In the last few years, commonly named smartphones have become the most used personal devices. iPhone is one of the most used smartphones all over the world, and iPads have replaced personal computers in many cases.
iPhone, iPad, and iPod touch run the same operating system, which is called iOS. They have a neat and homogeneous user interface, which allows its users to interact with the device through simple gestures (such as tapping and double-tapping the screen) or complex gestures (such as swiping or pinching the screen).
Applications that run on both iPhone and iPad can be easily written with minor changes, and the platforms are so powerful that almost any application can run on them.
We can directly go ...