Support
Start a new puzzle
Choose Easy, Medium, Hard, Expert or Master. Every generated puzzle is verified to have a unique solution.
Continue a game
Your current puzzle is saved automatically and can be resumed from the home screen.
Daily Challenge
A new Daily Challenge is available every day.
Pencil notes
Use Notes mode to enter candidate numbers without committing to a final answer.
Smart hints
Hints guide you toward the next logical step and can reveal a correct value when necessary.
Music, sound & haptics
Music, sound effects and haptic feedback can be controlled independently in Settings.
Frequently Asked Questions
Does Quiet Nine require an internet connection?
No. Core puzzle generation, gameplay and statistics are designed to work offline.
Are the puzzles pre-recorded?
No. Quiet Nine includes a real puzzle generator and verifies that every generated puzzle has a unique solution.
Does the app contain ads or subscriptions?
No. Quiet Nine is a paid premium app with no advertising and no subscription.
How do I change language?
Open Settings and choose English, Portuguese (Portugal), French or Spanish.
Will I lose my puzzle if I close the app?
No. Your current game is saved automatically and can be continued from the home screen.