Stelline: Star Logic Puzzles

Stelline is a calm Star Battle-style logic game for people who solve by reasoning, not by trial and error. Every board is generated on your iPhone or iPad, verified to have exactly one solution, and graded by the same deduction engine that powers its hints. No ads, no account, and nothing ever leaves your phone. THE RULES Place one queen in every row, every column and every coloured region, and never let two queens touch, not even at a corner. When that feels easy, switch to 2-star mode: two stars in every row, column and region on boards up to 11×11, still never touching. BOARDS WITHOUT END, EACH ONE PROVEN - Built on your device: nothing to download, no pack to run out of. - Every board is checked by an exact solver before you see it: exactly one solution, always. - 1-queen boards from 6×6 to 11×11, up to 12×12 on iPad; 2-star boards from 9×9 to 11×11. - Compete: Today's board for everyone, Daily Rush, daily leaderboards, an archive of past boards. FREE TO START, ONE PURCHASE TO OPEN EVERYTHING - Free for good: Today's board in both modes, Daily Rush, Learn, a Starter set of 24 boards and two new generated boards a day. - Stelline Unlimited, the one purchase: the generator without limit, every size, mode and difficulty, plus Stats and history. - No subscription, no ads, Family Sharing. Bought Stelline before it went free? Everything stays yours. TACTICS: THREE MINUTES, ONE TAP PER BOARD - Every position is a board part-way through a solve. Tap the cell where a queen can be proven right now. - A wrong tap costs a life and shows the answer with the idea behind it, named and explained. DIFFICULTY GRADED BY DEDUCTION - A deduction engine with seventeen techniques solves each board the way a person would, from neighbour dots and line locks to counting arguments, X-wings and fish. - Easy, Medium and Hard boards need direct deductions only, in both modes. - Expert is labelled honestly: it needs what-if reasoning. HINTS THAT TEACH - Hint first counts misplaced queens and dots without saying where they are: zero and zero means your reasoning holds. - Show me where walks you through one logical step at a time: the row, column or region behind the next deduction, then the cells, then the technique explained in a line, applied only when you tap Do it. LEARN BY PLAYING - First steps teaches the rules and the controls on a real board, with you making every move. A second lesson introduces 2-star mode. - Techniques and Advanced: one lesson per idea of the solver, from last cells to X-wings, squeezes, fish and the what-if step, explained on a real position, then practised on fresh positions keyed on that idea. CONTROLS BUILT FOR CLEAN SOLVING - Tap a cell to cycle it: empty, dot, queen or star. - Auto-check stripes queens or stars that touch or exceed a row, column or region. Turn it off for a purist solve. - What-if marks: open a branch, try a queen, follow the dots it forces; keep what held or drop every tentative mark in one tap. - Undo, redo and clear. Your game saves itself after every move: leave, come back, tap Continue. MADE FOR EVERY PLAYER - An original pastel palette, or the Classic black-and-white look with heavy region borders. - Colour-blind mode: high-contrast colours, a distinct fill pattern for every region and thicker borders. - On iPad: the board beside its controls in landscape, keyboard and pointer support, Apple Pencil hover. - Full VoiceOver support, with hints read aloud; Dynamic Type and Reduce Motion respected throughout. Haptics you can switch off. PRIVATE BY DESIGN Stelline has no account, no ads and no analytics. Your boards, settings and progress stay on your phone; nothing is collected. Purchases go through the App Store; the only online feature is the optional Game Center leaderboard, run by Apple and off by default. Stelline (little stars) is written from scratch in Swift, with its own generator, solver and deduction engine: a small app that does one thing carefully, a fair puzzle, every time.