Mobile apps is a software application developed specifically for use on small, wireless computing devices, such as smartphones and tablets, rather than desktop or laptop computers.It have become a major part of our lives. They touch on everything from our schedules and calendars, to communication with others and our own health or finances. Today, there are around 3.5 billion smartphone users in the world. That’s a staggering half of the total population of the planet! so Mobile App design is critical in today’s app-driven world