An app for drawing and filling in selected puzzle grids on your phone/tablet, to avoiding having to write on public papers, or for if you only briefly have access to the puzzle.
Supports Crossword, Sudoku, and Battleship grids.
For Crossword grids:
* Draw a grid with any rectangular dimensions;
* Use common symmetries to quickly draw the grid;
* Load clues into the app as an image;
* Highlight clues in the image so that they can be visible alongside the grid;
For Sudoku grids:
* Undo actions;
* Ghost mode allows you to test solutions without overwriting the cells you are confident in;
* Automatically check for repeated numbers;
For Battleship grids:
* Draw a grid with any rectangular dimensions;
* Undo actions;
* Ghost mode allows you to test solutions without overwriting the cells you are confident in;
* The app keeps track of how many boats of each length you have and how many segments in each line;
For all grids:
* Save and load partially filled grids to return to later;
* The option to autosave allows the grid to be stored for when you next open the app;
| Version | v2.1 |
|---|---|
| Size | 17.96 MB |
| Developer | Iain Findlay |
| Category | Writing |
| Package | nds.fyll.puzzle_grid |
| Android | 4.1+ |
| Last Updated | Sep 14, 2026 |
| Downloads | 0 |