Best Alternatives to Good Sudoku

Good Sudoku by Zach Gage redefined what a sudoku app could be, but it is not the right fit for every player. Maybe you have mastered the techniques it teaches and want structured practice or a way to test them. Maybe you want a daily puzzle and a league to climb. Maybe you prefer a free app or want something that works on the web. Whatever your reason, there are strong alternatives that pick up where Good Sudoku leaves off. We tested the best options and ranked them by what they do differently, and what they do better.

Good Sudoku Alternatives Compared

What Makes Good Sudoku Unique, and Why You Might Want Something Else

Good Sudoku's strength is its AI teaching system. Automatic pencil marks, technique-aware hints, and a beautiful interface make it the best app for learning how sudoku logic works. If you are a beginner or intermediate player trying to understand naked pairs, hidden singles, or X-Wings, Good Sudoku teaches those concepts better than any other app.

But there are real reasons players look for alternatives. Good Sudoku is solo-only: once you have learned the techniques, there is no way to test them against other humans. The automatic pencil marks, while helpful for learning, can remove a skill element that experienced players value. The one-time purchase price is fair but not free. And some players simply want more puzzle volume, a different aesthetic, or a competitive experience that Good Sudoku was never designed to provide.

1. Sudoku Royale: Best Free Alternative for Getting Better

Sudoku Royale is a calm, ad-free classic sudoku app, and it is the natural next step for players who have outgrown Good Sudoku's teaching environment. It teaches too, but differently: instead of explaining the board while you solve, it measures where you lose time and gives you practice on exactly that. The Classic levels run from Easy to Extreme, there is a Daily Challenge with streaks, and an 88-level Journey takes you from naked singles to XY-Wing one chapter at a time.

When you are stuck for 90 seconds, a light bulb appears. It highlights the next cell you can solve and names the technique that finds it, with a button to open the lesson, but you still place the digit yourself. Pencil marks are yours to enter in Notes mode, which keeps the scanning skill that Good Sudoku's automatic candidates can let slip. The slide-to-select input method replaces the two-step tap input that Good Sudoku uses: you press a cell and slide to the number in one continuous gesture, and you can still tap if you prefer.

When you want to test your skills against people, there are optional live matches on one shared grid: Duel against one opponent, a single-round Battle Royale, and a multi-round Tournament that knocks out the lowest scorers each round. You never have to play them. The entire app is free with no ads and no in-app purchases.

Why it works as a Good Sudoku alternative: Good Sudoku explains techniques. Sudoku Royale drills them until you spot them quickly on your own, then gives you a daily puzzle, a weekly belt league, and optional matches to put them to use.

What it does not have: Automatic pencil marks, camera puzzle import, or Good Sudoku's colorful, information-dense board. It is also iPhone only, like Good Sudoku.

2. Sudoku.com: Best for Puzzle Volume

If your issue with Good Sudoku is that you blow through puzzles too quickly and want a larger library, Sudoku.com delivers. It offers thousands of generated puzzles across easy, medium, hard, and expert difficulty levels. You will never run out of puzzles.

The app includes basic learning tools (optional hints, error highlighting, and manual pencil marks), but they are far less sophisticated than Good Sudoku's AI system. You will not get technique-specific hints that explain why a move works. The hints simply reveal a correct number.

The free tier includes ads between puzzles. A premium subscription removes ads and adds features like statistics tracking. The interface is polished and familiar, making the transition from Good Sudoku straightforward.

Why it works: Massive puzzle volume, broad difficulty range, and a familiar interface. Good for players who want to solve at their own pace without running out of content.

What it does not have: The AI teaching system, camera import, multiplayer, or the artistic design that makes Good Sudoku distinctive.

3. sudoku.coach: Best Free Learning Alternative

If Good Sudoku's teaching approach appeals to you but the price does not, sudoku.coach offers a free web-based alternative with a similar educational philosophy. The site generates puzzles and tags each one by the solving techniques it requires, from basic singles through advanced strategies like Swordfish and pointing pairs.

This technique tagging is unique and valuable. You can deliberately practice specific strategies by selecting puzzles that require them. The solving interface includes step-by-step explanations when you are stuck, similar in concept to Good Sudoku's hints but presented as text explanations rather than visual highlights.

The trade-off is clear: sudoku.coach is a web app, not a native iOS app. The interface is functional but lacks Good Sudoku's artistic design and smooth animations. There are no automatic pencil marks. But it is completely free, requires no account, and works on any device with a browser.

