A software application developed for use on Apple’s iOS-powered iPhone devices. iPhone apps are available through the Apple App Store and are designed to run on Apple’s iOS mobile operating system, which powers the iPhone as well as Apple’s iPad and iPod Touch devices.

The word “app” is an abbreviation for application. An app is a piece of software. It can run on the internet, on your computer, or on your phone or any other electronic device. The word “app” is a more modern usage, but this is really the same thing as a software program.

This is probably the most common way to discuss apps. The Google Play store, for example (which sells movies, e-books, and music in addition to software), has a section on apps and “My apps.” Amazon has a section called Appstore for Android. Apple has an App Store for iOS devices. However, these are all just mobile apps.

Google Drive, for example, is an online app that you can use from any computer without downloading anything. However, if you have a desktop computer, you can download the Google Drive app and make it easier to sync your computer desktop files with your online files. Drag a file into your the Google Drive folder residing on your computer desktop, and it will upload to Google Drive’s virtual storage in the background.

Apps are also known as: applications, software, programs, executables, subroutines, and packages.