Sudoku ++ vs Killer Sudoku

Train your logic with a polished classic Sudoku app built for comfortable mobile play. Sudoku++ gives you a clean 9x9 puzzle board, fast pencil marks, clear highlighting, useful hints, lessons, and stats in one focused number puzzle experience. Start an easy puzzle for a quick break or step up to harder challenges when you want deeper logic. Why players like it: • Classic 9x9 Sudoku with multiple difficulty levels • Fast notes and pencil marks for serious solving • Highlighting for rows, columns, boxes, and matching numbers • Undo, redo, erase, pause, timer, and resume • Helpful hint system and mistake checking options • Learn tab with short lessons for rules and solving patterns • Statistics to track progress and best times • Light, dark, system, and extra board themes • Save unfinished games automatically Free play includes classic puzzles, notes, undo, timer, basic stats, and limited hints. Pro is a one-time upgrade for unlimited puzzles, advanced difficulty, deeper assistance, auto notes, full statistics, and extra customization. Whether you call it Sudoku, number place, or a daily brain puzzle, Sudoku++ is designed to feel calm, readable, and satisfying every time you open the board.

Killer Sudoku: Quick Notes gets you to the logic faster. Fill every valid candidate in one tap without revealing the solution, then solve calm, adaptive Killer Sudoku grids at your pace. SOLVE AT YOUR PACE Choose from four difficulty levels, from a gentle introduction to a true Expert challenge. Difficulty adapts as you complete puzzles. ALL CANDIDATES IN ONE TAP Automatically add every valid candidate as a note. The app never reveals the answer — it simply removes the routine setup so you can focus on logic. QUICK INPUT Select a digit first, then place it across the grid with fast, precise taps. Quick input and note mode can be used together. EXPLORE DIFFERENT MOVES Save the exact board state as a Branch, try an idea, and return to it whenever you want. CHALLENGE FRIENDS Share a spoiler-free code and let a friend solve the exact same difficulty, cages, and starting grid. No answers are included. SHARE YOUR RESULT Create a polished result card with your time, mistakes, hints, streak, and challenge code using the iOS system share sheet. BUILT FOR FOCUS A calm, modern interface, clear cage sums, candidate highlighting, undo and redo, hints, statistics, themes, and automatic progress saving. Killer Sudoku: Quick Notes works offline and does not collect personal data.