Item: Zendoku
Rating: 85
Author: Dinsun

Our Expert Score

85/100

Zendoku is exactly what I want from a mobile puzzle game: clean, fast, and entirely focused on the logic. There are no flashing lights or predatory microtransactions here, just a massive library of Sudoku puzzles wrapped in a very elegant interface. The 'Unfair' difficulty is genuinely punishing for veterans, while the easier modes are perfect for a morning coffee break.

I particularly love the theme system. Being able to switch between a dark mode, a high-contrast theme, or something more colorful keeps the visual experience fresh. The note-taking system is intuitive, and the lack of a forced timer option makes it a great choice for those who just want to relax and think. It’s the definitive Sudoku app for people who hate 'cluttered' apps.

Dinsun reviewed on: Fri Feb 27 2026

The Game

Available on: Mac, iPhone, iPad

934571977

$0.99 4+★4 2 reviews

Author : Harmonic Projects LLC

Pubish Date : Fri Jan 30 2015

Last Update Date : Thu Jan 16 2025

Support Languages : English

Genres :

Version 4.0.3Thu Jan 16 2025

Minor bug fixes.
Simple, clean, elegant sudoku game with unlimited puzzles and a focus on fewer distractions and ease of use.
- Play puzzles from four difficulty settings from "Easy" to "Unfair"
- Choose from 15 beautiful and relaxing built-in themes
- Write notes by simply tapping and holding on a number while a cell is selected
- Turn off the timer for relaxed and distraction-free puzzle solving
Requires iOS 16.1 or later. Compatible with iPhone, iPad, and iPod touch.
Simple, clean, elegant sudoku game with unlimited puzzles and a focus on fewer distractions and ease of use.
Fully functional without any subscriptions or in-app purchases!
- Play puzzles from four difficulty settings from "Easy" to "Unfair"
- Choose from 15 beautiful and relaxing built-in themes
- Write notes by simply tapping and holding on a number while a cell is selected
- Turn off the timer and status bar for relaxed and distraction-free puzzle solving

Ratings & Reviews

4 out of 5 with 2 Counts

★★★★★

Age Rating 4+

Zendoku provides a refined Sudoku experience designed for both casual players and puzzle masters. With a focus on ease of use and minimalist design, the app offers unlimited puzzles generated on the fly. Players can customize their experience with over 15 themes and enjoy a distraction-free environment that respects their privacy and focus.

Features

Unlimited, procedurally generated Sudoku puzzles

Four difficulty settings: Easy, Moderate, Hard, and Unfair

15+ beautiful themes for a personalized look

Fully functional offline with no ads or in-app purchases

Intuitive note-taking and auto-save functionality

Tips

Using the Note System

To keep track of possibilities, simply tap and hold a number while a cell is selected to enter a note. This allows you to visualize potential solutions without committing to a final digit.

Gameplays

Finding the Right Difficulty

Start with 'Easy' to learn the interface, then work your way up through 'Moderate' and 'Hard'. For a true challenge, 'Unfair' puzzles require advanced techniques like X-Wings and Swordfish.