Bring some artwork design to your applications with this UI released by GraphicsBay.com designers. It's a simple but great app with artistic fonts, flat design and abstract elements. It's a combination between sketch and abstract lines and shapes. The PSD file is fully layered, 8 screens, retina optimized and easy to work with.
Download: PSD: http://graphicsbay.com/item/iphone-ui-sketch-it-up/185
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