Stillgrid

Category

Other

Launched

July 20, 2026

Website

stillgrid.app

Stillgrid is a modern, minimalist sudoku platform that offers a calm, distraction free puzzle experience. It supports multiple grid sizes (6×6, 9×9, 16×16) and several variants: Classic, X Sudoku, Jigsaw, and Killer sudoku. Difficulty levels range from Easy to Medium to Nightmare, and puzzles are technique graded to match all skill levels. The app includes a timer, mistake counter, notes mode for pencil marks, undo/redo, and auto fill. It generates puzzles on the fly (e.g., "generated in 110 ms") and provides a solution view. Stillgrid is free, open source (MIT), and has no ads.