We have used many worksheets developed by Visual Learning For Life and when I knew they had made an app, I was interested. The free version of this app has access to level 1 with 150 puzzles. The full version has 4 levels in all and 150 puzzles in each level.
This is a level 1 puzzle and your kiddo has to find the exact match of the letters in the given pattern from the options. This develops visual tracking skills, visual discrimination skills and spatial relationship skills.
It becomes more complicated as levels progress with more letters and more rows and columns.
A friendly monster animation encourages your child each time he/she chooses the right answer. All in all a good app and the price is good at $3.99. It’s available on both itunes ( Here) and Google play ( Here).