Prisma: Sudoku Number Puzzle
Offline puzzles, no ads!
Only for iPhone
Free · In‑App Purchases
iPhone
Sudoku the way it should feel: calm, beautiful, no ads and no subscriptions. Now with Diagonal and Killer modes.
Prisma is Sudoku the way it should feel: calm, clear and beautiful.
Every puzzle you solve charges a glowing light artifact. Piece by piece it grows into your very own constellation - a visible record of every solved puzzle. No point hoarding, no energy limits, no pop-ups. Just you, the puzzle and a little more light after every win.
NO ADS, NO BARRIERS
No ads. No subscriptions. No accounts. No hidden barriers. There is a voluntary tip jar - leave a light if you like. But tips never unlock content or features: everything in the game is open to everyone from the start.
THREE WAYS TO PLAY
• Classic - the Sudoku you know and love
• Diagonal (X-Sudoku) - both diagonals also carry the numbers 1 to 9
• Killer - cages with sums instead of starting numbers, for those who want more of a challenge
Each mode in five difficulty levels from Easy to Diabolical.
DESIGN THAT BRINGS CALM
A board like glass: soft "liquid glass" surfaces, warm light, subtle haptics and gentle tones. Light and dark mode included. Built for iOS - with real materials, smooth animations and motion parallax in the constellation.
THOUGHTFUL SUDOKU
• Daily puzzle with streak counter - a new, fair puzzle every day
• Notes, hints, unlimited undo
• Highlighting of matching numbers and automatic cleanup of notes
• Unique solutions - every puzzle is cleanly solvable
• "Continue playing": your current game is always right where you left it
COLLECT INSTEAD OF GRIND
36 artifacts wait to be charged - prisms, orbs and light cores in warm and cool tones. All purely cosmetic and reachable by everyone - nothing needs to be unlocked. In the gallery you see your progress; in the stats your best times, daily streaks and 12 achievements.
OFFLINE & PRIVATE
Prisma runs completely offline. There are no user accounts and no tracking. Your saves stay on your device.
Enjoy solving. May your constellations shine bright.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fix: In rare cases the app could crash when placing the final number of a puzzle. This is now fixed. Thanks for your feedback!
The developer, Yves Kopmann, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yves Kopmann
- Size
- 3.9 MB
- Category
- Puzzle
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later.
- iPhone
- Languages
English and 5 more
- English, Dutch, French, German, Japanese, Swedish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Leuchtfeuer $3.99
- Strahlen $2.99
- Glimmen $1.99
- Funke $0.99
- Copyright
- © 2026 Yves Kopmann