out among its peers."
• "This is the only Sudoku game I’ve maintained on my iPhone after trying many others. Excellent execution—thanks for a superb product."
• "Among the many top-rated Sudoku apps I’ve tested, this is the one I genuinely prefer to play. I wish I had discovered it sooner."
• "Exceptional Sudoku experience on iPhone—arguably the best available."
• "All claims about its excellence are justified; Sudoku Star truly delivers exceptional quality."

Platform Compatibility:

• Universal application compatible with iPhone, iPad, iPad Mini, and iPod Touch
• Optimized for screens of 3.5, 4.0, 4.7, and 5.5 inches
• Adapted UI for iOS versions 5 through 8

Core Features:

• Unlimited gameplay with five difficulty levels that are doubly graded
• Generation of symmetric puzzles with unique solutions
• Six customizable color schemes
• Integrated puzzle solver tool
• Autosave functionality to resume interrupted games
• Comprehensive game statistics including wins and performance metrics

Gameplay Assistance:

• Automatic and manual pencil mark options
• Graduated hint system integrated for player aid
• Bookmark feature allowing backtracking during trial-and-error solving

Visualization Options:

• Color-coded error highlighting (optional)
• Conflict visualization (optional)
• Highlighting of selected digits and pencil marks (optional)
• Feedback on completed digits

User Interface Excellence:

• Flexible entry modes—digit-first or cell-first
• Larger, easy-to-read digit displays
• Unlimited undo/redo capabilities, including undoing to last correct step
• No intrusive pop-up menus covering puzzles
• Key features accessible directly from the main screen
• Designed to enhance overall playability and user experience

The free version is ad-supported yet fully functional, offering all core features. Upgrading to the paid version eliminates ads and introduces additional functionalities—most notably on newer devices such as iPhone 5/5S/5C/6/6+, where an extra row of digit buttons facilitates entering pencil marks without mode switching.