Tired of pop-up ads ruining your sudoku flow? We’ve curated the 10 best ad-free sudoku apps for Android, iOS, and desktop—no subscriptions, no distractions. Whether you're solving solo or using a smart board in class, these clean, fast, and offline-friendly apps deliver the focused brain workout you’re looking for.
Ever open a sudoku app to relax, only to get smacked in the face with ads after every puzzle? Yeah... same here. You finish one board, and before you can blink, there’s a loud ad trying to sell you another mobile game or some weird product you’ll never buy.
I just want a clean game. Quiet. Focused. A little mental workout without distractions.
If you feel the same way, you’re going to love this list. I went on a deep dive to find the best sudoku apps with no ads—ones that work offline, don’t push subscriptions, and let you focus on what matters: solving puzzles.
Whether you’re playing on your phone, tablet, or a 75 smart board in a classroom or office, these picks are perfect for uninterrupted brain training.
🔢 Top 10 Ad-Free Sudoku Apps (Quick Comparison Table)
| App Name | Platforms | Offline Mode | Price | Key Features | Overall Rating (★/5) |
|---|---|---|---|---|---|
| Sudoku.com (Premium) | Android, iOS | Yes | Paid | Clean UI + Daily puzzles | ★★★★★ |
| Andoku Sudoku 3 | Android | Yes | Free | Tons of puzzles + offline | ★★★★★ |
| Good Sudoku by Zach Gage | iOS | Yes | Paid | Modern assistive play | ★★★★☆ |
| Open Sudoku | Android | Yes | Free | Open-source + simple | ★★★★☆ |
| Brainium Sudoku (Premium) | Android, iOS | Yes | Paid | Soothing interface | ★★★★☆ |
| Enjoy Sudoku | Android | Yes | Free | Puzzles + stats | ★★★★☆ |
| Sudoku - Offline Puzzle by Guru | Android | Yes | Free | Fully offline | ★★★★☆ |
| Sudoku by Fassor | Android | Yes | Free | No ads, classic feel | ★★★★☆ |
| Sudoku Puzzle World | Web | Yes | Free | Great for smart boards | ★★★★☆ |
| Sudoku Classic by Pink Pointer | Android | Yes | Free | Super clean UI | ★★★★☆ |
1. Sudoku.com (Premium Version) – Polished, Popular & Peaceful
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If you’ve searched for sudoku apps before, you’ve probably run into this one. The free version does have ads—but their premium upgrade removes all of them and gives you a buttery-smooth experience.
What I love:
- Daily puzzles, seasonal challenges
- Clean interface with notes, hints, and eraser
- Works offline
- Great on Android and iOS
LSI Keywords: sudoku classic android, ad-free number puzzle app, brain training mobile game
💡 Bonus Tip: Use it on a whiteboard touch screen for group play or in a classroom setting—it’s fun watching a group collaborate on hard puzzles.
2. Andoku Sudoku 3 – Open Format, Tons of Features
Keyword Focus: app sudoku android, best free sudoku app without ads android
No ads. Tons of features. Hundreds of puzzles. This one is a hidden gem on the Play Store.
Why it stands out:
- Multiple sudoku variations (X-Sudoku, Hyper, Percent, etc.)
- Completely offline
- No ads or weird permissions
- Highly customizable
LSI Keywords: android sudoku game offline, customizable sudoku app, sudoku challenge
This is one of the best free sudoku apps without ads for Android, hands down.
3. Good Sudoku by Zach Gage – A New Way to Play
Keyword Focus: sudoku app no ads
If you like apps that rethink how games should work, you’ll dig this one. It’s designed to teach you how to get better at sudoku, not just solve the puzzles.
Highlights:
- Built-in tutorials and logic assists
- Slick design
- No ads with one-time purchase
LSI Keywords: sudoku learning app, ios sudoku with no ads, smart sudoku solver
🧩 Ideal for classrooms—especially when displayed on a webcam whiteboard for interactive group-solving.
4. Open Sudoku – Lightweight and Straightforward
Keyword Focus: app sudoku android, sudoku with no ads
This one is perfect if you just want a no-frills, clean sudoku experience with zero distractions.
Why I love it:
- Free and open-source
- Classic sudoku style
- Works 100% offline
- No ads at all
LSI Keywords: offline sudoku app, minimal sudoku, ad-free number game
💡 Developers or tinkerers can even add their own puzzles to this app—it’s open-source!
5. Brainium Sudoku (Premium) – Relaxing & Refined
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Brainium makes beautiful, minimalist mobile games. Their sudoku version is no different—and the premium version gives you a completely ad-free environment.
