Expert Sudoku vs Backgammon NJ HD
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Expert Sudoku
This app offers a challenging Sudoku experience with 1000 handcrafted puzzles designed for advanced players. It features multiple skill levels, advanced solving techniques, and helpful options to aid your gameplay. Track your progress and challenge yourself with unique, solvable puzzles.
- 1000 unique handcrafted puzzles
- Advanced solving techniques
- Show incorrect answers
- Smart buttons and notes
- Multiple color schemes
- Challenge a friend
- Hints and progress statistics
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Join over 21,000,000 of our fans and download one of our Sudoku games today! Makers of the Best Sudoku Game of 2008, Sudoku (Free), we offer you the same great features with 1000 extremely difficult puzzles! Warning! Expert Sudoku is for serious Sudoku players. Our hand-crafted puzzles are solvable with only one solution and no guessing. Show your expertise using advanced solving techniques: Naked and Hidden Triples, X-Wing, XY-Wing, Swordfish, Forcing Chain, 2-string Kite, Skyscraper, Unique Corner, and more. OPTIONS All options are OFF by default, but you can turn them on in the Options menu • Show Incorrect :: Shows incorrect answers in red. • Smart Buttons :: Disables the number button when that number is completed on the game board. • Smart Notes :: Removes the number from the notes in the box, column, and row that contains the cell with your correct answer. FEATURES • 1000 unique handcrafted puzzles • Four different skill levels • ALL puzzles are solvable WITHOUT guessing • Multiple color schemes • Challenge a friend • "ALL notes": tap the "All notes" button on to show all the possible answers for each square. Tap the "All notes" button off to remove the notes. • Hints: shows the answer for the selected square or a random square when one is not selected • Pause the game at any time and resume where you left off • Best times, progress statistics, and much more Are you a Sudoku Master? Then play Expert Sudoku; you will love it! Otherwise, check out our other popular Sudoku games for iPhone and iPod Touch. Do you want more? Try one of our other versions of sudoku which have all the same great features! * Look for our paid edition of Sudoku with 1000 easier puzzles. * Or try Color Sudoku for a fun twist to solving sudoku puzzles.
Backgammon NJ HD
Play backgammon against a powerful AI, a friend on the same device, or players worldwide. Improve your skills with tutor mode and detailed analysis. Offers customizable options and supports all iOS devices.
- Neural network AI
- Online multiplayer (real-time & turn-based)
- 2-player mode on one device
- Tutor Mode & Hints
- Customizable board and checkers
- Match play and single games
- Game Center integration
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● GAME CENTER -- Play online, chat, invite friends, auto-match with random players { Real-time } Play online in real-time { Turn-based } Play online at your own pace ● VERSATILE -- Play offline vs. computer or against another person in 2-player mode ● CUSTOMIZABLE -- More options than any other backgammon app ● UNIVERSAL -- Supports iPad, iPhone, & iPod touch Play & learn backgammon at skill levels from beginner to world-class! Backgammon NJ HD is a full-featured game which uses an advanced, neural network-based, artificial intelligence. Play against a computer AI, another person in 2-player mode on one device, or online against friends & others. Using Tutor Mode & Hints, Backgammon NJ HD can show you how to improve your game. Discriminating players will appreciate how well the AI plays. It uses a neural network trained on millions of positions, a bearoff database, & a match equity table to achieve strong gameplay that will challenge even expert players. REVIEWS "[I] know strong bg play when I see it. This app is the strongest iPhone bg app I've played with by far. It does not cheat period. ...Analyzing these matches with eXtreme Gammon confirms a world class level of play with normal luck factors. If you are losing, get over it. So would 99.9% of the other backgammon players in the world. It is just that good. Learn from it." -Richard Munitz, Giant of Backgammon, #21 world ranking in 2009 "Backgammon NJ plays at an extremely high level with an excellent interface, and I often use it to practice on my iPhone when I am traveling. I recommend it highly to my students & friends." -Phil Simborg, Professional Backgammon Teacher & Player, www.mindgamescenter.com "I've played over 500 games now; I've checked about 5% of these against World Class Desktop programs (GNU, BGBlitz); and I've actually used some of the competition. NJ has the best interface & has more useful functions than any other backgammon apps out there." "For serious backgammon players, Backgammon NJ is the way to go." -Macworld.com, May 2012 IS THIS GAME RIGHT FOR YOU? This game is best for people: • Who recognize the strength of neural network backgammon bots • Who want to improve their game