Calculator X 4 app for iPhone and iPad

*****************************************
This is a new calculator app for iPad, in a special style.
On the home screen, there are four mini calculator, every one can work independently.
In some salutations, you may want make calculation for different kind of numbers and you may also want view all results directly, this app is developed for this propose. As there are four separated calculators, you can do your calculation freely.
This is very useful and convenience.

Besides, you can change the background images to the one you like.

Features:
* Four mini calculators on one screen
* Separated calculators and Separated task response
* Drag-able
* Change-able background image
* Build in 21 greatest wallpapers