Quiet Lights vs LineaLogic

Quiet Lights is a calm logic puzzle. Light up every room. Place lamps on the grid and each one shines down its row and column until a wall blocks it. The board is solved when every white square is lit — with no lamp shining on another, and every numbered wall surrounded by exactly that many lamps. There is always one logical solution, and you never have to guess. Tap a square to place a lamp, tap again to mark a square you know stays dark, and follow the deductions until the whole grid glows. Four board sizes, from a compact 6×6 to a roomy 9×9. Four difficulty levels — Easy, Medium, Hard, and Expert — chosen independently of size, so you can take an easy 9×9 to unwind or a hard 6×6 to be tested. Play the Daily puzzle — one shared board each day, the same for everyone — or roll unlimited boards in Practice. Fifteen languages. Five themes — Light, Dark, Paper, Dusk, and a colour-blind-friendly Accessible palette with clear marks, so the grid stays readable for every kind of vision. Soft ambient music and gentle haptics, each with a one-tap mute right on the Home screen — no settings dive needed. An optional daily reminder nudges you back at the time you choose. No ads. No tracking. No accounts. Your progress and stats live on this device only.

A real logic game. Not another app stuffed with ads. Not a subscription that costs you more every month. Just an elegant puzzle where every challenge is solved by reasoning. That's LineaLogic. ■ THE CONCEPT Every puzzle gives you a clue. Your job: pick the right sticks — each one has a color and a size — to satisfy every constraint at the same time. The twist? Constraints overlap. A large red stick counts as both "1 large" AND "1 red". Read carefully, reason it out, choose right. Easy to learn. Demanding to master. ■ WHAT YOU GET → 7 progressive difficulty levels, 70+ deduction puzzles. → Level 1 is completely free — try before you buy. → Zero ads. Ever. Anywhere. → Zero subscriptions. One single lifetime purchase unlocks everything. → No timer, no lives, no game over. Take your time to think. ■ WHY LINEALOGIC IS DIFFERENT Most logic games drown you in ads or charge you every month. LineaLogic respects your time and your money: • Clean, premium design — crisp typography, bold colors, zero distractions. Pure thinking. • A unique mechanic — reading clues and overlapping constraints, not a simple "count the objects". • Clear feedback — a wrong answer tells you why, and you fix it. You learn as you play. • Works offline — on the subway, on a plane, anywhere. • No account required — play immediately. ■ WHO IS THIS FOR? • You love Sudoku and deduction riddles • You want a calm game to give your brain a workout • You want a smart puzzle to share with the family (ages 6+) • You appreciate premium apps with no ads and no subscriptions ■ THE LINEALOGIC FAMILY LineaLogic is the sister app of KubiLogic: same standards, same polished design, same promise — no ads, no subscriptions, one lifetime purchase. If you loved one, you'll love the other. ■ THE MATH IS SIMPLE Dozens of puzzles, hours of thinking, a single payment. Compare that to any $9.99/month subscription. Download LineaLogic. Start with the free level. And when you're hooked, unlock everything. Your brain deserves better than an ad every 30 seconds.