Paper, Pen, Sudoku!

About

Paper, Pen, Sudoku! is a distraction-free Sudoku app designed to feel like solving a puzzle on paper. No timers forcing you, no cluttered interface — just you and the puzzle.

Available on iPhone with three difficulty levels: Easy, Medium, and Hard.

How to Play

Tap an empty cell to select it.
Use the number pad at the bottom to fill in your answer.
Every row, column, and 3×3 box must contain the numbers 1–9 without repetition.
Tap "Check" to verify your solution at any time.
Start a new game anytime from the Settings screen.

FAQ

Do I need an account to play?

No. The app requires no registration or login.

Does the app require an internet connection?

Puzzles are loaded from our server, so an internet connection is needed to start a new game. Once a puzzle is loaded, you can play offline.

How do I change the difficulty?

Open Settings (gear icon, top right) and select Easy, Medium, or Hard. Then tap "Start New Game".

How do I switch between light and dark mode?

Open Settings and choose your preferred appearance under the Appearance section.

My progress was lost. What happened?

Progress is saved locally on your device. Deleting and reinstalling the app will reset your current game.

Contact

Have a question or found a bug? We'd love to hear from you.

mertgurcan@alumni.bilkent.edu.tr