Sudoktor vs Nonova

Sudoktor is a Sudoku solving assistant. It helps you to solve and understand Sudoku puzzles but it can also be used to create and solve unlimited Sudoku puzzles. See the support page for more details and screenshots. App's key features: - generates valid 9x9 sudoku puzzles of any choosen level (from easy to fiendish) - allows to rate objectively the difficulty of the current puzzle - allows to enter to enter standard 9x9 Sudokus manually or by copy-and-paste - offers an intuitive and quick entry method - shows or hides pencil marks, updates them automatically - full Undo/Redo feature - offers advanced analysis on demand: - candidates - wrong values - solution - subsets, grid analysis, forcing chains, almost locked subsets... - ability to save and to reopen the games

Fill the right squares by following the numbers on every row and column, and watch a hidden pixel-art picture appear. Nonova is pure logic — no timer rushing you, no luck involved. Every endless puzzle is generated on the spot and verified to have one single solution you can always reach by reasoning, so you never have to guess. If you love nonograms, picross, griddlers or Japanese crosswords on paper, this is the same calm, satisfying deduction on your phone: clean, quiet and made for players who want to think, not tap frantically. HOW IT WORKS - The numbers next to each row and column tell you the lengths of the consecutive filled blocks. - Fill the squares that must be shaded and mark the empty ones with an X to keep track. - Drag to paint a whole line at once — the axis locks like classic Picross, so a single stroke stays perfectly straight and mistakes are easy to avoid. WHAT YOU GET - Endless puzzles in four sizes: 5x5 to learn the ropes, 10x10 and 15x15 for a proper session, and 20x20 for experts, with smooth pinch-zoom and pan on the bigger boards. - A guaranteed unique solution on every single board, provable by logic alone — our generator checks each puzzle with a line solver before you ever see it, so there is no lucky guessing, ever. - Assisted mode that flags a wrong fill as a mistake and automatically dims the clues you have already completed, so you always know exactly where you stand. - Expert mode with no live checking and a manual Check button, for players who want the real pen-and-paper feeling — and it pays double the coins. - A Daily Puzzle with a streak counter and a full month calendar, so there is always one fresh, shared challenge to come back to every day. - Themed pixel-art packs — animals, food, Spain and space — where each finished grid reveals a colourful picture you can save and share with friends. - Smart hints when you get stuck, coins to spend on them or unlock new packs, and detailed statistics with your best times and solve counts for every size. PERFECT FOR - Fans of picture cross, hanjie and griddlers looking for an endless supply of hand-crafted-quality puzzles. - Commuters and travellers who want a smart offline game that needs no internet connection at all. - Anyone winding down before bed who prefers a slow, thoughtful brain teaser over a loud, flashy arcade game. - Logic lovers who already solved every nonogram in the newspaper and want an infinite, always-fair supply. CALM, PRIVATE AND OFFLINE - No account and no sign-up — just open the app and start playing in seconds. - Works completely offline; your progress, streak and statistics live only on your own device. - No aggressive full-screen ads between every move; the whole experience stays clean, quiet and focused on the puzzle. Whether you have two minutes for a quick 5x5 or a full hour for a meaty 20x20, Nonova gives you a bottomless well of logic puzzles that always play fair. Download Nonova and rediscover the quiet joy of solving a nonogram by pure reasoning — one careful deduction at a time.