A free app for Android, by Twin Wizards: The Logic Puzzle Experts.

This is the perfect app for those times when you have a few minutes to spare but want to keep your mind sharp.

The game is a logic puzzle. Each level is a grid with several cells. You need to fill each cell with a number to complete the level.

Each puzzle has a number of clues. Use them to find the answer.

Each puzzle contains several hints. If you use them correctly, you can find the answer easily.

The puzzles are very easy to solve. You just need to fill in the numbers in the grid.

The game contains many achievements. Try to get them all.