Sudoku51
Herbert Caller Games iPhoneiPadiPod touch
Sudoku51 is a free Games app for iPhone and iPad by Herbert Caller. Requires iOS 17.6. Updated September 2, 2026.
- Price
- Free
- on the App Store
- Size
- 9 MB
- Age 4+
- Updated
- Sep 2
- 2026 · v1.5
Screenshots
About Sudoku51
This game brings to you the classical sudoku with a space theme and new variations of the game that will challenge your mind, concentration and endurance.
What’s new
Version 1.5 · Updated September 2, 2026
Support for new iOS releases.
App privacy
The developer, Herbert Caller, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to Sudoku51
Looking for apps like Sudoku51? Here are 6 similar apps on the App Store. The highest rated is Sudoku: Brain Puzzle Classics (5.0/5), and all 6 are free to download.
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Sudoku Saga: Classic
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Sudoku: Brain Puzzle Classics
5.0
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Sudoku Share
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Infinity Sudoku 9x9
5.0
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Rebound Invaders 2, Breakout
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Arachnoids Space Spider Attack
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Sudoku51 | – | Free | September 2, 2026 | |
| Sudoku Saga: Classic | – | Free | Jul 26, 2025 | Compare |
| Sudoku: Brain Puzzle Classics | 5.0 / 5 (1) | Free | Jan 6, 2025 | Compare |
| Sudoku Share | – | Free | Oct 1, 2026 | Compare |
| Infinity Sudoku 9x9 | 5.0 / 5 (2) | Free | Sep 22, 2026 | Compare |
| Rebound Invaders 2, Breakout | – | Free | Dec 21, 2025 | Compare |
| Arachnoids Space Spider Attack | – | Free | Dec 1, 2025 | Compare |
Compare Sudoku51 with the top alternatives: ratings, updates, ASO score and keyword gaps →