NineGaps by Quadion Technologies is a challenging number game. Your job is to fit the nine numbers from 1 to 9 in the squares so that the mathematical operations from left to right and top to bottom have the correct end result in each row and column. There are three levels of game play; easy, medium, and hard. The only difference between the three levels is how much information you are given at the beginning of the level. On an easy level, you start with two of the numbers already on the board. These numbers are very helpful in figuring out the placement of the others. Medium levels only give you one number to start with, and hard levels leave you completely on your own. To fill in the spaces on the board, simply grab the numbers at the top of the screen and drag them into place on the board.
When you place numbers in a row or column that reach the correct answer in the end, the number at the end of the row or column will turn green. Be careful not to interpret this change of color to mean that the numbers are correct. You may still have a number incorrectly placed. It only means that the numbers reach the correct answer. There is also a timer running to put the pressure on to complete the level as fast as you can. The app keeps track of the fastest time for each difficulty level. NineGaps is fun and challenging for those who like number puzzles.
NineGaps is $0.99 in the iTunes App Store.
Developer’s Website: http://www.ninegapsapp.com/