One of the things I love about Magisto is about how simple and easy to use it is. After you install it, on the start menu you will be offered to create your movie. It can be from the existing videos on your phone, you can make a video directly from the app or you can import videos from Google Drive.
After you choose a video, you'll need to select theme for your movie. There are wide variety of themes, from Indie and Summer, to Love and Sentimental. After you choose the theme, then you can choose background song. It can be song from the list they offer, or you can import song from your phone. After that you'll need to wait your video to be finished. I have one complaint here, the creating was little slow. But I own a mide-range device, on the newest smartphones it maybe little faster.
However, you will be definitely satisfied by the interesting movies this app creates. Also, you can share the videos on the social networks. Have fun and try the app, it is free and available on Google Play.
Google Play Download Link: MAGISTO