iMovie is a video editing application created by Apple that allows a user to record, create, and edit their own movie footage. This application is made for Mac OS devices and is available for free in the Apple App Store (using OS 10.9 Mavericks or higher). A limited feature version is also available for iOS mobile devices.
While not as feature rich or powerful as Finalcut Pro or Adobe Premier, iMovie can handle most amateur video editing needs. It includes a multitrack timeline and the ability to layer audio and video samples, add effects between them, enhance or adjust the quality of audio and video samples, add title slides and text, and even a basic green screen feature. Stock themes are included to quickly dress up your movie based on a particular purpose, though most of these are geared toward home use.