Chameleon is a modern mobile UI kit for Sketch and Photoshop. With 100 beautiful screens in 7 categories, 15 unique themes, icons and hundreds of neatly organized components you can easily create design for your mobile app.
R: Great transparent boxes and font, interesting transparent background. Pro: icons, in particular text boxes. Gradient also works very well to create order/flow. Free cross-platform UI kit for Photoshop and Sketch