Sudoku Master: Learn & Solve

Sudoku Master is a sudoku app that teaches you to solve, not just a place to tap numbers.

Most sudoku apps give you a hint by filling in a cell. You get the digit and learn nothing. Sudoku Master names the technique, shows you the cells it read, and explains the reasoning — then lets you open the full lesson on it.

LEARN EVERY TECHNIQUE
14 lessons, each with a diagram and a practice board that genuinely needs that technique:
• Scanning, naked singles, hidden singles
• Pencil marks and checking your work
• Pointing pairs and claiming pairs
• Naked pairs, hidden pairs, naked triples
• X-Wing, Swordfish, XY-Wing

Tap "What's this?" on any hint and you land in the matching lesson. Your puzzle waits for you, and the clock stops while you read.

HINTS THAT EXPLAIN
Smart hints work out the next logical step the way a solver would, tell you which technique applies and why, and highlight the cells the deduction is read from — so you can check it by eye instead of taking it on faith.

HONEST DIFFICULTY
Easy, Medium, Hard, Expert. Most apps set difficulty by counting blank cells. Sudoku Master grades every puzzle with its own hint engine and only labels it Hard or Expert if solving it genuinely requires harder techniques. Every puzzle is solvable by pure logic — you will never need to guess.

THREE GRID SIZES
• Mini 4x4 — a couple of minutes
• Classic 9x9 — the real thing
• Giant 16x16 — digits and letters, for a long evening

DAILY CHALLENGE
A new puzzle every day, the same one for everyone, with a streak to keep and a history of what you have finished.

PLAY OFFLINE, NO ACCOUNT
Puzzles are generated on your phone. No sign-up, no login, no internet needed to play. Your stats stay on your device.

BUILT FOR LONG SESSIONS
• Pencil marks with optional auto-clear after a placement
• Duplicate warnings and mistake checking, both switchable
• Remaining-digit counts
• Undo and redo
• Pause and resume exactly where you left off
• Five themes including a true dark mode, plus light/dark/system

SUDOKU MASTER PRO
One payment, no subscription: removes all ads, unlocks every theme, and gives unlimited smart hints.

WHO IT IS FOR
• New to sudoku — start on Mini 4x4 or Easy, with lessons that assume nothing
• Stuck at Medium — the Learn section is the bridge to Hard
• Experienced solver — Expert puzzles that actually require X-Wing, Swordfish and XY-Wing, and 16x16 grids to stretch out in

A logic puzzle, a number game and a brain training habit in one: no timers forcing you, no energy to wait for, no ads between every move.

Whether you are learning your first hidden single or hunting a Swordfish on a 16x16 grid, Sudoku Master meets you there.

Recent changes:
Sudoku Smart is now Sudoku Master.

NEW - Learn: 14 lessons covering every technique the hint button uses, from
scanning to Swordfish. Each has a diagram and a practice board that needs it.

Smarter hints: a hint now names the technique and explains the reasoning,
instead of just filling in a cell.

Honest difficulty: Hard and Expert are measured by the techniques a puzzle
requires, not by how many cells are blank. Expect them to feel harder.

Giant 16x16 puzzles now generate instantly.