A mobile app is a software application developed specifically for use on small, wireless computing devices, such as smartphones and tablets, rather than desktop or laptop computers. 

 Media Mirror Mobile apps are designed with consideration for the demands and constraints of the devices and also to take advantage of any specialized capabilities they have.

Mobile apps are sometimes categorized according to whether they are web-based or native apps, which are created specifically for a given platform.

–Web App:

Web application (Web app) is an application program that is stored on a remote server and delivered over the Internet through a browser interface. Web services are Web apps by definition and many, although not all, websites contain Web apps.

Web applications are accessed by the user through a web browser with an active network connection. Web applications include webmail, word processors and spreadsheets. … Web applications allow team members to work together on the same document include Google Docs, Google Slides, Google Sheets and cloud storage. Online sharing of calendars is also a web application.