by playing against a world-class level AI • Who will use the in-depth, technical features included in the app to prove that it is honest (https://www.njsoftware.com/note.html) • Who won't expect to win consistently on the higher skill levels FEATURES • Neural network-based AI • 2 game types: Standard Backgammon or Nackgammon • 4 skill levels: Easy, Medium, Hard, Expert • Customizable board design & checker colors • Mersenne Twister algorithm for random number generation • Doubling cube • Single games or match play up to 25 pts • Crawford rule for match play • 1-player mode vs. computer • 2-player mode on one device • Game Center: Play real-time or turn-based online matches with friends & other players • Chat with your online opponent • Online Elo & Experience leaderboards • Block list for auto-match • Tap-to-move interface • Highlighted checker movement options • Hint & Undo • Learn with Tutor Mode • Game & dice stats, including Elo rating & ER • Match info: GnuBG ID, win chances, equity, top 10 moves, cube decisions • Email match files • Practice mode with unlimited undo (1-player vs. computer) • Manual match recording mode with unlimited undo & speed mode option • Options to reverse board direction, resign, use one-tap moves, auto bearoff, auto finish, use Jacoby rule, & much more • Match analysis (in-app purchase): Analyze past match files, view moves & errors for match, step through match, jump to position, play from position, save match files permanently IMPORTANT • If an online match ends for any reason, you'll receive the Elo pts you deserve. FAQ: https://gamecenter.njsoftware.com • Contact us for help: https://contact.njsoftware.com
Screenshots
Verdict
The clearest difference is in-app purchases: Expert Sudoku at none against Backgammon NJ HD's 3. Expert Sudoku also leads on review sentiment (86% vs 55%) and price ($2.99 vs $7.99). Backgammon NJ HD's advantage is ratings volume (3.7K vs 75) and chart position (#53 vs #199). On rating, update cadence, ads and device support 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
Expert Sudoku costs $2.99 and Backgammon NJ HD $7.99 up front. Backgammon NJ HD sells 3 one-off in-app purchases. Expert Sudoku asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.4 for Expert Sudoku against 4.5 for Backgammon NJ HD. That said, the two scores are not equally well evidenced: Backgammon NJ HD has 3.7K ratings behind it against 75, so its average is the more settled of the two. Written reviews are what separate them: 86% of Expert Sudoku's written reviews are positive against 55% of Backgammon NJ HD's.
Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 18, 2026 and October 21, 2026 respectively.
| Parameter | Expert Sudoku | Backgammon NJ HD |
|---|---|---|
| Price | $2.99 — better | $7.99 |
| Rating | 4.4 (75 ratings) | 4.5 (3.7K ratings) — better |
| Positive reviews | 85.7% of reviews — better | 55.4% of reviews |
| Number of ratings | 75 | 3.7K — better |
| Update frequency | Every 5 months | Every 5 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | #199 | #53 — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.4 |
| Further details — not scored | ||
| Size | 9 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Mighty Mighty Good Games | Jimmy Hu |
Customer experience
Expert Sudoku
Backgammon NJ HD
User reviews
Expert Sudoku
From 75 App Store ratingsWhat we love
- 🚀 Excellent game
- 👍 Great challenge
- 👍 Intuitive interface
- 👍 Visually appealing
- 👍 Keeps mind sharp
Room to improve
- 🐛 Occasional clock issues
- 🐛 Puzzles can be inconsistent in difficulty
- 🐛 No undo/cancel option
- 🐛 Repeated puzzles
- 🐛 Hint feature not very helpful
Backgammon NJ HD
From 3.7K App Store ratingsWhat we love
- 💻 Excellent backgammon app
- 🧠 Challenging AI opponent
- 🔍 Helpful analysis and stats
- 📚 Great for learning and improving
Room to improve
- 🎲 Questionable dice rolls and randomness
- 🤖 AI appears to cheat or have unfair advantage
- 🐛 Crashes and stability issues
- 💰 Paid app with in-app purchases
Bugs and requests
Expert Sudoku
Reported bugs
2 issues- Incompatibility issues with iOS updates
- Incorrect answers sometimes marked as correct
Requested features
3 requests- Ability to color cells or notes
- Progress tracking and puzzle history
- More frequent updates with new puzzles
Backgammon NJ HD
Reported bugs
3 issues- Frequent crashes
- Unreliable online play and matchmaking
- Issues with syncing progress across devices
Requested features
4 requests- Manual dice rolling option
- Ability to undo moves
- Improved online/multiplayer experience
- More difficulty levels
In-app purchases
Expert Sudoku
No in-app purchases
Backgammon NJ HD
- Analysis Package$2.99
- Online VIP$2.99
- Power User$4.99
Questions
Is Expert Sudoku free?
Is Backgammon NJ HD free?
Which has better reviews, Expert Sudoku or Backgammon NJ HD?
Do Expert Sudoku or Backgammon NJ HD have ads?
Which is updated more often, Expert Sudoku or Backgammon NJ HD?
Which is more popular, Expert Sudoku or Backgammon NJ HD?
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