Sudoku Crew

Daily Sudoku with your group — same puzzle, race the clock, see who finishes first. New leaderboard every morning.

Sudoku Crew is a clean, ad-free Sudoku app built around one idea: race the same daily puzzle as your friends and see how you stack up.

EVERY DAY, ONE PUZZLE Everyone plays the same puzzle each day. Solve fast, solve clean — your time, mistake count, and assists used appear on your group's leaderboard.

PRIVATE FRIEND GROUPS Create a group, share the invite code, and you're set. No public leaderboards, no strangers, no follower counts. Just your people.

PLAY WITH FRIENDS, TURN BY TURN Multiplayer mode is turn-based async sudoku: place one digit per turn, wrong guesses end your turn. Notifications poke you when it's your go, so you can play across hours or days without staring at the screen. Send an invite link to anyone.

YOUR OWN PACE TOO Plenty of generated puzzles across Easy, Medium, and Hard if you want to play outside the daily. Mistakes counter, pause, in-progress saves — all the standard quality-of-life stuff is in.

A TUTOR THAT ACTUALLY TEACHES Stuck on a hard puzzle? Tap the lightbulb. The tutor walks you through how to find the next move — 21 techniques in total, from naked and hidden singles up through pointing pairs, box-line reduction, X-Wing, XY-Wing, XYZ-Wing, W-Wing, Swordfish, Skyscraper, Empty Rectangle, 2-String Kite, Finned X-Wing, Finned Swordfish, Jellyfish and more. It highlights the cells, shows the candidates, and narrates the deduction step-by-step. Learn while you play.

COACH MODE Want to drill a specific technique? Coach Mode loads hand-built boards where one technique is the next move you need to make. Get X-Wing into your bones in a few minutes, then move on to XY-Wing.

AUTO-PENCIL ASSIST One tap fills in the candidates for every empty cell, so you can focus on the deductions instead of bookkeeping. Optional — never forced.

THOUGHTFUL DETAILS

• Subtle sound effects (off-able), all under half a second
• Completion fanfare with confetti when you solve
• Respects your phone's volume controls
• Dark and light themes that match the system
• Hardware keyboard support on iPad

PRIVACY-FIRST

• No ads. Ever.
• No trackers. No analytics. No advertising IDs.
• We collect only the bare minimum: an email for sign-in, the display name you choose, your scores, and a push token for multiplayer turn notifications. Nothing else.
• Delete your account from inside the app at any time — actually deletes everything.
• Open about it: see https://sudoku.appfoundry.cc/privacy

If you and a few friends want a daily puzzle ritual without the noise of a global leaderboard or the friction of ads, this is for you.