Math to the Rescue Lite

 

 https://itunes.apple.com/us/app/math-to-the-rescue-lite/id562354293?mt=8

Cost: Free

Pros: It allows for students to do both addition and subtraction.  While using this app it also allows for students to see how numbers look on a number line. Will attract the attention of students because it takes place in the ocean as a rescue team saving crew members of a boat that is on fire and sinking.

Cons: There is only one level to play so it can be a little repetitious for students

Application: This would be used as a compliment to a lesson.  Students could work on their basic math skills once they are finished with their assignment or during free time.