Sudokoo is a clean, distraction-free Persian Sudoku — built for the pure joy of solving. Persian numerals, right-to-left design, and the Jalali (Solar Hijri) calendar.

Play six difficulty tiers, from Easy to Grandmaster, unlocking harder puzzles as you improve. Every day brings a new Daily Challenge based on the Jalali calendar — keep your daily streak alive and collect stars.

Features:

• Six difficulty levels: Easy, Medium, Hard, Expert, Master, Grandmaster
  
• Daily Challenge on the Jalali calendar, with star collection
  
• Smart hints that reveal the next logical step — not just filling a cell
  
• Notes mode, undo, and highlighting of related cells and matching numbers
  
• Full stats: wins, win rate, best times, and daily streaks
  
• A set of profile avatars
  
• Light, Dark, and Midnight themes
  
• Adjustable sound, music, and haptics
  
• Fully offline — no sign-up, no internet required
  

Sudokoo is free. You can optionally buy coins for extra hints, but you can also earn every coin by winning games and completing the Daily Challenge.

Suitable for all ages. No personal data is collected.