Why it works: Technique-focused learning similar to Good Sudoku, completely free, works on any device.

What it does not have: Native app experience, automatic pencil marks, camera import, or the polished design of Good Sudoku.

4. Brainium Sudoku: Best for Clean Solo Solving

Brainium Sudoku is for players who loved Good Sudoku's clean aesthetic but want a simpler experience without the AI teaching layer. The interface is minimalist and distraction-free. There are no technique hints, no automated systems: just you and the puzzle.

The app includes standard quality-of-life features: pencil marks, undo, and optional error highlighting. Statistics tracking shows your improvement over time. The puzzles span multiple difficulty levels and are consistently well-generated.

The free version has ads. A one-time purchase of approximately $2.99 removes them permanently, less than Good Sudoku's price and with no recurring costs.

Why it works: Clean, quiet, focused. If Good Sudoku felt too busy with its AI highlights and colorful overlays, Brainium strips the experience back to essentials.

What it does not have: Technique teaching, multiplayer, camera import, or any AI assistance.

5. NYT Sudoku: Best for Editorial Quality

The New York Times offers editorially curated sudoku puzzles with the same quality standards applied to their famous crossword. Each puzzle is reviewed by a human editor, and difficulty levels are calibrated to provide a consistent, satisfying solving experience. If puzzle curation matters to you more than features, NYT Sudoku delivers.

The daily puzzle format creates a ritual that many solvers enjoy: one puzzle per day, increasing in difficulty through the week. This structured approach is very different from Good Sudoku's learn-at-your-own-pace model.

The main downside is cost. A NYT Games subscription runs approximately $50 per year, making it the most expensive option on this list by a significant margin. There are no learning tools, no multiplayer, and no advanced input methods. You are paying for puzzle quality and the NYT brand.

Why it works: Editorial curation ensures consistently high puzzle quality. The daily ritual appeals to habit-oriented solvers.

What it does not have: AI teaching, multiplayer, unlimited puzzles, or a free tier beyond one puzzle per day.

Two Ways to Teach: Good Sudoku vs Sensei Royale and the Dojo

Good Sudoku and Sudoku Royale are the two apps on this list that try to make you a better solver, and they go about it in opposite ways.

Good Sudoku teaches in the moment. Its AI reads the board, highlights patterns you would otherwise miss, and its hints show you the technique that unlocks the next cell. Automatic pencil marks take away the bookkeeping so you can focus on logic. It is coached practice: the app acts as a teacher sitting next to you.

Sudoku Royale teaches from your own games. Sensei Royale, the built-in coach, looks at your recent games, works out which technique is costing you the most time, and gives you one assignment for it: learn it, spot it faster, or get it automatic. It only counts long pauses while an easier move was sitting on the board, and until you are solid on Full House, Naked Single, and Hidden Single, it only picks among those three. After a Practice, Daily, or Journey puzzle it can also replay your game and stop at the moments that mattered.

The reps happen in the Dojo. A drill skips the rest of the puzzle and shows you one board after another where a single technique is the next move, timed as a streak, so you stop knowing the rule and start seeing the pattern. The trade-off is simple. If you want to understand why a move works, Good Sudoku is wonderful. If you already know the rules and still miss the patterns on a live board, drills are the faster fix. Plenty of players learn a technique in Good Sudoku and then drill it in the Dojo.

Which Alternative Should You Choose?

The right Good Sudoku alternative depends on what you are looking for next:

• Ready to turn what you learned into speed? Sudoku Royale is a full ad-free sudoku app with a coach, technique drills, a Daily Challenge, and optional live matches. It is the logical next step after Good Sudoku's training mode.
• Want more puzzles to solve at your own pace? Sudoku.com provides near-infinite volume across all difficulty levels.
• Want free technique-focused learning? sudoku.coach offers a similar educational philosophy to Good Sudoku at zero cost.
• Want a simpler, cleaner experience? Brainium strips away the AI and focuses on pure puzzle solving.
• Want editorially curated daily puzzles? NYT Sudoku offers human-reviewed puzzles with consistent quality.

For players who have mastered Good Sudoku's techniques and want to keep improving without the assistance, Sudoku Royale is the clear choice. Moving from AI-assisted learning to spotting patterns on your own is the most rewarding progression path in sudoku. If you want to test yourself against people too, see our competitive sudoku guide and our roundup of the best sudoku apps in 2026.