A mobile application or app is a computer program or software application designed to run on a mobile device such as a phone, tablet, or watch. Mobile applications often stand in contrast to desktop applications which are designed to run on desktop computers, and web applications which run in mobile web browsers rather than directly on the mobile device. Impact on Business Mobile apps impact has revolutionized the way we work, play, communicate and shop. With the help of social networking sites, we get to know everything about a person who is very far from us. Video calling reduced the distance. Shopping apps have saved a lot of time that was earlier spent in malls and markets. Benefits of Mobile Apps for Business .Direct Communication and Engagement with Clients and Customers. Improve Customer Engagement. Increase Brand Awareness. Create a Useful Marketing Channel. Create an Effective Loyalty program. Get Ahead of Your Competition. To Create a Barrier to Entry. Offers Unique Services.