Binairo vs Zebra

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)

Read a clue. Cross off what it rules out. Watch the consequences ripple until one arrangement survives. Zebra is a logic-grid game — the classic "the doctor lives in the red house" puzzle — built around a generator that proves every board before it reaches you. There is exactly one solution, it is always reachable by reasoning, and you are never asked to guess. TIERS THAT NAME THE TECHNIQUE Four difficulty tiers, each named after the reasoning it asks for rather than a vague star rating: cross off, chain, work out before-and-after, test a possibility. The generator computes the exact deduction depth each case requires, so the label is measured, not asserted. WHY YOU'LL STAY • A new case every day, the same one for everyone, generated offline • A streak to protect and a spoiler-free result to share • A free archive: replay any past case from its seed • Hints reveal the next real deduction and name the clue behind it WRITTEN, NOT MACHINE-TRANSLATED The clues ARE the puzzle, so they are composed natively in all five languages — English, German, Arabic, Persian and Kurdish (Sorani) — with proper right-to-left layout, localized numerals, and fonts that actually cover the Kurdish letters ڕ ڤ ڵ ۆ ێ ە. MADE TO BE COMFORTABLE • No timer, no lives, no energy meter • Never colour as the only signal • Fully offline. No account, no sign-up FREE, HONESTLY The daily, the archive, streaks and stats are free with light optional ads. Rewarded video is opt-in and only ever buys a hint. No banner ads on the board, ever. One purchase removes ads forever — no subscription.