Apex Sudoku
Apex Sudoku app icon

Sudoku, refined.

A calm, beautifully crafted sudoku with six real difficulty levels, hints that teach you the technique, and a new daily challenge every morning. Free to play. No ads. No tracking.

Coming soon to theApp Store Coming soon toGoogle Play

Everything a great sudoku should be

Thoughtful details at every step, from the first easy grid to the hardest puzzles you'll ever solve.

Difficulty you can trust

Six levels, graded by the solving techniques each puzzle actually needs, from simple singles to long chains. Every puzzle solves by logic alone. No guessing.

Hints that teach

Stuck? Hints read your own notes and teach one idea at a time, easiest first: a nudge like "Look for a Hidden Single: 5 has only one place left in box 3", then Show me highlights the pattern. Tap a technique's name to learn how to spot it.

A daily challenge

A new puzzle every day at every level, the same for everyone. Build a streak and watch your calendar fill with checks and crowns in each level's color.

Smooth, smart play

Pencil notes that clear themselves, unlimited undo, and highlights that show where a number is and every note where it could still go. Tap a cell or a number first, whichever suits you.

Stats and achievements

Best and average times, win rates and perfect games for every level, plus sixteen achievements to unlock along the way.

Made to feel good

Gentle haptics, soft sounds, a burst of confetti when you solve, a color for every level, light and dark mode and six themes, on iPhone, iPad and Android, in portrait or landscape.

Six levels, one smooth climb

Start where you're comfortable, then reach for the summit.

BeginnerPlenty of clues. Every move is a simple single.
EasyFewer clues, still solvable with singles alone.
MediumLocked candidates and pairs.
HardTriples, X-Wings and XY-Wings.
ExpertSwordfish, XYZ-Wings and coloring.
MasterLong chains. For seasoned solvers.

Free to play, Pro when you want more

Play today's Daily at every level for free, every day. One purchase unlocks everything else, for good. No subscription.

Free

Always free

  • Today's Daily at all six levels, every day
  • Daily streaks, stats and achievements
  • 3 hints per game
  • The technique guide
  • Classic theme, light and dark
  • Backups you can move to a new phone

Apex Sudoku Pro

One-time purchase

  • Unlimited games at every level
  • Every past Daily from the calendar
  • Unlimited hints
  • All six themes
  • Cell coloring to track chains by hand
  • iCloud sync between your iPhone and iPad
  • Share with your family through Family Sharing
  • Keeps Apex Sudoku ad-free and independent

Clean, focused screens that keep the puzzle front and center.

Play screen greeting the player, with a 12-day streak and a Medium game to continue
Pick up where you left off
A Medium puzzle with pencil notes, highlighting every 7 and the notes where a 7 could go
Notes and smart highlights
Results screen for a perfect game, with gold confetti, a new best time and two achievements unlocked
Celebrate every solve
Daily challenge with a 12-day streak and a calendar marked in each level's color
Keep your streak alive
Statistics with colored icons, and unlocked achievement badges
Track your progress
The game in dark mode
Beautiful in the dark

Private by design

Apex Sudoku is just a game. It doesn't need to know anything about you, so it doesn't ask.

No account

Open it and play. Nothing to sign up for.

No ads

Nothing interrupts your puzzle.

No tracking

No analytics and no data collection. Your progress stays on your device, or in your own iCloud with Pro sync, and you can back it up to a file whenever you like.

Works offline

Plane, train or tunnel. Every puzzle and feature works without a connection. Only buying or restoring Pro needs one, and iCloud sync catches up when you're back online.