Sudoku Ignite

Sudoku Ignite is sudoku with room to grow. Start with a relaxed 9×9, then push into puzzles you won't find in most apps: irregular Jigsaw grids, 16×16, and enormous 25×25 Mega boards. Five difficulty tiers — Easy to Guru — mean there's always a next step. Every puzzle is graded by the logic it takes to solve, so difficulty actually means something. Stuck? The built-in guide finds a certain next move and shows you why it works — so you finish with the technique, not just the answer. Come back every day for the Daily Challenge — one fresh Classic or Jigsaw puzzle — and build a streak. Your statistics track best and average times per grid and difficulty, mistake-free "perfect" solves, and a calendar of your daily wins. FEATURES • Classic sudoku: 9×9, 16×16 (hex), and 25×25 (letters) • Jigsaw sudoku with irregular regions • Five graded difficulties: Easy, Medium, Hard, Expert, Guru • Daily Challenge with streaks and a completion calendar • Detailed statistics: best/average times and perfect solves • Teaching hints that explain the logic • Pencil marks with optional auto-candidates • Unlimited undo/redo and an erase tool • Smart highlighting for rows, columns, regions, and matching numbers • Optional guided input, mistake checking, and a mistake limit • Pinch to zoom and pan on the large grids • Light, dark, and high-contrast themes • Haptic feedback and sound effects PLAYS THE WAY YOU WANT Prefer a strict challenge or a gentle assist? Toggle guided input, mistake-checking, auto-notes, the timer, and more in Settings. Light up your logic. Download Sudoku Ignite and start your streak.