Cerebrum: Sudoku & Crossword

Your streak has a guardian now: a live countdown on your Lock Screen when it's in danger. 4 puzzle games to sharpen your brain, one day at a time.

Cerebrum brings four timeless puzzle classics into one app: Sudoku, Crossword, Word Search and Cross Math. No subscription wall between you and any game. No Wi-Fi needed to play.

— FOUR PUZZLE GAMES — • Sudoku — Classic 9×9 number puzzles with smart hints and notes • Crossword — Clue-filled grids in English & French, three difficulties • Word Search — Find hidden words across themed grids • Cross Math — Solve equation grids with strategic number placement

— PROGRESS THAT REWARDS YOU — • 100 hand-curated levels per difficulty (400+ per game) • Endless Mode unlocked at level 100 — never run out of puzzles • Earn 1 to 3 stars based on time, hints used, and accuracy • Track your best score and best time on every level

— DAILY CHALLENGE & STREAKS — • A new puzzle every day across all four games • Build your daily streak — bonus XP for every consecutive day • Lose your streak? Recover it with a watched ad (within 48h)

— LEAGUES & TROPHIES — • Climb seven leagues from Bronze to Legend • Score-based promotion across the entire suite • Unlock new avatars at 7 and 30 day streaks

— THEMED GRIDS — • Cinema, Food and Travel themes for Crossword and Word Search • Carefully curated word lists in English and French

— DESIGNED FOR EVERYDAY PLAY — • iPhone and iPad support with adaptive layouts • Light & dark mode • Full Dynamic Type and VoiceOver accessibility • Sign in with Apple, Google or Facebook to sync progress across devices • Play offline — your progress syncs automatically when you reconnect

— OPTIONAL UPGRADES — • Coin packs to grab hints when you need them • Ad-Free monthly or yearly subscription if you prefer puzzles uninterrupted • Theme packs to unlock seasonal collections

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Subscriptions auto-renew unless canceled at least 24h before the end of the period. You can manage subscriptions and turn off auto-renewal in your Account Settings after purchase. Any unused portion of a free trial period (if offered) will be forfeited when you purchase a subscription.