Binairo vs Casellina

Fill the grid with 0s and 1s. Just three simple rules. Binairo — also known as Takuzu or Binary Puzzle — is pure logic: no luck, no math. And when you get stuck, the hint tells you why a cell is decided, not just what goes there. A calm, Japanese-inspired design makes a few minutes a day feel like a quiet reset. ◆ THREE THINGS TO KNOW • Free to start, no subscription (one-time purchase only) • No third-party ads (only promotions for our own other apps) • Your records stay on your device (no account, nothing uploaded) ■ HOW TO PLAY Put a 0 or a 1 in every cell, following three rules: • Never three of the same number in a row or column • Each row and column has equal 0s and 1s • No two rows and no two columns are identical ■ FEATURES • Every puzzle has exactly one solution (checked in-app before it's shown) • Four levels: Easy 6x6, Medium 8x8, Hard 10x10, Expert 12x12 • Daily puzzle: everyone plays the same one, with streaks and a calendar • Two styles: numbers (0/1) or two-color stones • Mistake highlighting, remaining counts, undo, and clear all • Explained hints that tell you the rule behind each move • Stats for solves, best times, and no-hint rate, plus 10 badges • Japanese-inspired board themes • A short, hands-on tutorial for first-timers ■ GREAT FOR YOU IF… • You love Sudoku and want a fresh logic puzzle • You prefer clean deduction over guessing • You want to learn the reasoning, not just get the answer • You want a calm mental break on the commute or before bed • You enjoy apps with a quiet, minimal look ■ PRIVACY • No account or sign-up • Puzzles are generated on your device, and you can play offline • Your records stay on your device and are never uploaded • No data collection • To show our other apps, Binairo loads public App Store info (names and icons)

Casellina brings together fifteen logic and card games, made with care. No ads, no lives to lose, no account. One square at a time; logic does the rest. NINE GRID PUZZLES • Quadretto: sudoku, plus the 6 × 6 Mini. • Pareggio: takuzu, the binary puzzle, classic or with signs. • Stelletta: place the stars, one or two in every row, column and region. • Addendo: kakuro, cross sums. • Ponticello: hashi, bridges between islands. • Toppetta: shikaku, cut the grid into rectangles. • Filino: a numbered path through every square. • Incastro: crossword sums, four grids a day. • Bandierina: mine-clearing where you never have to guess. MAZZETTO, FIVE SOLITAIRE GAMES Klondike, Spider, FreeCell, Pyramid and TriPeaks, with their classic rules: draw 1 or 3, one to four suits, FreeCell's numbered deals. If you like, only deals known to be winnable. THE STUDIOLO, OUR ORIGINAL GAMES • Pennellino: three brushes, red, yellow and blue, paint the whole grid; where they cross, their colours mix. A brand-new puzzle, invented at Nidello. PLAY ANYWHERE, OFFLINE No connection needed: on a plane, abroad without data, on the subway or at the cabin, everything works. The grids, the deals, the daily challenges and the hints all live on your device. A DAILY CHALLENGE FOR EVERY GAME Every day, a new challenge in every game, the same for everyone. Gentle on Monday, tough on Sunday. The home screen shows where you stand, game by game, and sharing your time takes one tap. HONEST LEVELS Every grid has exactly one solution, reached by logic alone: never a guess. It is rated by the hardest technique it truly needs, and the app names it. HINTS THAT HELP Stuck? The hint shows the square to play right away, and why. A techniques guide, with real grids, comes with every grid puzzle. • Unlimited undo, check when you like or as you play • Statistics for each game • iPhone and iPad • Your games synced through your own iCloud, on all your devices • VoiceOver and Dynamic Type • Thirteen languages The free version includes every game in full: every level, hints, and every daily challenge, free forever. It limits the number of free games each day, across all games. Casellina Pro removes the limit in every game, now and to come, with a single purchase, no subscription, shared with your family. It also adds detailed statistics and every colour theme. No account, no tracking.