The Sudoku App Done Right

Final Sudoku

The last Sudoku app you'll ever need.

Pure logic. Zero frustration. Every puzzle is mathematically verified, every difficulty level is honest, and you'll never see an ad. Built by a real Sudoku player who got tired of apps that just didn't get it.

Play on Web Download App
$4.99 One-time purchase.
Yours forever.

Impressive! I've been waiting for a Sudoku app like this for a long, long time!

Jill V. — Sudoku player for 9 years

You added everything I asked for — and more. This is perfect.

Charles O. — Sudoku player for 22 years
The Problem

Most Sudoku Apps Are Broken

They generate puzzles that require guessing, mislabel difficulty, or bury you in ads. Final Sudoku is different. Every puzzle is mathematically verified. Every difficulty level is honest. And you'll never see an ad.

Everything You Need, Nothing You Don't

Enter Your Own Puzzles

Found a puzzle in the newspaper? A friend shared one? This is what sets Final Sudoku apart.

  • Tap and enter any puzzle from newspapers, books, or magazines
  • Automatic validation confirms exactly one solution
  • Use all our tools, hints, and checking on any puzzle you enter
  • Never waste time on impossible or multi-solution puzzles again

Pure Logic Puzzles

No guessing. No trial and error. Every puzzle has exactly one solution, solvable through logic alone with technique-verified difficulty ratings.

Honest Difficulty Levels

Five true levels from Easy to Extreme, each requiring specific solving techniques. When we say Hard, we mean it. No fake "Expert" puzzles that are actually easy.

4 Puzzle Styles

Play with Numbers (1-9), Letters (A-I), Colors, or Greek letters. Same puzzles, fresh perspectives so you're always challenged.

Smart Hints That Teach

Hints explain the logic behind each step, helping you learn real solving techniques. They give you the answer only when you ask for it — not before.

Notes & Candidates

Single press Notes button or long press for automatic Notes. Auto-fill candidates at any stage of the puzzle. Auto-candidate cleanup when you place a number.

Check Your Work

Check your answers against the solution at any stage. Optionally remove wrong numbers automatically. Highlight mistakes, singles, and same numbers as you play.

Fully Customizable

Timer, mistake highlighting, single highlighting, same-number highlighting, auto-candidate cleanup, adjustable font size, and single-handed play on mobile.

Print Your Puzzle

Print your puzzle at any stage — from the very beginning or even partially filled in. Take your Sudoku offline on paper whenever you want.

Detailed Statistics

Total completed puzzles, best streak, average and best times per difficulty, progress charts over weeks and months. Start fresh anytime by deleting all stats.

Designed for Focus

Clean, distraction-free interface. Light, Dark, and OLED display modes. Works completely offline. Zero ads, zero tracking, forever. Just you and the puzzle.

Never Lose Progress

Unlimited undo and redo. Automatic save lets you resume games exactly where you left off. Your game is always safe.

Unlimited Puzzles

5

Difficulty Levels

4

Puzzle Styles

0

Ads. Ever.

Final Sudoku vs. Other Apps

FeatureOthersFinal Sudoku
Enter your own puzzles
Technique-verified difficulty
Guaranteed unique solutions
No guessing required
Multiple display styles
Print your puzzle
Check answers at any stage
Zero ads, ever
One-time purchase

Beautiful, Focused Design

Main game screen
Difficulty selection
Settings
Statistics

Ready for Real Sudoku?

Whether you're a beginner learning the basics or an expert tackling extreme puzzles, Final Sudoku delivers a pure, focused experience without distractions.

$4.99 Lifetime access. All features.
All future updates.
Play on Web App Store Google Play

Satisfaction guaranteed or your money back