Sudoku Custom is a free iPhone application designed for Sudoku enthusiasts of all levels. It features over 30 solving techniques, ranging from basic strategies like Single Candidate to advanced methods such as X-Wing and Swordfish. Each technique comes with step-by-step explanations, visual demonstrations, and interactive examples, making it an ideal learning tool for beginners and advanced players alike. Users can import Sudoku puzzles from various sources and receive detailed hints, ensuring a comprehensive understanding of the game.

The application offers thousands of puzzles across seven difficulty levels, from easy to ultimate, along with daily challenges generated by a high-quality algorithm. Users can track their progress through global leaderboards and detailed statistics on their problem-solving performance. With no ads to disrupt the learning experience, Sudoku Custom is perfect for anyone looking to master this classic puzzle game.