NineByNine
Sudoku with Progression
Only for iPhone
Free
iPhone
Sudoku with progression. Earn XP, unlock achievements, and take on daily challenges across three difficulty levels. Play offline anytime.
NineByNine – Sudoku with Progression
NineByNine reimagines Sudoku with a modern, progression-driven experience. Earn XP, unlock achievements, and improve your skills as you solve beautifully crafted puzzles — whether you’re just starting or aiming for mastery.
THREE DIFFICULTY LEVELS
• Easy – Learn the fundamentals at your own pace
• Medium – Strengthen your logical thinking
• Hard – Test your skills with expert-level grids
DAILY CHALLENGES
Play a new challenge every day to earn bonus XP and coins. Build streaks, unlock rewards, and turn Sudoku into a rewarding daily habit.
PROGRESSION & ACHIEVEMENTS
• Level up by completing puzzles
• Unlock 30+ achievements across multiple categories
• Track perfect games, speed runs, and streaks
HINTS & LIVES SYSTEM
• Start each game with 3 hints and 3 lives
• Earn more as you level up
• Learn solving techniques through strategic hint usage
• Balanced challenge without unnecessary frustration
DETAILED STATISTICS
• Total games played and win rate
• Best completion times by difficulty
• Perfect game tracking (0 mistakes)
• Average completion times
• Daily challenge streak history
LIGHT & DARK MODE
Choose between system, light, or dark mode. Designed to look great day or night, adapting seamlessly to your preference.
CLEAN & INTUITIVE DESIGN
• Smooth animations and satisfying feedback
• Auto-save and resume anytime
• Undo support for quick corrections
• Optimized for all iPhone sizes
OFFLINE & PRIVACY-FIRST
• Play fully offline — no internet required
• No ads, no tracking, no data collection
• All progress stored locally on your device
PERFECT FOR
• Sudoku enthusiasts seeking a premium experience
• Beginners learning logical thinking
• Players who enjoy daily challenges and progression
• Anyone looking for a calm, focused brain workout
WHY NINEBYNINE
• Unlimited puzzles with guaranteed solutions
• Progression-based rewards system
• Daily challenges and streaks
• Achievements and detailed statistics
• Clean, modern interface
• Free to play, no ads, privacy focused
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
The developer, Jasjit Chawla, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jasjit Chawla
- Size
- 62.8 MB
- Category
- Puzzle
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Contains
User-Generated Content
- Copyright
- © 2026 Privy Central
