Games · Puzzle · iPhone · iOS 17+
Sudoku XL
Pure sudoku, beautifully made.
A clean, fast sudoku experience with hand-tuned difficulty levels, smart hints that teach you techniques, and detailed statistics.
About
What is Sudoku XL?
Sudoku XL strips sudoku back to what makes it great: a beautiful board, fair puzzles and zero clutter. Every level is curated and ordered by difficulty, so progress always feels earned — never random.
The smart hint engine does more than fill in a square. It shows you which technique applies — naked singles, hidden pairs and beyond — so every hint makes you a better solver.
Your games save automatically, statistics track your solve times and accuracy per difficulty, and everything works offline. No account, no noise — just sudoku.
A closer look
Inside the app
Key features
Built around what matters
Curated levels
Hand-tuned puzzles across multiple difficulties, ordered so each level feels like fair progress.
Hints that teach
The hint engine names the technique — naked single, hidden pair and more — so you learn while you solve.
Detailed statistics
Solve times, accuracy and progress per difficulty, tracked automatically.
Auto-save
Leave any time. Your game is exactly where you left it, even after a restart.
Clean, focused design
A distraction-free board with pencil marks, error checking and comfortable one-handed play.
Offline & private
No account, no tracking, no internet needed. Just you and the puzzle.
Who it’s for
Made for people like you
- Daily sudoku players who want a clean, fast app without clutter
- Beginners who want hints that actually explain the logic
- Experienced solvers chasing faster times across difficulties
- Anyone who prefers puzzles without ads interrupting their flow
Sudoku XL is almost here
Currently in final testing. Want to know the moment it launches? Drop us a line.
Privacy
How Sudoku XL treats your data
No data collected. No account, no analytics — progress and statistics stay on your device.
Data collection
Sudoku XL collects no personal data. Your progress, saved games and statistics are stored only on your device.
Advertising
Sudoku XL contains no third-party advertising networks.
Analytics
No analytics or tracking SDKs are included.
Accounts
No account or sign-up is required.
Storage
All data is stored locally on your iPhone. Deleting the app deletes your data.
Privacy questions
Email support@amsterdamfuturelabs.com — or read the full privacy policy for Sudoku XL.
FAQ
Frequently asked questions
Is Sudoku XL free?
Yes, Sudoku XL is free to play. Optional hint credits are available if you want extra help on tough puzzles.
Does the app work offline?
Yes — completely. All levels, hints and statistics work without an internet connection.
Is my data stored or shared?
Your progress and statistics are stored on your device only. Nothing is collected or shared.
Are there ads?
No third-party ad networks are included in Sudoku XL.
Do I need an account?
No. Open the app and start solving.
Which devices are supported?
Sudoku XL is designed for iPhone and requires iOS 17 or later.
How do hints work?
Each hint highlights a real solving technique and explains why it applies, so you improve with every hint you use.
How do I get support?
Email support@amsterdamfuturelabs.com — we aim to reply within two business days.
Support
Need a hand with Sudoku XL?
Questions, bug reports, feature ideas — we read everything and aim to reply within two business days.