Key Features:
- Relaxing visuals and sounds
- Smart hint system
- Themes and customizations
- Tracks your stats
LSI Keywords: calming sudoku, brain training app, distraction-free games android
Use this one with a whiteboard canvas to turn sudoku into a stress-relieving group activity.
6. Enjoy Sudoku – Great for Competitive Play
Keyword Focus: sudoku app no ads, best sudoku app android
This Android app has been around forever—and it’s aged well. Simple UI, classic look, no ads, and tons of puzzles to burn through.
Why it’s awesome:
- Detailed stats and rankings
- Multiple difficulty levels
- Supports hints and pencil marks
LSI Keywords: sudoku strategy game, competitive sudoku app, android puzzle app free
Perfect for friendly matches or tournaments on larger screens.
7. Sudoku – Offline Puzzle by Guru – Works Without Wi-Fi
Keyword Focus: best free sudoku app without ads android
If you travel a lot or just prefer offline play, this is one of the top picks. It’s 100% free and has no internet dependency.
Standout Features:
- Fully offline
- Daily challenges
- Clean interface
- Totally ad-free
LSI Keywords: mobile sudoku no internet, free offline puzzle games, android sudoku free
🚌 Great for commuters or school use when Wi-Fi isn’t an option.
8. Sudoku by Fassor – No Ads, No Nonsense
Keyword Focus: sudoku app no ads
Another no-ad classic that feels like pen-and-paper sudoku. It’s lightweight, fast, and free.
What I like:
- No permissions needed
- Pure sudoku experience
- Works smoothly on older phones too
LSI Keywords: classic sudoku android, easy sudoku game, ad-free simple app
Pairs nicely with a NearHub smart board for classroom brain warm-ups or meetings.
9. Sudoku Puzzle World (Web) – Browser-Based Brilliance
Keyword Focus: sudoku with no ads, play sudoku on smart board
If you’re more into desktop or smart board play, this is a solid browser-based app. Zero ads, no account needed.
Benefits:
- Runs on any browser
- Print puzzles or play online
- Different grid sizes available
LSI Keywords: web sudoku game, printable sudoku, large screen puzzle app
🔍 Try launching it on a whiteboard canvas in schools for a fun group challenge.
10. Sudoku Classic by Pink Pointer – Clean, Crisp, and Free
Keyword Focus: best sudoku app android, sudoku app no ads
This app is all about simplicity and speed. If you like solving puzzles without fluff, give this one a shot.
Why it’s great:
- Auto-save
- Simple color scheme
- Light on storage
- Zero ads, forever
LSI Keywords: ad-free sudoku, easy mobile sudoku, classic puzzle app
Perfect for students and older players who want an intuitive design.
🧠 Why You Should Use a Sudoku App With No Ads
If you’re like me, you use sudoku as a way to unplug. The last thing you need is:
- Random video ads
- Interruptions mid-game
- Slowdowns or crashes
With these ad-free sudoku apps, you:
- Stay focused
- Play offline
- Boost your brain with zero distractions
Bonus: They’re great for using on smart boards or interactive whiteboards in group settings like classrooms or office break rooms.
👩🏫 How to Use Sudoku Apps in Classrooms or Offices
Sudoku isn’t just a solo hobby—it’s a smart way to:
- Encourage logical thinking
- Boost mental focus
- Create a fun, low-pressure activity
Try combining any of these apps with a whiteboard touch screen or a webcam whiteboard. Whether it's students solving puzzles together or coworkers taking a break, it’s a simple way to spark group thinking and collaboration.
❓ FAQs: Best Free Sudoku Apps Without Ads (Android & iOS)
Q: Are all these sudoku apps really ad-free?
A: Yes. Some are free from the start, and a few offer a premium version to remove ads permanently.
Q: Do these work offline?
A: Absolutely. Most of them are designed to be completely functional without Wi-Fi.
Q: What’s the best sudoku app for Android?
A: Try Andoku Sudoku 3 or Sudoku by Fassor—both are free, offline, and totally ad-free.
Q: Are any of these apps open-source or customizable?
A: Yes, Open Sudoku is open-source and allows puzzle imports.
Q: Can I use these apps in classrooms or team-building settings?
A: Definitely! Pair with a NearHub smart board or whiteboard canvas for collaborative puzzle-solving.
🧩 Final Thoughts
There’s something so satisfying about sudoku—the quiet focus, the “aha!” moments, the little win when the last square clicks into place.
But ads? Not so satisfying.
I’ve tested dozens of sudoku apps to bring you this no-nonsense list of the best free sudoku apps without ads for Android and iOS. Whether you're playing on the couch or projecting onto a smart board, these apps deliver what you came for: a peaceful, fun, brain-boosting experience.
Know another great one I missed? Shoot it my way—I’m always down for more ad-free zen.
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