I thought I knew how to play Sudoku until I downloaded Good Sudoku+. Most apps just give you a grid and tell you to figure it out. This app actually sits down next to you and explains the 'why' behind every move. It has completely changed my relationship with the game. I went from struggling with 'Medium' puzzles to confidently tackling 'Expert' ones because I finally understand the patterns.
The design is typical Zach Gage—clean, intentional, and slightly playful. The 'Focus' mode, where it highlights all instances of a specific number and dims the rest of the board, is a literal game-changer for my eyes. It’s the most thoughtful digital version of a classic puzzle I’ve ever seen.
I’ve played Sudoku for twenty years, mostly in newspapers or cheap apps. Most digital versions are garbage—they focus on flashy effects rather than the UI. Gage gets it. He understood that the worst part of Sudoku is the manual labor of pencil marks. Good Sudoku automates the drudgery without solving the puzzle for you. It’s an expert's tool.
What really impresses me—and I don't say this often—is the tutorial system. It taught me techniques I’d been using instinctively but couldn't name. It treats the player with respect. If you’re conservative like me and hate 'gamified' puzzles with lives and gems, this is the antidote. It’s just the game, perfected. It’s nearly a 90, but let's be honest: it’s still Sudoku. It won't change your life, but it will change how you spend your Sunday mornings.
Performance: Instant loading, zero crashes. UI is highly responsive.
Buy if: You want to actually get better at Sudoku rather than just passing the time.
Skip if: You find Sudoku fundamentally boring; this won't change your mind.
Good Sudoku+ is designed by Zach Gage and Jack Mapel with one goal: to make you love Sudoku. It’s not just a collection of puzzles; it’s a learning tool. The game features a 'Good AI' that can detect when you're stuck and teach you the exact technique needed to progress, from simple 'Naked Singles' to complex 'X-Wings.' With an elegant interface, smart note-taking, and puzzles that are hand-generated for maximum logic, Good Sudoku+ is the last Sudoku app you’ll ever need to download.
Built-in Sudoku coaching system
70,000+ puzzles across 5 difficulties
Innovative 'Focus' mode for specific numbers
Custom puzzle importer
No ads or in-game purchases
The game automates the tedious parts of Sudoku. You can use 'Auto-Candidates' to fill in all possible numbers, allowing you to focus on the high-level logic rather than bookkeeping. The interface is optimized for speed and clarity.
It's an engine that analyzes your board in real-time to offer hints based on logical techniques rather than just filling in a square.