Math Apps for iPad & iPhone by Esa Helttula
All iDevBooks math apps are easy to use and have intuitive interfaces that are hand crafted for iPad and iPhone. The apps are used by schools, parents, and students worldwide. They are also very popular in special education.
Endorsed by teachers
IEAR.ORG: "This app is fantastic!! It takes the students through the steps of a long division problem and shows them how each step of the problem is related to multiplication."
Endorsed by press
EDUDEMIC included the iDevBooks series of math apps in their list of the 20 best education apps and web tools of the year 2012: "These apps get three thumbs up from Edudemic because they’re so easy to use, and focused on making the concepts easy to learn rather than being bogged down with bells, whistles, and ads."
WIRED.COM: "Depending on your needs, you may not need all of these apps, but each one serves to teach and allow practice in a targeted area. The more ways you play with numbers and manipulate the methods to get to the correct answer, the more you understand how it all works. For anyone having trouble with arithmetic, these apps are an excellent choice for practicing and learning new methods."