Not Evil Sudoku review

Not Evil Sudoku is a direct answer to ad-heavy sudoku apps. Its official site says no ads, no tracking and no data mining, and the App Store listing repeats No ads or distractions in its feature list. Each day brings a puzzle synced across all users, which you can play at Easy, Medium or Hard and rank on leaderboards that track whether you used assists. Shake the phone for a hint on the next logical move, turn on real-time move validation, and use notes that clear themselves when they go out of date. Streaks, best times and charts track progress, and the whole app works offline. An optional Pro purchase costs $4.99 on the US App Store. The limits are three difficulty levels, a single puzzle type and no Android or web version. We compared documented features and published prices.

Who it is for

Sudoku players on iPhone who want a daily puzzle with no ads

Price

Free with daily puzzles and no ads; Pro costs $4.99 on the US App Store.

Pro $4.99
Quoted from the vendor pricing page on November 11, 2026.

Key features

• Daily puzzle synced across all players, at Easy, Medium or Hard
• Shake for a hint on the next logical move
• Real-time move validation, notes and auto-clear notes
• Leaderboards with assist tracking, streaks and best times
• Fully offline play

Strengths and weaknesses

• Strength: Official site says no ads, no tracking, no data mining
• Strength: Works fully offline
• Strength: Hints point to the next logical move instead of just revealing a number
• Weakness: Three difficulty levels, fewer than some sudoku apps
• Weakness: No Android or web version
• Weakness: Some extras sit behind the $4.99 Pro purchase

Key facts

• Difficulty levels: Easy, Medium, Hard
• Pro: $4.99 on the US App Store
• Languages: English and 7 more
• Developer: Ashish Selvaraj

Where it ranks

Not Evil Sudoku is No. 7 in our Best Free Puzzle Games Without Ads verdict.