Piano Companion is an app that helps you practice the piano and learn music theory. Helps users find chords or scales by name, provides a large number of piano chords and scales. And when you use it to play the piano, the finish and tone are almost the same as those of a real piano.
VivaCut Pro is a powerful video editing application with many features designed to help you create and edit unique, movie-like videos. Its Green Screen/Chroma key feature allows you to color your video and change the background color of the frame, as well as add music, text, emoticons and more to your video.