Sharalike. Sharalike is available to use in the web browser on your laptop and is also available as an iOS app and as an Android app.
Sharalike is a service that will let you select a set of pictures on your phone or computer then add background music. Once you've selected pictures and selected music Sharalike does the rest of the work for you. Sharalike handles all of the work of adding transitions, pan and zoom effects, and lighting adjustments. You can choose from several slideshow themes. Each theme uses slightly different transitions and frames around your images. Sharalike does include a small selection of free instrumental music that you can use in your slideshow or you can import music from outside of the service.
Watch my video to learn how easy it is to create a video with Sharalike.