Sudoku - Classic Sudoku Puzzle

Guru Puzzle Game offers Sudoku - Classic Sudoku Puzzle for anyone who likes filling a nine-by-nine grid. It is a straightforward number puzzle app with thousands of grids and a daily challenge, pitched at both newcomers and experienced solvers.

Puzzles come in four difficulty levels: Easy, Medium, Difficult and Expert. While solving, players can switch on a notes mode to pencil in candidate numbers, and those notes update automatically as cells are filled. Mistakes can be caught with an automatic checker in real time or left for the player to find, and there are undo and free hint buttons for moments of being stuck. A number-first input option lets a digit be locked with a long press and placed in several cells in a row. Daily challenges award special trophies, and a dark theme is available for late-night play.

It is extremely well received: 4.7 from over 600,000 ratings, with 88% five-star and 4% one-star, and 10,000,000+ installs. The game is free, ad supported, and offers in-app purchases from €1.19 to €104.99 when billed through Google Play. It was updated on 2026-09-04, runs on Android 6.0 or newer, and is rated USK: All ages. We list 23 versions; the latest, 5.7.0, is a surprisingly large 172.2 MB for a Sudoku game.

Sudoku players of any level who want a feature-rich, well-reviewed app will find it covers the essentials. Those short on storage, or who dislike ads, may want a lighter alternative.