Classic Sudoku Master! vs DualGrid
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Classic Sudoku Master!
Challenge your mind with a clean and focused number puzzle game. Offers infinite puzzles with five difficulty levels, smart hints, and a notes mode. Track your progress and play offline anytime.
- Infinite, uniquely generated puzzles
- 5 difficulty levels
- Smart hint system
- Notes mode for candidate numbers
- Unlimited undo/redo
- Offline play
- Dark theme
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CLASSIC SUDOKU MASTER - A Classic Number Puzzle Game Challenge your mind with Sudoku Master, a clean and focused Sudoku puzzle game for iPhone and iPad. Whether you're a complete beginner or a seasoned expert, Sudoku Master has the perfect puzzle waiting for you. ---------------------------- WHY SUDOKU MASTER? ---------------------------- Sudoku is a classic number puzzle game that helps sharpen focus, improve memory, and relax the mind. Sudoku Master delivers a clean, distraction-free Sudoku experience on mobile - no clutter, just pure puzzle-solving pleasure. ---------------------------- KEY FEATURES ---------------------------- INFINITE PUZZLES Never run out of challenges! Every puzzle is uniquely generated with a guaranteed single solution. Play a new puzzle every time. 5 DIFFICULTY LEVELS - Easy (40 clues) - Perfect for beginners and casual players - Medium (32 clues) - Requires planning and logic - Hard (26 clues) - Advanced techniques needed - Expert (22 clues) - Designed for experienced puzzle solvers - Evil (17 clues) - Only the fearless survive SMART HINTS Stuck on a cell? Use a hint to reveal one answer without spoiling the whole puzzle. Hints are limited per difficulty to keep it challenging and rewarding. NOTES MODE Toggle pencil marks to write candidate numbers in any cell - just like solving on paper but cleaner and faster. UNLIMITED UNDO AND REDO Made a mistake? Undo any move instantly. No penalty, no stress. Experiment freely and redo moves you want back. TIMER AND PERSONAL STATS Track your solving time, best times per difficulty, total wins, win rate, and current streak. Watch yourself improve with every puzzle you solve. AUTO-SAVE Never lose your progress. Your game is saved automatically - just tap Continue to pick up exactly where you left off. BEAUTIFUL DARK THEME A stunning dark UI with vibrant blue highlights is easy on the eyes day or night. Designed for long, comfortable playing sessions. PLAY OFFLINE No internet required. All puzzles are generated on your device so you can play anywhere - on a plane, subway, or in the mountains. ---------------------------- BENEFITS OF SUDOKU ---------------------------- Playing Sudoku regularly is known to help with: - Logical thinking and problem-solving skills - Memory and concentration - Stress relief and mental relaxation - Keeping your mind active and engaged - A satisfying mental workout anytime ---------------------------- HOW TO PLAY ---------------------------- The rules are simple: 1. Fill every row with the numbers 1 through 9 2. Fill every column with the numbers 1 through 9 3. Fill every 3x3 box with the numbers 1 through 9 4. No number can repeat in any row, column, or box Tap a cell, tap a number, solve the grid. That is it! Use Notes mode for harder puzzles to track possibilities. ---------------------------- DESIGNED FOR iPHONE AND iPAD ---------------------------- Sudoku Master is built natively for iOS with smooth animations, haptic feedback, and a responsive layout that looks stunning on every iPhone and iPad - from the smallest SE to the largest iPad Pro. ---------------------------- DOWNLOAD AND PLAY ---------------------------- No account required. No subscription. Just install and start solving. Download Classic Sudoku Master now and enjoy the puzzle-solving experience! ---------------------------- SUPPORT AND FEEDBACK ---------------------------- We read every review and reply to every support email. Your feedback makes Classic Sudoku Master better for everyone. Email: sky.techno.biz@gmail.com
DualGrid
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DualGrid is a puzzle game where you solve the same board using two different sets of rules. In COLOR MODE, clear groups of two or more adjacent tiles of the same color. Tiles fall after each move, and new tiles refill the board. In PIPE MODE, follow connected pipes and guide the character from the start to the goal. Switch between the two modes to reshape the board and open a path forward. As you progress, new mechanics appear, including rotating tiles, wild colors, one-way valves, frozen tiles, garbage tiles, and checkpoints. With intuitive touch controls, DualGrid is easy to enjoy in a quick session or as a deeper puzzle challenge.
Screenshots
Verdict
The clearest difference is in-app purchases: DualGrid at none against Classic Sudoku Master!'s 1. Classic Sudoku Master!'s advantage is update cadence (daily vs every 10 days). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Classic Sudoku Master! sells 1 one-off in-app purchase. DualGrid asks for nothing beyond the download.
Classic Sudoku Master! ships an update daily, DualGrid every 10 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | Classic Sudoku Master! | DualGrid |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Daily — better | Every 10 days |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | Ravindra Joshi | KENTO ADACHI |
In-app purchases
Classic Sudoku Master!
- Sudoku Master Premium$4.99
DualGrid
No in-app purchases
Questions
Is Classic Sudoku Master! free?
Is DualGrid free?
Do Classic Sudoku Master! or DualGrid have ads?
Which is updated more often, Classic Sudoku Master! or DualGrid?
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